JP2000095195A - Device to prevent bird strike for airplane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent bird strike by installing a preventive device between a fan and a spinner, in front of inlet guide vanes, and intake ducts and the like. SOLUTION: A hot air screen 38 is installed to cover an intake duct 9 so that colliding objects slide lightly backward over the outer surface of the hot air screen 38. This ensures safety since no colliding objects enter the intake duct 9 and the hot air screen 38 is not damaged or deformed since no impact load is applied thereto. Installation of the hot air screen 38 to the forward tilting intake duct 9 permits more efficient air intake. In addition, the hot air screen 38 and intake ducts 40 are heated by hot air though located outside, ensuring a safe flight with no icing even in a flight at a low temperature. More than ever, as shown in this drawing, by installing the hot air screen 38 with a larger diameter having more intake ducts 40 at the front face of an outer peripheral of a hot air ring 47 with a cone shaped inner periphery, a large amount of air is guided to the direction of fans. Therefore, the present invention can be preferably implemented when a decrease in the air inflow rate is concerned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bird strike prevention device for an aircraft, which prevents a bird strike from entering an intake port of an engine, protects a jet engine, and enables safe flight.

[0002]

2. Description of the Related Art Conventionally, a bird strike often occurs during takeoff, landing, and low altitude flight of an aircraft equipped with a jet engine, and the collision pressure causes the fan of the jet engine or the inside of the jet engine. Related equipment has been destroyed or damaged, which has caused serious accidents such as inability to take off, emergency landing, and crashes, and many precious lives have been lost or injured. Also, replacing or repairing damaged or damaged parts will seriously affect the overall flight plan,
Material damage is an enormous loss in economic terms. In addition, these pressure the accounting of the aircraft operating company,
With weighted insurance and accident prevention measures, the airfare has been spilled over, increasing the burden on passengers. This bird
As a measure to prevent strikes, security guards stationed at the airport are chasing birds with guns, explosive sounds or natural enemy birds, but there are always dangers at that time and because they return. Also, the danger is increasing as flight speeds tend to be higher. This is a global trend, for aircraft designed and built by stakeholders with wisdom,
It is the only serious weakness that requires safety measures as soon as possible. As a solution to this problem, Japanese Patent Application No. Sho 60 (1)
No. 985) -120292 and an airplane jet engine inlet cover and Japanese Patent Application No. 10 (1998) -1296.
No. 37 has filed an application for a protective cover for an airplane jet engine.
Do strike is effectively prevented.

[0003]

The intake port of the jet engine is left unprotected and no safety measures are taken against bird strikes.

[0004]

A fan 2 and a spinner 13 are provided.
A protection device is provided between the entrance guide wing 29 and the intake port 9 to prevent a bird strike.
In addition, the structure that can be easily implemented on the aircraft in service,
It has also realized that a bird strike can be prevented immediately.

[0005]

1 to 3 show a spinner mounting cylinder 4 of a single flange 3 formed on the front surface of a fan 2 of a jet engine 1 (hereinafter abbreviated to engine 1). An inner cylinder 5 fixed with a key 6 is formed on the outer periphery of the inner cylinder 5.
, A protective net mounting hole 8 is formed at the same pitch on the same circumference in the axial direction, and an outer cylinder 10 slightly smaller than the inner diameter of the intake port 9 is formed. And the front end is sharpened or formed in an R shape.
A step circumference 11 having a diameter slightly smaller than 0 is formed, and the same number of protection net mounting holes 8 as the inner cylinder 5 are formed at both sides of the entire circumference of the step circumference 11 at the same pitch. A protective net 12 that can be attached concentrically is formed in a V-shape with a spring wire, and the protective net 12 is passed radially from the outer peripheral side of the protective net mounting hole 8 of the outer cylinder 10, and the other ends are placed inside. It is bent and fitted into the protective net mounting hole 8 of the inner cylinder 5. Thus, the one flange 3 of the spinner mounting cylinder 4 is fixed to the front of the fan 2 with bolts 15, the inner cylinder 5 is fixed to the spinner mounting cylinder 4 with a key 6, and the spinner is fixed to the front of the inner cylinder 5. 13 is attached to the spinner mounting cylinder 4 with bolts 15 so that the protection net 12 rotates at the same speed as the fan 2. In addition, one flange 3 and bolt hole 14 of spinner 13
When the bolt 15 is installed, it is recessed from the surface so that it does not interfere with the installation of the next part or does not receive the resistance of air. Bolt 1
5 is better to use a hexagon socket head bolt.

FIGS. 4 and 5 of the second embodiment show that the outer cylinder 10 is formed narrower than the inner cylinder 5, and the protective cylinder mounting holes 8 are formed in the outer cylinder 10 at the same pitch in the axial direction of the outer cylinder 10. Set the inner cylinder 5
On both sides, the same number of protection net mounting holes 8 as the number of protection net mounting holes 8 of the outer cylinder 10 are drilled in two steps at the same pitch in a zigzag pattern, and adapted to the first and second levels of protection net mounting holes 8. Two types of protection nets 12 are formed, and the protection nets 12 are passed through the protection net mounting holes 8 of the outer cylinder 10 in the radial direction, and the other ends are alternately stepped from both sides into the protection net mounting holes 8 of the inner cylinder 5. Attached.

FIG. 6 to FIG. 8 of Embodiment 3 show that a protective net mounting hole 8 is formed obliquely at the same pitch on the outer periphery of the outer cylinder 10, and the protective net of the outer cylinder 10 is provided on both sides of the inner cylinder 5. The same number of protection net mounting holes 8 as the mounting holes 8 are alternately drilled at the same pitch, the protection net 12 is passed through the protection net mounting hole 8 of the outer cylinder 10 in the radial direction, and the other end is protected on both sides of the inner cylinder 5. It is radially mounted in the net mounting hole 8.

FIG. 9 to FIG. 11 of Embodiment 4 show that a concave circumference 16 is formed on the outer periphery of the rear half of the outer cylinder 10 and the protective net mounting holes 8 are formed in the concave circumference 16 in a staggered manner at the same pitch. On both sides of the inner cylinder 5, the same number of protection net mounting holes 8 of the outer cylinder 10 as the number of the protection net mounting holes 8 are alternately formed, and the protection net 12 passes through the protection net mounting holes 8 of the outer cylinder 10 in the radial direction. The other end is radially attached to the protective net attachment holes 8 on both sides of the inner cylinder 5.

FIGS. 12 to 14 of the fifth embodiment show the outer cylinder 10.
Protective net mounting grooves 17 are formed at the same pitch, and the same number of protective net mounting holes 8 as the number of protective net mounting grooves 17 of the outer cylinder 10 are formed on both sides of the inner cylinder 5 in a staggered manner.
Two types of protection nets 12 are formed to fit into the first and second protection net mounting holes 8, and the protection nets 12 are
0 in the protection net mounting groove 17 from the radial direction,
The other end is attached to the protection net attachment hole 8 of the inner cylinder 5 from both sides in a stepwise manner. In this embodiment, the protection net mounting groove 17 is formed in the axial direction.
As shown in FIGS. 6 to 8, it may be formed in an oblique shape and attached.

FIG. 15 to FIG. 18 of Embodiment 6 show that a concave groove 18 is formed in the entire circumference near both sides of the inner cylinder 5 and bolt holes 19 are formed at the same pitch on the same circumference on both end faces. The screw holes 20 are formed in a staggered manner, and the screw holes 20 are formed on the inner side of the concave grooves 18. The entrances of the bolt holes 19 are bored, and the outer cylinder 10 is formed in a streamlined shape. The same number of bag bolt through holes 21 as 19 are formed in a staggered and concave shape at the same pitch.
Further, a small wheel 22 is formed at one end of the protective net 12 and slightly bent, and a male screw 23 is formed at the other end. The small wheel 22 of the protective net 12 is inserted into the concave groove 18 so that the radius of the protective net 12 is reduced. A bolt is formed by attaching the bolt with a bolt 15 in the direction, and a bag bolt 24 is formed through the bag bolt through-hole 21. A female screw is formed in the middle of the tip of the bag bolt 24, and the outer periphery of the tip is formed in a square shape. The protection net 12 is fixed by passing a bolt 24 through the cap bolt through hole 21 and screwing into the external thread 23 of the protection net 12. The bolt 15 is preferably a hexagon socket head bolt, and if the cap bolt 24 is also provided with a hexagon socket socket, it is easy to attach. Further, although the outer cylinder 10 is formed in a streamline shape, the outer end may be formed in a parallel shape. Although the protection net 12 is attached in a staggered manner on the front side and the rear side, it may be attached on the front and back, and the number of the protection nets 12 may be doubled. The cap bolt 24 does not loosen due to the tension of the protective net 12 and the friction between the bottom of the cap bolt through hole 21 and the cap bolt 24. May be pressed against the screw 23 by pressing from both sides. The above is the same in Embodiment 7 (FIGS. 19 to 22) described later. In this embodiment, the protective net 12 is attached to both end faces of the inner cylinder 5 in a staggered manner, but the concave groove 18 is provided in the middle of the inner cylinder 5, and the cap bolt hole 21 is provided in the middle of the outer cylinder 10. If the number of the protection nets 12 is increased or provided, three or more protection nets 12 can be attached, and the protection effect against a collision object can be further increased.

