JP2000006895A - Expansion skid mounted helicopter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely adjust the spacing between the lower end of an airframe and the ground by mounting expansion skids, each of which is provided with an expanding and contracting means capable of expanding and contracting the length of a cross tube. SOLUTION: The expansion skid 1 is provided at the lower end of a helicopter to support the helicopter on the ground during takeoff, landing, or parking of the helicopter. In this case, expanding and contracting means which are capable of separately expanding and contracting the lengths of cross tubes 2 and freely changing the spacing between the ground and the lower end of the helicopter, and longitudinal and traverse attitude angles of the helicopter, are provided at the cross tubes 2 which are hanged down from the lower end parts in front and rear, and on right and left of the helicopter, and at the lower ends of which skid tubes 3 arranged parallel to the direction of the airframe axis are locked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a helicopter separation,
To support the helicopter on the ground when landing or parked,
The present invention relates to a skid-mounted helicopter having a skid provided at a lower end of a fuselage, and more particularly to a skid-mounted helicopter equipped with a telescopic skid capable of freely adjusting the distance between the lower end of the fuselage and the ground.

[0002]

2. Description of the Related Art A helicopter that flies in the air can rise in the air by utilizing the lift generated by the rotation of a rotor provided above the fuselage, and can float at a certain position in the air.
Further, a propulsion force can be generated by using the lift force to fly to a predetermined position. In addition, helicopters use a lift generated on a lifting surface that moves at high speed in the atmosphere like a fixed-wing aircraft, and do not levitate, but use the lift generated by a rotating rotor provided above the fuselage. Unlike a fixed wing aircraft that requires a long runway for separation and landing, the airframe of the aircraft is required to generate lift for levitation on the lifting surface. It is possible to take off and land without gliding on the ground, and since it is not necessary to glide on the ground, there is an advantage that it can take off and land even in a narrow section on the ground.

[0003] As described above, the helicopter does not need to glide on the ground for takeoff and landing, and therefore does not require a large landing gear such as a fixed wing aircraft. A skid made of steel pipes that can easily hold and support the attitude of the aircraft during take-off, landing, or parking while mitigating the impact at the time of ground contact when landing, or the impact at the time of ground contact At the lower end of the fuselage, a simple structure of landing gear is provided that supports the fuselage during release, landing or parking, and provides wheels that can be moved and moved to the parking area at the bottom of the fuselage. It is provided.

FIG. 5 is a view showing the entire helicopter 01 in which a conventional skid 04 is mounted as a landing device in the above-mentioned helicopter. A skid 04 provided at the lower end of the fuselage 03, in which a cabin 02 provided with a control device of the helicopter 01 in the front, has a shape shown in FIG. 5A, a cross tube 06 hanging down from the top, which is fixed substantially perpendicularly to the direction of the body 03 axis, and a shape shown in FIG. 5A which is a side view. And a skid tube 07 fixed to the lower end of the cross tube 06.

[0005] Such a skid tube 04 is made of a steel pipe capable of reducing the weight ratio to the strength of both the cross tube 06 and the skid tube 07.
Moreover, since the helicopter 01 is formed of the above-described shape and material, the helicopter 01 may land at a constant descent speed, or may land at a constant ground speed. , Descent speed, and ground speed are within the allowable limits, the impact generated on the helicopter 01 at the time of landing can be sufficiently mitigated by the bending deformation generated on the skid 04. With the rigidity of the helicopter 01, the helicopter 01 is provided with a stability that allows the helicopter 01 to be maintained at a predetermined posture, that is, a posture angle at which the helicopter 01 does not overturn even on a predetermined slope.

[0006] In the figure, reference numeral 05 denotes a dynamic vibration absorber which is usually provided in a cabin 02 in order to suppress the vibration of the helicopter 01 which generates a large vibration as compared with the fixed wing aircraft.

[0007] Such a skid 04 shown in FIG. 5 is mounted as a conventional helicopter 01 landing gear.
Has a structure fixed at a height of 50 to 60 cm. For this reason, when it is necessary to fly for reporting purposes, equipment such as a camera
When mounted at the lower end of the vehicle, or when transporting an externally mounted object that cannot be accommodated in the cabin 02 by attaching it to the lower end of the aircraft 03, the tall high skid must be replaced. Therefore, there is a problem that the work is required, and during the work, the flight cannot be performed and the driving efficiency is deteriorated.

Further, the skid 04 is formed so as to support the helicopter 01 in a predetermined posture on a substantially flat ground, and defines the helicopter 01 when it is necessary to land the helicopter 01 on a slope. There is also a disadvantage that the helicopter 01 that has landed cannot be landed on a slope where the attitude angle is greater than the attitude angle determined by the overturning characteristic of the aircraft 03, that is, the inclination angle of the land where the landing is performed is restricted. .

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the problem of a helicopter for mounting a skid which employs the above-mentioned conventional skid as a landing gear. The height of the skid can be expanded and contracted, and even when equipment such as a camera or bulky cargo that cannot be accommodated in the cabin is attached to the lower end of the fuselage, the skid can be extended to the high skid that can increase the distance between the ground and the lower end of the fuselage. Of a helicopter equipped with a telescopic skid that allows the helicopter to land on a sloping land without the need for replacement, and makes the helicopter incline in reverse to the sloping angle of the sloping land by expanding and contracting the skid to ease the restriction on the sloping angle of the sloping land. As an issue.

[0010]

For this reason, the telescopic skid-mounted helicopter of the present invention has the following means.

When the helicopter is released, landed or parked,
In order to support the helicopter on the ground, it constitutes a skid provided at the lower end of the helicopter, and a skid tube which is vertically suspended from the front, rear, left and right lower ends of the helicopter and fixed to the lower end in parallel with the body axis direction is fixed. The length of the cross tube can be expanded and contracted to the cross tube which forms the distance between the ground and the lower end of the helicopter, and the distance between the ground and the lower end of the helicopter, or the front, rear, left and right attitude angles can be freely adjusted. An elastic means that can be varied is provided.

Preferably, the expansion and contraction means is provided at an intermediate portion of a cross tube vertically provided between the ground and the lower end of the helicopter. Is preferably changed by hydraulic pressure. Further, it is preferable that the length of the cross tube be extended and contracted by about 30 cm, and that a stopper be provided which can extend and contract the length of the cross tube to maintain the set length. Is preferable.

According to the helicopter equipped with the telescopic skid of the present invention, the top is fixed to the lower end of the helicopter in the front-rear position of the center of gravity of the helicopter at right angles to the body axis direction, and is slightly inclined to both sides to be hung down. The distance between the ground and the lower end of the helicopter can be increased from about 60 cm to about 90 cm by simultaneously expanding and contracting the expansion and contraction means interposed in each of the cross tubes. The mounting space at the lower end of the vehicle can be sufficiently ensured, and it is not necessary to replace the skid with a high skid having a larger height for mounting them.

Further, by simultaneously retracting the expansion and contraction means, the distance between the ground and the lower end of the helicopter can be reduced from about 60 cm to about 30 cm, and the loading of the helicopter with the load including the occupant into the helicopter becomes easy. .

Further, when the helicopter lands on an inclined ground by expanding and contracting only the expansion and contraction means interposed in a specific cross tube, for example, only the expansion and contraction means interposed in a cross tube suspended from one side of the helicopter, To the side opposite to the angle of inclination of the sloped land, so that it can be installed horizontally on the sloped land, eliminating the possibility of overturning on slopes with an attitude angle greater than the attitude angle determined from the overturning characteristics of the helicopter The helicopter can now land.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a telescopic skid-mounted helicopter according to the present invention will be described below with reference to the drawings.
FIG. 1 is a partial view showing a left half of a first embodiment of a skid portion of a telescopic skid-mounted helicopter according to the present invention, FIG. 2 is a diagram showing details of a portion A shown in FIG. 1, and FIG. FIG. 4 is a front view showing a case where a camera is mounted on the lower end, and FIG. 4 is a front view showing a case where an externally mounted object is mounted on the lower end of the helicopter.