FIG. 19 to FIG. 22 of the seventh embodiment show that female threads 25 are screwed around the outer circumference near both ends of the inner cylinder 5 in a staggered manner at the same pitch in radially opposite diagonal directions. On the outer periphery of 10, the same number of bag bolt through holes 21 as female screws 25 are formed in a staggered manner at the same pitch. Also, screws 23 are formed at both ends of the protective net 12, and a cap bolt 24 is screwed into the other end to pass through the cap bolt through hole 21 in the radial direction, and the external thread 23 is screwed into the female screw 25 of the inner cylinder 5. The protective net 12 is fixed by screwing. The screwing into the inner cylinder 5 is performed by turning the cap bolt 24 and screwing it.
Hold the root of 2 with a tool and screw it in.
Should be re-tightened. In addition, a female screw 2 is provided at an intermediate portion of the inner cylinder 5.
If the number of holes 5 is increased or provided in the middle portion of the outer cylinder 10, the protective nets 12 can be attached in three or more rows.

In FIGS. 23 to 30 of the eighth embodiment, FIG.
3, the inner cylinder 5 is formed in a symmetrical step shape, and hubs 43 having the same outer diameter are attached to the step from row A to row D at the same interval.
As shown in FIGS. 24 and 25, a round hole through which the round head 44 of the protective net 12 passes in the radial direction of each hub 43 is provided. 8 for A
When the hub 43 is viewed from the spinner 13 side, the protective net mounting holes 8 in the rows A and D are shifted by half a pitch from the same line of sight when the hubs 43 are viewed from the spinner 13 side. Attach hub 43 and install protection net mounting holes 8 in rows B and C
Are attached so that they are in the same line of sight.
Four rows of blind bolt through holes 21 having a spherical bottom surface are formed in the radial direction of each protective net mounting hole 8. Further, one end of the protection net 12 is bent into an L shape, a round head 44 is formed at the tip, and a male screw 23 is formed at the other end. The protection nets 12 in the A row and the D row have the same length. Rows B and C are formed longer than rows A and D. In addition, a recess 45 is formed on the upper surface of the other end of the protection net 12. Thus, the round head 44 of the protection net 12 is passed through the protection net mounting hole 8, and the other end is fixed with the cap bolt 24. It should be noted that the cap bolt 24 is formed by pulling a female screw up to the upper surface and forming a slotted 46 on the upper surface.
Is formed. The loosening of the cap bolt 24 may be carried out as in Embodiment 6 (FIGS. 15 to 18). In this embodiment, however, a punch 45 is further provided in the recess 45 at the other end of the protective net 12. May be applied to inflate the bag bolt 24 so as not to be loosened. FIG. 26 shows row A (front row), FIG.
Reference numeral 9 denotes a mounting example of the protection nets 12 in the D row (last row), which are radially mounted in the radial direction. B in FIGS. 27 and 28
Rows C and C (intermediate row) are examples of mounting the protection net 12 for steadying the rotation or stopping during start / acceleration, etc., and are shifted to the right or left from the radial direction of the protection net 12, and rows B and C When the rows are viewed from the spinner 13 side (FIG. 30), they are attached so as to form an isosceles triangle. Note that rows A and D, B
Rows C and C are mounted in an isosceles triangle shape when viewed from the front (FIG. 23), but can be inclined forward (spinner 13 side) or rearward (fan 2 side), or rows A and D can be intermediate rows, The rows B and C may be set and mounted so that they are on the outside. If the hub 43 and the through-bolt hole 21 are additionally provided, the protection net 1
2 can be attached more, so that the protection effect against a collision object can be further enhanced.

In FIG. 31 of the ninth embodiment, the protection net 12 is formed in an inverted conical shape facing the rear.

In FIG. 32 of the tenth embodiment, the protection net 12 is formed in a slightly shallow inverted conical shape.

FIG. 33 of the eleventh embodiment shows that the protective net 12 is formed in a slightly forward-facing conical shape. Note that the outer cylinder 10 is formed to have a wide width so that the first half thereof projects forward of the protection net 12.

FIGS. 34 to 37 of the twelfth embodiment show examples of attaching the protective net 12, in which the protective net attachment holes 8 of the inner cylinder 5 are formed in three steps.
When the second stage is middle and the third stage is outside, the protection net mounting holes 8 of the first and second stages are staggered at the same pitch. The third stage is the protection of the first and second stages. Each is penetrated and drilled at a position sandwiched between the nets 12. Outer cylinder 10 has inner cylinder 5
And the same number of protection net mounting holes 8 are formed at the same pitch. Also, the first and second protection nets 12 are inclined forward and bent up and down rearward, and the second protection net 12 is formed shorter than the first protection net by the height difference. The protection net 12 at the third level is also inclined forward, but is bent up and down, so that the third level is shorter than the second level by the height of the step. Thus, as shown in FIG.
Through the protection net mounting hole 8 of the first stage of the inner cylinder 5 and the protection net mounting hole 8 on the outer cylinder 10 side in the radial direction from the front, and the rear end is bent. The second-stage protection net 12 also passes through the second-stage of the inner cylinder 5 and the outer cylinder 10 from the front through the protection-net mounting hole 8 between the first-stage protection nets 12 attached, and the rear end is bent. ing. Third-stage protection net 12
36, as shown in FIG. 36, the front end is bent through the third stage of the inner cylinder 5 and the protection net mounting hole 8 on the outer cylinder 10 side in the radial direction from the rear. Note that this embodiment can be applied to other embodiments, and the other embodiments also have the inner cylinder 5 as in this embodiment.
The protective net mounting holes 8 are formed in several stages, and the outer cylinder 10 is also formed with the same number of protective net mounting holes 8.
If the protection net mounting groove 17 (FIGS. 12 to 14) is formed, a larger number of the protection nets 12 shown in the embodiments can be mounted and the mesh size can be reduced, so that the bird strike can be effectively prevented. You can do it.

FIGS. 38 to 41 of the thirteenth embodiment show a protection net 12 similar to that of the twelfth embodiment (FIGS. 34 to 37).
In the mounting example, the protective net mounting holes 8 of the inner cylinder 5 are formed in a staggered pattern at the same pitch, and the outer cylinder 10 has the same number of protective net mounting holes 8 as the inner cylinder 5 formed at the same pitch. .
Also, the first-stage protection net 12 is tilted forward, and the upper and lower sides are bent backward. The second-stage protection net 12 is also tilted forward, but the upper and lower sides are bent forward and both ends are inverted outward. The second step is formed shorter than the first step by the amount of the step. 39, the first-stage protection net 12 is passed from the front through the first-stage protection net mounting hole 8 of the inner cylinder 5 and the protection net mounting hole 8 on the outer cylinder 10 side in the radial direction, respectively. Bending the rear end, the second-stage protection net 12
As shown in FIG. 40, the second stage of the inner cylinder 5 and the outer cylinder 10 are respectively passed from the front through the protection net mounting holes 8 between the protection nets 12 of the first stage previously mounted, and the rear ends are bent. I have.
In the present embodiment, the protection net mounting hole 8 of the inner cylinder 5 is
However, as in the twelfth embodiment (FIGS. 34 to 37), three or more steps may be provided, and more protective nets 12 may be attached.

FIG. 42 of the fourteenth embodiment shows that the outer cylinder 10 can be smoothly rotated and stopped without rotating or stopping at the time of rotation or stop such as starting and acceleration. Protective net mounting holes 8 are drilled at the same pitch in the equally divided area, and holes are drilled at intervals of 2 pitches outside the above range, and the part is also drilled on the first-stage radiation. The same number of protection net attachment holes 8 are drilled in the radial direction of the second protection net attachment hole 8 of the inner cylinder 5, and on the vertical bisector of the first protection net attachment hole 8 of the inner cylinder 5. Protective net mounting holes 8 are formed vertically. Thus, the protection net 12 is attached to the second protection net mounting hole 8 of the inner cylinder 5 and the radiation protection net mounting hole 8, and the long protection net mounting hole 8 of the inner cylinder 5 is provided with the long protection net mounting hole 8. Are formed and passed through, and the other end is respectively passed through two protection net mounting holes 8 of the outer cylinder 10 on a perpendicular bisector of both protection net mounting holes 8 to form an isosceles triangular shape. Attached to. This embodiment can be applied to other embodiments. It should be noted that a suitable anti-sway method or a spoke-type anti-sway method for a bicycle, a motorcycle or the like may be implemented. However, it is better to have a structure that reduces air resistance during rotation as much as possible.

FIGS. 43 to 45 of the fifteenth embodiment show that a concentric ventilation plate 26 is attached to the protective net 12, a pointed or R-shaped blade 27 is formed at the front end, and a rear end is formed in a streamlined shape. are doing. Although the protective net 12 is formed in a triangular shape when viewed from the front, the protective net 12 may have a conical or inverted conical shape as in other embodiments, and a ventilation plate 26 corresponding thereto may be attached. The ventilation plate 26 is preferably formed of a spring material, and the rear end of the ventilation plate 26 may be formed in a flat plate shape instead of a streamline shape. This embodiment can be applied to other embodiments.

In FIGS. 46 to 49 of the sixteenth embodiment, in FIG. 46, a concentric ring 28 is attached to the front surface of the rear protective net 12. FIGS. 48 and 49 show examples of attachment to the protection net 12 formed in an inverted conical shape.
FIG. 8 shows a case in which the rings 28 are alternately sewn in a net shape and attached.
9 attaches the ring 28 to the front and rear protective nets 12. Further, a wire mesh may be attached to the rear protective net 12, or a coarse wire mesh may be attached to the front side and a fine wire mesh may be attached to the rear side. Also, the ring 28 may be coarse on the front side and fine on the rear side, and it is better that the ring 28 and the wire mesh are formed of a spring wire. This embodiment can be applied to other embodiments.

50 to 52 of the seventeenth embodiment, reference numeral 29 denotes an inlet guide vane designed to have an optimum inflow angle with respect to air flowing into the compressor. 29 is attached to the surrounding hot air ring 30, and the hot air that has entered the hot air ring 30 from the hot air tube 31 is blown into each of the inlet guide vanes 29, and the hot air heats the inlet guide vanes 29,
The nose dome 32 is discharged from the discharge port 33. In this embodiment, a concentric recess 34 is formed on the front surface of each of the inlet guide vanes 29, and concentric rings 28 made of a spring wire are attached to the recess 34 at the same pitch. Further, in this embodiment, the ring 28 is attached, but the ventilation plate 26 or a wire net may be attached.
Although the ring 28 is mounted concentrically, it may be formed in a polygonal shape along the entrance guide wing 29 as shown in FIG. 52. In order to reduce the impact pressure on the two ends, the width of the fan 2 may be gradually narrowed toward the hot air ring 30 side or the overall pitch may be further reduced to enhance the safety of the entire fan 2. The above is the same in other embodiments.

FIG. 53 and FIG. 54 of the eighteenth embodiment
A hot air ring 30 attachable to the hot air ring 30 and a conical intermediate ring 35 inside and outside the spinner 13 are formed. A plurality of hot air cylinders 36 having a streamlined or airfoil cross section between 35 and having a small depth direction and a narrow width so as to be able to cope with a change in the amount of air flowing into the compressor in a radial direction. The hot air cylinder 36 is formed longer in the direction of the fan 2 toward the intermediate ring 35 so that the cross-sectional performance is increased. Further, a concentric ventilation plate 26 is provided on the front surface of each hot air cylinder 36.
Are gradually narrowed toward the hot air ring 30 side. Then, the hot air ring 30 is inserted into the air inlet 9, and the hot air ring 30 is attached to the air inlet 9 with bolts 15 when the gap between the intermediate ring 35 and the spinner 13 is several millimeters. A hot air tube 31 is connected. Although a total of twelve hot air cylinders 36 are attached, the number of hot air cylinders 36 may be increased when the impact resistance against the collision pressure between the hot air cylinder 36 and the ventilation plate 26 is increased. By doing so, the gap between the hot air cylinders 36 becomes narrower, so that heat conduction to the ventilation plate 26 also increases. However, in order to reduce the resistance of the inflowing air, the cross section of the hot air cylinder 36 is formed to be one size smaller as a whole. This is effective in reducing the intake noise of the engine 1 and the weight of the engine 1. In place of the ventilation plate 26, a ring 28 or a wire net may be attached. Further, the ventilation plate 26 is gradually narrowed toward the hot air ring 30, but may be the same pitch or the whole pitch may be further reduced. Further, in order to increase the section modulus of the hot air cylinder 36, the hot air cylinder 36 is formed longer in the direction of the fan 2 toward the intermediate ring 35, but the same length (parallel)
May be formed. It should be noted that the hot air cylinder 3 is made of a material having high thermal conductivity.
When 6 is formed, the number of hot air cylinders 36 to be attached may be reduced. In this way, the resistance of the inflowing air is small. The above is the same in other embodiments.

FIG. 55 of the nineteenth embodiment is different from the eighteenth embodiment (FIG. 5).
The intermediate ring 35 (see FIG. 3 and FIG. 54) is formed so as to cover the spinner 13, and a plurality of discharge ports 33 are provided at the tip. Then, the hot air ring 30 is inserted into the intake port 9,
When the gap between the intermediate ring 35 and the spinner 13 is several millimeters, a hot air ring 30 is
And a hot air tube 31 is connected to the hot air ring 30.

FIG. 56 and FIG. 57 of the twentieth embodiment
A spinner mounting cylinder 4 with a single flange 3 is attached to the front surface, a spinner 13 whose bottom has the same diameter as the spinner mounting cylinder 4 is attached to the tip, and a few millimeters from the length of the spinner mounting cylinder 4.
Intermediate ring 35 with a short diameter and a large diameter of several millimeters
The tip has the same inclination as the spinner 13 and is provided with a plurality of outlets 33. A plurality of hot air cylinders 36 are radially mounted between the intermediate ring 35 and the hot air ring 30 in the radial direction. The ventilation plate 26 is attached to the front surface of the cylinder 36. Then, the hot air ring 30 is inserted into the intake port 9 so that the front surface of the intermediate ring 35 has the same slope as the spinner 13 and the gap between the rear surface of the intermediate ring 35 and the one flange 3 is several millimeters. Attach the hot air ring 30 to the air inlet 9 with bolts 15
0 is connected to a hot air tube 31.

In FIGS. 58 to 60 of Embodiment 21, FIGS. 58 and 59 show Embodiments 18 to 20 (FIGS. 53 to 5).
7) The intermediate ring 35 is formed in a spindle shape, a plurality of outlets 33 are formed in the intermediate ring 35, and a plurality of hot air cylinders 36 are formed between the intermediate ring 35 and the hot air ring 30. The ventilation plate 26 is attached to the front of each hot air cylinder 36 in a radial direction. Thus, the hot air ring 30 is inserted into the intake port 9, and the hot air ring 30 is inserted in front of the spinner 13 which is not affected by the fan 2 and noise even when the amount of air flowing into the compressor changes. A hot air tube 31 is connected to the hot air ring 30. FIG. 60 is a cross-sectional view of FIG.
Although it is formed in an inverted conical shape as in FIG. 1, it may be formed in a conical shape as shown in FIG. 33 of the eleventh embodiment. In some cases, the inverted conical surface and the conical surface may be formed in a spherical shape. The above is the same in other embodiments.

FIGS. 61 to 63 of the twenty-second embodiment show that the hot air cylinders 36 are attached to the hot air ring 30 in the vertical direction at the same pitch.
The ventilation plates 26 are attached to the front surface of each of the hot air cylinders 36 at the same pitch in a direction perpendicular to the hot air cylinders 36, and the hot air cylinders 36 and the ventilation plates 26 are formed longer in the direction of the fan 2 toward the center to increase the sectional performance. It has a structure. Further, a plurality of outlets 33 are provided in the hot air ring 30 on the symmetric side with the hot air tube 31. Then, the hot air ring 30 is inserted into the intake port 9, and the hot air ring 30 is attached to the front side of the spinner 13 and the bolt 15 is attached to the intake port 9 as in Embodiment 21 (FIGS. 58 to 60).
And a hot air tube 31 is connected to the hot air ring 30.

FIGS. 64 and 65 of the embodiment 23 show the wire mesh 37.
A hot air ring 30, a hot air cylinder 36 formed in an inverted conical shape,
It is closely attached to the surface of the intermediate ring 35 and the like, and is partially welded. This embodiment can be applied to other embodiments.

The embodiments 18 to 23 (FIGS. 53 to 6)
The hot air ring 30 of 5) is inserted into the intake port 9 in order to facilitate attachment and detachment during maintenance. However, as in the seventeenth embodiment (FIGS. 50 to 52), the hot air ring 30 is
It may be mounted inside the device. On the contrary, Example 17 (FIG. 5)
The hot air ring 30 mounted in the case of the engine 1 of FIGS.
As in 5), it may be inserted into the air inlet 9 and attached.

FIGS. 66 to 79 of the twenty-fourth embodiment are shown in FIG.
8 are formed in a conical shape, facing forward, and hot air blowing holes 39 are formed at a plurality of locations on the inner circumference of the hot air ring 30.
No. 0 is attached and a nozzle is provided in front of the center of the hot air film 38.
A dome-shaped hot air concentrating cylinder 41 is attached, a nose dome 32 is attached to the tip, and a plurality of outlets 3 are provided.
3 are provided. Note that, without attaching the nose dome 32, only the discharge port 33 may be provided at the rear, and the hot air film 38 may be formed in a spherical shape. The above is the same in other embodiments. Thus, the hot air ring 30 is mounted slightly forward of the spinner 13, and a hot air tube 31 is connected to the hot air ring 30. In some cases, hot air ring 3
0 may be attached closer to the fan 2 side. Fig. 68
The hot air film 38 is formed in an inverted cone shape and the hot air concentration tube 41 is formed to be longer, and a plurality of outlets 33
Is provided. FIG. 69 shows that the front surface of the hot air film 38 is formed in a flat shape, and the rear surface is formed in an inverted conical shape to increase the strength, thereby increasing the section modulus and forming the hot air concentration tube 41 longer.
A plurality of outlets 33 are provided at the tip. The front surface may be formed in a conical shape, and the rear surface may be formed in a flat shape.
The rear surface may be formed in a coplanar shape or a conical shape. FIG.
FIGS. 6 to 69 show the hot air ring 30 housed in the case of the engine 1.
It may be attached to the intake port 9 as in 5). The same applies to the twenty-fifth embodiment (FIGS. 80 and 81). FIG.
FIGS. 70 and 71 show examples of mounting of the divergent divergent type vent hole 40 from FIG. 0 to FIG. 77, and FIG. Attached. FIG. 71 shows a horizontally attached hot-air film 38 attached obliquely. 72 and 73 show the case where the divergent vent hole 40 is installed in reverse. FIG. 72 shows a case where the air hole 40 is installed horizontally at a hot air film 38 which is installed at right angles to the intake port 9. FIG. 73 shows a horizontal installation on the oblique hot air film 38. In FIG. 74, a vent hole 40 provided with a trumpet-shaped flange is horizontally mounted on a hot-air film 38 which is mounted at right angles to the intake port 9. Figure 75
Are horizontally mounted on the oblique hot air film 38. FIG.
6 is a hot air film 38 attached at right angles to the intake port 9,
Various air holes 40 are mixed and attached. In FIG. 77, various ventilation holes 40 are mixed and attached to the oblique hot air film 38. In the above, various air holes 40 are attached to the hot air film 38. If there is a vent hole having a triangular, oval, elliptical, honeycomb, or other appropriate shape, it may be attached alone or in an appropriate mixture. Alternatively, the ventilation hole 40 may be formed by directly pressing the hot air film 38, or another ventilation hole 40 may be mixed and attached to the ventilation hole 40.
Moreover, although the vent hole 40 was attached horizontally,
The angle may be changed as appropriate for attachment. The same applies to the twenty-fifth embodiment (FIGS. 80 and 81). FIG. 78 shows the spinner 1 of FIG. 56 in the twentieth embodiment (FIGS. 56 and 57).
A hot-air film 38 is formed on and attached to the three intermediate rings 35 in an inverted conical shape.

FIGS. 80 and 81 of Embodiment 25 show Embodiment 2.
The hot air film 38 of FIG. 4 (FIGS. 66 to 79) is divided into a plurality of sections so that even if one section breaks, the circulation of hot air is not adversely affected.
A plurality of webs 42 are radially mounted in the hot air film 38 from the outer circumference of the hot air concentration tube 41 toward the inner circumference side of the hot air ring 30, and each section partitioned by the webs 42 is provided. A large number of ventilation holes 40 are installed in the inside and hot air blowing holes 39 are provided at a plurality of locations on the inner periphery of the hot air ring 30.
One or a plurality of outlets 33 are formed in the hot air concentrating cylinder 41, and a nose-dome-shaped outlet 33 is provided at the tip of the hot air concentrating cylinder 41. As described above, when the web 42 is attached to the hot-air film 38, the strength against the collision pressure increases, so that the hot-air film 38 can be formed to be thin, and the air holes 40 are shortened accordingly, and the air flow is reduced. It becomes better and the weight can be reduced. In order to further increase the strength of the hot air film 38 against the collision pressure, the web 42
Or the hot air film 38 or the like is formed of a thick material. If the apex angle of the conical or inverted conical shape is reduced, the collision object slides outside the hot air film 38 and flows lightly rearward, so that the collision pressure can be reduced. It should be noted that, when the ram pressure is recovered during the inflow of air in the direction of the fan 2 and there is a concern that the inlet distortion or other efficiency may be reduced or the amount of inflowing air may be reduced, anti-icing measures are taken at the intake port 9. A bellmouth-shaped air inlet may be attached or the air inlet 9 may be formed in a trumpet shape so that there is no duct loss. The same applies to the other embodiments, and when the strength of the hot air film 38 can be sufficiently established by various countermeasures against the collision pressure, the weight of the web 42 is reduced as much as possible.
It is not necessary to make a relief hole or to attach the web 42.

82 to 85 of the twenty-sixth embodiment, FIG. 82 shows the outer hot air ring 4 covering the outer circumference of the inlet of the air inlet 9.
7, a conical hot air film 38 is formed on the front surface of the outer peripheral hot air ring 47, and the hot air film 38 and the outer peripheral hot air ring 4 are formed.
A partition plate 48 is attached between the 7 and the partition plate 4.
8, hot air blowing holes 39 are formed at several locations on the circumference. Thus, the outer hot air ring 47 is attached to the outer circumference of the inlet of the air inlet 9 with the bolt 15 and the hot air tube 31 is connected. In this embodiment, the oblong air holes 40 are mounted, but other air holes 40 may be mounted or mixed with various air holes 40. FIG. 84 shows a hot air film 38 for the intake port 9 having a vertical front surface, the surface of which is formed in a spherical shape. This embodiment can be applied to other embodiments. FIG. 85 shows a case where the inner periphery of the outer peripheral hot air ring 47 is formed in a trumpet shape toward the front surface, and FIG.
A hot air film 38 having a diameter larger than 2 is formed, and the hot air film 38 is provided with a larger number of air holes 40 than in FIG. In addition, in each drawing of the present embodiment, a center line is drawn to indicate a mounting direction of the hot air film 38 with respect to the intake port 9. FIG. 82 and FIG.
5 is formed in a direction perpendicular to the intake port 9 inclined forward, so that the center line of the hot-air film 38 is lower than the center line of the intake port 9. Since FIG. 84 is formed in the direction of the vertical intake port 9,
The hot air film 38 in FIGS. 82 and 85 is also formed so as to face the front so as to have the same center line, or the hot air film 38 in FIG. The center line of the hot-air film 38 may be lower than the center line of the intake port 9. The above is Example 2
7 (FIGS. 86 to 93).

86 to 93 of the twenty-seventh embodiment, FIG. 86 shows an outer hot air ring 4 covering the outer circumference of the inlet port 9.
7 are formed, and a small diameter hot air concentrating pipe 49 is sequentially provided in front of the outer peripheral hot air ring 47 in two stages, and the smallest diameter collecting plate 5
0, and a protective hot air pipe 51 having a smaller diameter than the hot air concentrating pipe 49 is attached in a spherical or conical shape at a predetermined interval in the direction of the collecting plate 50 between them, and the tip of the protective hot air pipe 51 is bent forward. A nose dome 32 having a plurality of discharge ports 33 is attached to the collecting plate 50 with bolts 15. Thus, the protective hot air tube group 5 thus configured
2 is put on the outer periphery of the inlet of the intake port 9 and attached with bolts 15, and the hot air tube 31 is connected. At this time, the protective hot air tube 5
Although all of them are mounted at the same interval, the space between the hot air concentration pipe 49 of the second stage and the nose dome 32 may be narrowed, or the intervals of other portions may be appropriately narrowed. In addition, hot air concentration pipe 4
9 are arranged in two stages, but when the difference in the interval (A and B in FIG. 89) between the portions where the protective hot air tubes 51 are attached is reduced, three or more stages are arranged and the distance for each stage is gradually reduced. Better.
Further, in order to reduce the resistance of air, the hot air concentration pipe 49 and the protective hot air pipe 51 may be sequentially formed to have a smaller diameter for each stage. FIG.
Is an embodiment of the protective hot air pipe group 52, in which the hot air concentrating pipe 49 is formed in a streamline shape, and the protective hot air pipes 51 are attached before and after this. In FIG. 91, the inner circumference of the outer hot air ring 47 is formed in a trumpet shape toward the front, and a protective hot air tube group 52 larger than that of FIG. 86 is attached to the front of the outer hot air ring 47.
When the amount of intake air is increased, the wrapper portion of the hot air ring 30 may be formed to have a larger diameter. In FIG. 92, an inverted conical protective hot air tube group 52 is mounted in the air inlet 9. FIG.
Reference numeral 3 shows a conical protective hot air tube group 52 mounted in the intake port 9. The protective hot air tube group 52 shown in FIGS. 92 and 93 may be formed in a spherical shape.

In each of the above embodiments, the first to 16th embodiments are described.
In FIGS. 1 to 49, the protection net 12 and the like are rotated at the same speed as the fan 2, but the speed may be increased or decreased from the fan 2 by any method. It may be stopped in an airspace where there is no risk of strike, and rotated only when icing is expected. Further, in order to increase the protection effect of the bar strike, the spinner mounting cylinder 4 is formed to be longer, and the same or another type of protection net 12 is combined with the spinner mounting cylinder 4 and mounted in a double or triple manner. The protective measures described above may be implemented, and the rotational directions may be changed from each other by a certain method such as a double inverted propeller. or,
In order to simplify the structure, a bolt mounting seat may be provided on the fan 2 and the protective net 12 or the like may be directly mounted on the fan mounting seat. In order to facilitate attachment / detachment of the inner cylinder 5 and to maintain a certain rotational force, Key-6 should be a spline type.
Although only one hot air tube 31 of each of Examples 17 to 27 (FIGS. 50 to 93) is attached, a plurality of hot air tubes 31 are attached to the entire circumference for safety. It is better to implement double and triple safety measures so that the devices operate simultaneously, and if one system fails, the other systems can operate safely. Note that the protective net 12, the ventilation plate 26, the ring 28, the wire mesh 3 in each embodiment are used.
7 and other parts hit by collision objects have a large impact value,
In addition, a spring material having a high toughness or a material similar thereto is preferable, and if there is corrosion resistance or other suitable material, it may be used.

[0034]

The protective net 12 of the first embodiment (FIGS. 1 to 3)
Is made of a tough spring material or a similar material having a large impact value. Therefore, even if a bird tries to be sucked into the engine 1 during takeoff and landing or flying at a low altitude, the rotating protective net 12 will prevent the bird from being sucked into the engine 1. Take it, do not hit Juan 2 directly. At this time, a strong collision pressure is about to be applied to the front protection net 12, but the front protection net 12 rotating at a high speed is instantaneously crushed and cut by the protection net 12 from the lateral direction. In a state in which the protection net 12 is almost gone, the protection net 12 on the rear side is again miniaturized and cut again from the lateral direction, so that the collision pressure disappears and a mere air flow occurs. Therefore, since it does not directly hit the fan 2, it is not broken or damaged. In particular, the protection net 12 is safe because it rotates and does not always ice due to the action of centrifugal force. The above effects can be obtained from Examples 1 to 16 (FIGS. 1 to 4).
The same applies to 9).

The second embodiment (FIGS. 4 and 5) uses the protection net 1
Since the mesh of No. 2 was made thinner than in Example 1 (FIGS. 1 to 3), the collision object can be further pulverized and miniaturized. Therefore, fan 2 is safe. In addition, since the outer cylinder 10 is formed to be narrow, the protection net 12 can be easily attached and detached.

In the third embodiment (FIGS. 6 to 8), when the protective net 12 is obliquely attached to the outer cylinder 10 and viewed from the front,
With a small number, the mesh is made thin as in the second embodiment (FIGS. 4 and 5), which is economical.

In the fourth embodiment (FIGS. 9 to 11), the protective net 12 is attached from above the outer cylinder 10.
The attachment and detachment of the protection net 12 is easy. Further, since the protective net 12 was attached to the outer cylinder 10 at an angle, the third embodiment (FIG.
8 to FIG. 8).

In the fifth embodiment (FIGS. 12 to 14), the protection net 12 is fitted into the protection net mounting groove 17 from above so as to be attached and detached easily. Therefore, it is suitable for application to other embodiments.

In the sixth embodiment (FIGS. 15 to 18), since the protection net 12 is attached with the bolt 15 and the cap bolt 24, it can be easily replaced when the protection net 12 is deformed or damaged. Further, since the front and rear protection nets 12 are attached in a staggered manner, the same effects as in the third embodiment (FIGS. 6 to 8) can be obtained.

In the seventh embodiment (FIGS. 19 to 22), since the protection net 12 can be attached simply by screwing it, it can be easily replaced when the protection net 12 is deformed or damaged.
The other effects are the same as those of the sixth embodiment (FIGS. 15 to 18).

In the eighth embodiment (FIGS. 23 to 30), when the protection nets 12 in each row (rows A to D) are viewed from the spinner 13 side, they are shifted so as not to overlap, and the mesh is made thin. The product can be crushed and refined effectively and it is safe. In addition, since the anti-vibration measures are implemented by the protection nets 12 in the rows B and C, the outer cylinder 10 can be smoothly rotated / stopped without swinging at the time of rotation or stop such as starting / acceleration. In addition, since the protection net 12 can be attached simply by inserting one end of the protection net 12 and screwing the other end, it can be easily replaced when the protection net 12 is deformed or damaged.

In the ninth embodiment (FIG. 31), since the protection net 12 is formed in an inverted conical shape, even if an impact pressure is applied, the protection net 12 is dispersed in the direction of the base of the protection net 12 and miniaturized. Sex is increased and safe.

In the tenth embodiment (FIG. 32), the protection net 12
Is formed in a slightly shallow inverted conical shape, so that the structure can be simplified.

The eleventh embodiment (FIG. 33)
Is formed in a slightly forward-looking conical shape so that it acts as a tensile force even if collision pressure is applied, so that it is safe to use.

In the twelfth embodiment (FIGS. 34 to 37), the front and rear protective nets 12 are separately mounted, respectively.
Moreover, since the end is bent after the attachment, the attachment / detachment is easy.

In the thirteenth embodiment (FIGS. 38 to 41), the front and rear protective nets 12 are separately mounted, all are mounted from the front side, and the ends are bent, so that the impact resistance is increased and the detachable Is easy.

In the fourteenth embodiment (FIG. 42), isosceles triangular steady rests are attached at several equally spaced locations on the circumference.
The outer cylinder 10 can be smoothly rotated and stopped without rotating at the time of rotation or stop such as starting and acceleration. This embodiment can be applied to other embodiments.

In the fifteenth embodiment (FIGS. 43 to 45), a concentric ventilation plate 26 is attached to the protective net 12, and a sharp or R-shaped blade 27 is formed at the tip. Even if you try to grind instantly, furthermore, the protective net 12
, The collision pressure disappears, and the air becomes a mere flow of air. Therefore, the fan 2 is not damaged. or,
Since the ventilation plate 26 is formed in a streamlined shape, air can easily pass through.

In the sixteenth embodiment (FIGS. 46 to 49),
In FIG. 46, a concentric ring 28 made of a spring wire is attached to the rear protective net 12, so that the collision object can be further miniaturized. In FIG. 48, since the rings 28 are alternately sewn on the protection net 12 on the rear side formed in an inverted conical shape to form a net shape, the strength of the protection net 12 can be increased. Fig. 49 shows the front and rear protective nets 1
Since the ring 28 is attached to 2, the colliding object is easily crushed and miniaturized.

In the seventeenth embodiment (FIGS. 50 to 52), since the ring 28 is attached to the entrance guide blade 29, even if a collision object hits, it is instantaneously crushed.
, The fan 2 is not broken or damaged. Further, since the protection net 12 is heated by heat conduction from the entrance guide wings 29, it is safe even when flying at low temperatures without icing.

In the eighteenth embodiment (FIGS. 53 and 54), a hot air ring 30 is attached to the intake port 9, a hot air cylinder 36 is provided between the hot air ring 30 and the intermediate ring 35, and a ventilation plate 26 is provided to the hot air cylinder 36. Since it is attached, even if a collision object hits, it is instantly crushed and further crushed by hitting the hot air cylinder 36, so that the fan 2 is not broken or damaged. Hot air ring 3
0, the hot air cylinder 36 and the intermediate ring 35 are heated by the hot air blown from the hot air pipe 31, and the ventilation plate 26 is also heated by being conducted from the hot air cylinder 36, so that even if the airplane flies at a low temperature, it does not icing and is safe. is there. Also, since the hot air ring 30 is attached to the intake port 9, it can be easily attached and detached during repair or maintenance of the engine 1.
Note that the hot air cylinder 36 and the ventilation plate 26 are integrally formed so that the fan 2
In the direction, a composite structure having a large section modulus is formed, and at the same time, the blade 27 is crushed and the collision pressure is reduced even if a large collision pressure is applied. It is also safe. The above effects are obtained in the nineteenth embodiment.
The same applies to FIGS. To 22 (FIGS. 55 to 63).

FIG. 55 of the nineteenth embodiment shows that the tip is a spinner 1
3, the air flows into the fan 2 efficiently.

In the twentieth embodiment (FIGS. 56 and 57), the tip of the intermediate ring 35 is formed in the same shape as the spinner 13, so that the air flows into the fan 2 efficiently.

In the embodiment 21 (FIGS. 58 to 60), the intermediate ring 35 is formed in the shape of a spindle, and is attached to the front side of the spinner 13.
The air efficiently flows into the fan 2 and does not affect the fan 2 or the compressor. Therefore, it is effective in reducing engine 1 noise.
FIG. 60 is formed in an inverted conical shape and the distance from the fan 2 is further increased, so that the intake noise of the engine 1 can be reduced and an appropriate inflow air velocity can be obtained.

In the twenty-second embodiment (FIGS. 61 to 63), the structure can be simplified because the hot air cylinder 36 and the ventilation plate 26 are attached to the hot air ring 30 at right angles. Further, since this embodiment is attached to the front side of the fan 2 and the distance to the fan 2 is increased, the same effect as that of the embodiment 21 (FIGS. 58 to 60) can be obtained.

Embodiment 23 (FIGS. 64 and 65)
7 is closely attached to the front and side surfaces of the hot air ring 30, the hot air cylinder 36, the intermediate ring 35, etc., so that heat conductivity is good and icing does not occur. Even if a collision object hits, it is formed in an inverted conical shape, flows along the slope, and is further miniaturized by the wire mesh 37, so that the collision pressure becomes a mere flow of air, which is safe. Further, since the residue accumulates on the side of the intermediate ring 35, the residue does not hinder the flow of air, and the residue is easily cleared during maintenance of the aircraft.

In Example 24 (FIGS. 66 to 79),
FIG. 66 shows that the hot-air film 38 is formed in a conical shape and has strength enough to withstand the collision pressure, so that sufficient strength can be obtained even when a collision object hits, and the residue accumulates in the hot-air ring 30 part. In addition, since the air holes 40 are provided in the direction of the fan 2 for easy cleaning during maintenance of the aircraft, the air flow is good.
The hot air that has entered the hot air ring 30 from the hot air tube 31 is blown into the hot air film 38 from each hot air blowing hole 39 of the hot air ring 30, and the hot air is blown into the front and rear surfaces of the hot air film 38 and the countless ventilation holes 40. Since the air is discharged from the discharge port 33 while heating the entire circumference, it is safe even when flying at low temperatures without icing. Further, since the hot air film 38 is attached to the intake port 9, it can be easily attached and detached during repair or maintenance of the engine 1. FIG. 68 shows that the hot air film 38 is formed in an inverted conical shape and the residue is collected in the intermediate ring 35 so that the air flow is good, and the outlet 33 is formed by making the hot air concentration tube 41 longer. The outlet 33 is not blocked by the residue. FIG.
Since the rear surface of the hot air film 38 is formed in an inverted conical shape and the section modulus is increased, it is safe even if an impact object hits. 70 to 77, since the entrance of the vent hole 40 in FIGS. 70 and 71 is tapered, air is sucked in without resistance.
Further, since the vent hole 40 has a narrowed central portion, the hot air easily passes through the portion, so that the hot air goes around the perimeter and the front of the hot air film 38.
Since it is discharged from the discharge port 33 while heating the rear surface, it is safe without icing. In FIGS. 72 and 73, since the tape-shaped ventilation holes 40 are attached, the air that has entered the air inlet 9 is sucked in without resistance, and the hot air easily passes between the ventilation holes 40. Since it is discharged from the discharge port 33 while heating the periphery and the front and rear surfaces of the hot air film 38, it is safe without icing. 74 and 75 show the trumpet-shaped vent hole 40,
Because the entrance is smooth, it is easy to pass air. Further, since the hot air easily passes around the ventilation hole 40, it is safe without icing.
76 and 77, various air holes 40 each having characteristics of air suction and air flow are mixed and attached, so that the synergistic effect of the characteristics of each air hole 40 results in a good air flow and a fan 2. Because you are sucked, you can always fly safely. Also in this case, since the hot air easily passes around the ventilation hole 40, it is safe without icing. In FIG. 78, since the hot air film 38 is formed on the intermediate ring 35 around the spinner 13, it is suitable for the engine 1 in which the distance from the intake port 9 to the fan 2 is short.

FIGS. 80 and 81 of Embodiment 25 show Embodiment 2.
The hot air film 38 of FIG. 4 (FIGS. 66 to 79) is divided into several sections as viewed from the front, and even if one section is torn, the other parts operate to allow the passage of hot air, which is safe. Other effects are the same as those of the twenty-fourth embodiment (FIGS. 66 to 79).

FIG. 82 in the twenty-sixth embodiment (FIGS. 82 to 85) shows that the hot air film 38 is put on the front surface of the air inlet 9 so that the collision object slides outside the hot air film 38 and flows lightly backward. As a result, a collision object does not enter the air inlet 9, which is safe, and the hot air film 38 does not receive an impact, so that it is not damaged or deformed. or,
This device can be easily attached and detached when the engine 1 is maintained. Further, the hot air film 38 is attached in the direction of the intake port 9 inclined forward, so that the air can be effectively sucked in. Even if the hot air film 38 and the ventilation hole 40 are on the outside, they are heated by the hot air, so that even at low temperature flight. You can fly safely without icing. FIG. 84 is easy to manufacture because it can be formed axially symmetrically for the intake port 9 having a vertical front surface. In FIG. 85, a large-diameter hot air film 38 provided with a larger amount of ventilation holes 40 than in FIG. 82 is attached to the front surface of an outer peripheral hot air ring 47 having an inner periphery formed in a trumpet shape. I can guide you. Therefore, it is suitable to be implemented when there is a concern about a decrease in the amount of inflow air.

FIG. 86 shows Embodiment 27 (FIGS. 86 to 93) in which the group of protective hot air tubes 52 is put on the front surface of the intake port 9 and the collision object is made to slide outside the group of protective hot air tubes 52 and to the rear. Since it is made to flow lightly, a collision object does not enter the intake port 9 and it is safe, and the protective hot air tube group 52 does not receive an impact.
Does not deform. In addition, the device can be easily attached and detached when the engine 1 is maintained. Even if the protective hot air tube group 52 is on the outside, the hot air blown from the hot air tubes 31 is equalized by the outer peripheral hot air ring 47 and passes through the protective hot air tubes 51, and the first and second stages of protection are sequentially performed. The hot air that has been equalized by the hot air pipes 51 and has been equalized passes through the front protective hot air pipes 51 and uniformly heats the entire protective hot air pipe group 52 and is discharged from the discharge port 33. You can fly safely without icing. The effect of FIG. 91 is the same as that of FIG.
2 to FIG. 85) is the same as FIG. 85. In FIG. 92, an inverted cone-shaped protective hot air tube group 52 is mounted in the intake port 9 so that the residue accumulates around the nose dome 32, so that the engine 1 can be easily cleaned during maintenance. In FIG. 93, since the conical protective hot air tube group 52 is attached to the intake port 9 and the collision pressure acts as a compression action, it is safe.

In each of the above embodiments, the protective net 12 and the like are assembled as in each of the first to twenty-seventh embodiments (FIGS. 1 to 93), and when the structure is deformed by a collision object or the like, the protective net 12 is replaced. For example, the maintenance of the engine 1 can be performed promptly and accurately, and the deformed parts can be quickly replaced again the next time if the set is replaced or replaced after the maintenance of the engine 1. You can always fly safely. In addition, since each embodiment is interchangeable, it can be appropriately replaced with another embodiment according to the flight situation, or the spinner mounting tube 4 can be formed to be longer, and the same or multiple types of protective nets 12 can be used.
May be used in combination. Examples 1 to 16 (FIG. 1)
To FIG. 49) and Examples 17 to 27 (FIGS. 50 to 9).
3) may be used in combination as appropriate. Further, if another embodiment is applied to each embodiment, a protection device that integrates the features of each embodiment can be used, and the safety of the aircraft can be further improved. Also, the weight of the inner cylinder 5, the protective net 12, the outer cylinder 10, etc. is extremely small compared to the weight of the shaft itself and the total weight of the fan, compressor and other rotating parts attached to the shaft. Even if it hits and deforms, it does not generate vibration even if it loses some balance, so it does not hinder the operation of the engine 1. In addition, since the protective net 12 is elastic, even if it hits with an impact, it is destroyed.・ It is safe to use without damage. In addition, the rotating protective nets 12 and the like of the first to sixteenth embodiments (FIGS. 1 to 49) are safe because they do not icing due to the action of centrifugal force even when flying in a low temperature condition. Similarly, Examples 17 to 27 (FIGS. 50 to 93)
Is safe because it is heated by hot air without icing. or,
Each of the above devices has a good air flow, all the air entering the intake port 9 is sucked into the fan 2, and there is no change in the pressure distribution and air flow, so that the device can always fly in good condition, Depending on the conditions, if one in each embodiment is appropriately selected and attached, it is possible to fly in a better condition, and when residue adheres, remove, air,
It can be easily removed by spraying steam, hot water or the like. Also, if each device is formed in a conical or inverted conical or spherical shape, and the apex angle is reduced, even if collision pressure is applied, the collision object is cut, crushed, and miniaturized in the inclined direction. In the process, the collision pressure is also divided and dispersed and miniaturized, resulting in a simple air flow, and the embodiments 26 and 27 (FIGS. 82 to 93) move the collision object outward. To prevent a collision object from entering the intake port 9, the fan 2 and the engine 1 are safe, and each device is not broken or damaged, and is safe in strength. It should be noted that the structure of the present invention is simple, and a newly manufactured aircraft (wing suspension,
All types of engines, such as wing-in-wing, fuselage side or rear, and fuselage-mounted engines), as well as those that can be easily attached to aircraft in service, so that they have features that can prevent bird strikes immediately. It is.

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 4, 1998 (1998.12.
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

BRIEF DESCRIPTION OF THE DRAWINGS Embodiment 1 (FIGS. 1 to 3)

FIG. 1 is a vertical sectional front view of a first embodiment.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a left side view of FIG. 1; Example 2 (FIGS. 4 and 5)

FIG. 4 is a vertical sectional front view of the second embodiment.

FIG. 5 is a left side view of FIG. Example 3 (FIGS. 6 to 8)

FIG. 6 is a longitudinal sectional front view of a third embodiment.

FIG. 7 is a partial plan view of the outer cylinder 10 of FIG.

FIG. 8 is a left side view of FIG. Example 4 (FIGS. 9 to 11)

FIG. 9 is a vertical sectional front view of the fourth embodiment.

FIG. 10 is a partial plan view of the outer cylinder 10 of FIG.

FIG. 11 is a left side view of FIG. 9; Example 5 (FIGS. 12 to 14)

FIG. 12 is a vertical sectional front view of the fifth embodiment.

13 is an enlarged vertical sectional front view of a line A in FIG. 12;

14 is a left side view of FIG. Example 6 (FIGS. 15 to 18)

FIG. 15 is a vertical sectional front view of the sixth embodiment.

16 is a vertical sectional front view showing an example of assembling the protection net 12. FIG.

FIG. 17 is a left side view of FIG.

FIG. 18 is a right side view of FIG. Example 7 (FIGS. 19 to 22)

FIG. 19 is a vertical sectional front view of the seventh embodiment.

20 is a longitudinal sectional front view showing an example of assembling the protection net 12. FIG.

21 is a left side view of FIG.

FIG. 22 is a right side view of FIG. Example 8 (FIGS. 23 to 30)

FIG. 23 is a vertical sectional front view of the eighth embodiment.

24 is a detailed view of the protective net 12 and the cap bolt 24. FIG.

25 is a vertical sectional side view taken along line B of FIG. 24.

FIG. 26 is a left side view of the column in FIG. 23A.

FIG. 27 is a left side view of the column in FIG. 23B.

FIG. 28 is a left side view of the column C in FIG. 23;

FIG. 29 is a left side view of the column D in FIG. 23;

FIG. 30 is a left side view of FIG. 23, in which the protection nets 12 in rows A to D are collectively represented. Example 9 (FIG. 31)

FIG. 31 is a vertical sectional front view of the ninth embodiment. Example 10 (FIG. 32)

FIG. 32 is a vertical sectional front view of the tenth embodiment. Example 11 (FIG. 33)

FIG. 33 is a vertical sectional front view of the eleventh embodiment. Example 12 (FIGS. 34 to 37)

FIG. 34 is a vertical sectional front view of the twelfth embodiment.

FIG. 35 is a vertical sectional front view showing an example of attachment of the first-stage protection net 12;

FIG. 36 is a longitudinal sectional front view showing an example of attachment of the third-stage protection net 12;

FIG. 37 is a left side view of FIG. 34. Example 13 (FIGS. 38 to 41)

FIG. 38 is a vertical sectional front view of the thirteenth embodiment.

FIG. 39 is a longitudinal sectional front view showing an example of attachment of the first-stage protection net 12;

FIG. 40 is a longitudinal sectional front view showing an example of attachment of the protection net 12 of the second stage.

FIG. 41 is a left side view of FIG. 38. Example 14 (FIG. 42)

FIG. 42 is a front view of the fourteenth embodiment. Example 15 (FIGS. 43 to 45)

FIG. 43 is a vertical sectional front view of the fifteenth embodiment;

FIG. 44 is a left side view of FIG. 43.

FIG. 45 is an enlarged cross-sectional view of the ventilation plate 26. Example 16 (FIGS. 46 to 49)

FIG. 46 is a longitudinal sectional front view of the sixteenth embodiment.

FIG. 47 is a left side view of FIG. 46.

FIG. 48 is a longitudinal sectional front view when the protection net 12 is formed in a conical shape toward the front.

FIG. 49: Rings 28 on the front and rear sides of the protective net 12
It is a vertical front view at the time of attaching. Example 17 (FIGS. 50 to 52)

FIG. 50 is a vertical sectional front view of the seventeenth embodiment.

FIG. 51 is a left side view of FIG. 50.

FIG. 52 is a left side view showing an example of how the ring 28 is attached. Example 18 (FIGS. 53 and 54)

FIG. 53 is a vertical sectional front view of the eighteenth embodiment.

FIG. 54 is a left side view of FIG. 53. Example 19 (FIG. 55)

FIG. 55 is a vertical sectional front view of the nineteenth embodiment; Example 20 (FIGS. 56 and 57)

FIG. 56 is a vertical sectional front view of the twentieth embodiment;

FIG. 57 is a left side view of FIG. 56. Example 21 (FIGS. 58 to 60)

FIG. 58 is a longitudinal sectional front view of the twenty-first embodiment.

FIG. 59 is a left side view of FIG. 58.

60 is a vertical sectional front view showing the application example of FIG. 58. Example 22 (FIGS. 61 to 63)

FIG. 61 is a longitudinal sectional front view of the twenty-second embodiment.

FIG. 62 is a partial cross-sectional plan view taken along line C of FIG. 61.

FIG. 63 is a longitudinal sectional side view taken along line D of FIG. 61. Example 23 (FIGS. 64 and 65)

FIG. 64 is a longitudinal sectional front view of the twenty-third embodiment.

FIG. 65 is a left side view of FIG. 64. Example 24 (FIGS. 66 to 79)

FIG. 66 is a longitudinal sectional front view of Example 24;

FIG. 67 is a left side view of FIG. 66.

FIG. 68 is a view showing a configuration in which the hot air film 38 is formed in an inverted conical shape toward the rear.

FIG. 69 is a view showing a configuration in which the front surface of the hot-air film 38 is formed in a flat shape and the rear surface is formed in an inverted conical shape.

FIG. 70 is a longitudinal sectional side view when a convergent-divergent type ventilation hole 40 is horizontally mounted on a hot air film 38 perpendicular to the intake port 9;

FIG. 71 is a vertical sectional side view when the ventilation hole 40 is attached to the oblique hot air film 38.

FIG. 72 is a vertical cross-sectional side view when the divergent vent hole 40 is mounted horizontally on the hot air film 38 perpendicular to the intake port 9;

73 is a vertical sectional side view when the ventilation hole 40 is attached to the oblique hot air film 38. FIG.

74 is a vertical sectional side view when a trumpet-shaped vent hole 40 is attached to a hot air film 38 perpendicular to the intake port 9. FIG.

75 is a vertical sectional side view when the ventilation hole 40 is attached to the oblique hot air film 38. FIG.

76 is a vertical sectional side view in a case where various ventilation holes 40 are mixed and attached to a hot air film 38 perpendicular to the intake port 9. FIG.

77. Various ventilation holes 40 are formed in the oblique hot air film 38.
It is a longitudinal side view when mixing and mounting.

FIG. 78 is a longitudinal sectional front view showing an application example of the hot air film 38.

FIG. 79 is a left side view of FIG. 78. Example 25 (FIGS. 80 and 81)

FIG. 80 is a vertical sectional front view taken along line EE in FIG. 81;

FIG. 81 is a longitudinal sectional side view taken along line FF of FIG. 80; Example 26 (FIGS. 82 to 85)

FIG. 82 is a longitudinal sectional front view of the twenty-sixth embodiment;

FIG. 83 is a left side view of FIG. 82.

FIG. 84 is a vertical sectional front view showing the hot air film 38 for the intake port 9 having a vertical front surface.

85 is a vertical sectional front view of a hot air film 38 in which the inner periphery of an outer peripheral hot air ring 47 is formed in a trumpet shape. FIG. Example 27 (FIGS. 86 to 93)

FIG. 86 is a vertical sectional front view of the twenty-seventh embodiment.

87 is a vertical sectional side view taken along line GG of FIG. 86.

FIG. 88 is a left side view of FIG. 86.

FIG. 89 is an enlarged view of a portion B in FIG. 88.

90 is a view showing one embodiment of a protective hot air tube group 52. FIG.

91 is a vertical sectional front view of a group of protective hot air tubes 52 in which the inner circumference of an outer hot air ring 47 is formed in a trumpet shape. FIG.

FIG. 92 is a configuration diagram in a case where a group of protective hot air tubes 52 formed in an inverted conical shape is attached to the inside of the air inlet 9.

93 is a view showing a configuration in which a group of protective hot air tubes 52 formed in a conical shape is mounted in the air inlet 9. FIG.

[Description of Signs] 1 ... Jet engine 2 ... Fan 3 ... Single flange 4 ... Spinner mounting cylinder 5 ... Inner cylinder 6 ... Key 7 ... ··· Recess 8 ··· Protective net mounting hole 9 ···· Intake port 10 ···· Outer cylinder 11 ··· Stepped circumference 12 ··· Protective net 13 ··· Spinner 14 ···・ Bolt hole 15 ・ ・ Bolt 16 ・ ・ ・ ・ Concave circumference 17 ・ ・ ・ ・ Protection net mounting groove 18 ・ ・ ・ ・ Concave groove 19 ・ ・ ・ ・ Bolt hole 20 ・ ・ ・ ・ Screw hole 21 ・ ・ ・・ Screw bolt through hole 22 ・ ・ ・ ・ Small wheel 23 ・ ・ ・ ・ Screw 24 ・ ・ ・ ・ Screw bolt 25 ・ ・ ・ ・ Female screw 26 ・ ・ ・ ・ Ventilation plate 27 ・ ・ ・ ・ Blade 28 ・ ・ ・・ Ring 29 ・ ・ ・ ・ Inlet guide wing 30 ・ ・ ・ ・ Hot air ring 31 ・ ・ ・ ・ Hot air tube 32 ・ ・ ・ ・ Nose dome 33 ··· Outlet 34 ··· Recess 35 ···· Intermediate ring 36 ··· Hot air cylinder 37 ··· Wire mesh 38 ··· Hot air film 39 ··· Hot air blowing hole 40・ Ventilation hole 41 ・ ・ ・ ・ Hot air concentration tube 42 ・ ・ ・ ・ Wave 43 ・ ・ ・ ・ Hub 44 ・ ・ ・ ・ Round head 45 ・ ・ ・ ・ Dent 46 ・ ・ ・ ・ Suriwari 47 ・ ・ ・ ・ Outer circumference hot air ring 48 ··· Partition plate 49 ··· Hot air concentration tube 50 ··· Collective plate 51 ··· Protective hot air tube 52 ··· Protective hot air tube group

Claims (4)

[Claims] A protection net formed of a spring wire between a fan and a spinner of a jet engine.
Are installed radially in the radial direction or the protective net 12
A bird strike prevention device for an aircraft, wherein a concentric ventilation plate 26, a ring 28, or a wire mesh is attached to the aircraft. 2. A hot air ring 30 is mounted in the air inlet 9, and a plurality of hot air cylinders 36 having a streamlined or wing-shaped cross section are radially or vertically formed between the hot air ring 30 and the intermediate ring 35 in the radial direction. And a concentric ventilation plate 26 or ring 2 on the front surface of the hot air cylinder 36 or the entrance guide blade 29.
8. A bird strike prevention device for an aircraft according to claim 1, wherein a wire mesh is attached. 3. A hot air ring 30 or an outer peripheral hot air ring 47.
A hot air film 38 having an intermediate space between the hot air concentration tube 41 and the hot air concentration tube 41 is attached to the hot air film 38, and countless ventilation holes 40 are attached to the hot air film 38. 3. The apparatus according to claim 1, wherein said apparatus is mounted on an outer periphery of an entrance. 4. An outer peripheral hot air ring 47 or a hot air ring 30.
A plurality of small-diameter hot-air concentrating pipes 49 are sequentially arranged on the front or rear side of the unit, and a minimum-diameter collecting plate 50 is arranged at the foremost end, and a protective hot-air tube 51 having a smaller diameter than the hot-air concentrating pipe 49 is collected between each. At a predetermined interval in the direction of 50, it is mounted in a spherical shape or a conical or inverted conical shape.
4. An airplane bird's-eye device according to claim 1, wherein the air-conditioner is fitted over the outer periphery of the inlet of the air inlet or mounted inside the air inlet.
Strike prevention device.