As shown in FIG. 5A, helicopter 0
The center of gravity of the cross tube 2 is disposed at the front and rear of the center of gravity 10 and at the lower end of the fuselage 03 in a direction substantially perpendicular to the direction of the fuselage axis 03. The drooping drooping towards
As shown in FIG. 1, an actuator 4
The skid tube 3 constituting the telescopic skid 1 is fixed to the lower end of the cross tube 2 together with the cross tube 2.

As shown in FIG. 2, rods 5 and 6 having threads 7 protrude from both ends of the actuator 4 interposed in the cross tube 2. The actuator 4 is interposed in the hanging portion of the cross tube 2 by being screwed into a thread groove provided in a cut portion of the hanging portion, which is made to hang from the side of the cross tube 2.

As shown in FIG. 5, the telescopic skid 1 having the actuator 4 interposed therein is provided with a helicopter 0.
It is disposed at each of two lower ends in front of and behind the center of gravity 10 of one, and supports the airframe 03 at a predetermined interval from the ground. Normal helicopter 0
1, the distance between the lower end of the fuselage 03 and the ground is set to be approximately 60 cm. Therefore, even in the telescopic skid 1 according to the present embodiment, when the actuator 4 is not expanded or contracted, Is about tall enough to form a gap of about 60 cm between the lower end and the ground.

However, in the telescopic skid 1 provided in the telescopic skid mounting helicopter of the present embodiment, the actuator 4 interposed in the cross tube 2 can be simultaneously expanded and contracted by hydraulically driving the actuator. By fixing the amount of expansion and contraction by a stopper pin (not shown), the distance between the lower end of the body 03 and the ground can be changed and held.

Therefore, for video shooting from the sky,
As shown in FIG. 3, in a helicopter 01 used for news media where the video camera 8 may be attached to the lower side of the fuselage 03, conventionally, a helicopter from the ground required for attaching the video camera 8 to the lower surface of the fuselage 03 is used. The helicopter 0 is replaced with a high skid having a large height in order to secure the clearance. However, the helicopter 0 is provided with the telescopic skid 1 mounted on the telescopic skid device helicopter according to the present embodiment.
3, the actuator 4 is simultaneously extended and contracted so that the distance between the ground and the lower end of the body 03 is normally 60 without replacing the extensible skid 1 with a high skid.
The height of the video camera 8 can be increased from about 10 cm to about 90 cm.
Below.

This means that not only the helicopter 01 used for the news media but also the externally mounted container 9 or the like which is fixedly transported is mounted below the fuselage 03 as shown in FIG. The same applies to the helicopter 01 described above, in which it is not necessary to replace a normal tall telescopic skid with a high skid having a large height 1, and equipment such as a video camera 8 or a container 9 for reporting purposes. A space for attaching the lower end of the helicopter can be ensured, and it becomes unnecessary to replace them with a high skid conventionally performed for attaching them.

It is to be noted that the container 9 attached to the lower side of the body 03 can of course carry luggage,
Injured and sick persons who have difficulty moving can be accommodated and transported. For example, it is easy to rescue distressed climbers, etc. The transfer efficiency can be improved by being transported.

Also, the actuators 4 can be simultaneously retracted, whereby the height of the telescopic skid 1 can be reduced, and the distance between the ground and the lower end of the helicopter can be reduced from about 60 cm to about 30 cm. It is also possible to facilitate the loading of the occupant on the helicopter 01 or the loading of the load mounted on the floor of the cabin 02.

As described above, the height of the telescopic skid 1 is changed by the operation of the actuator 4, so that the use of the telescopic skid-mounted helicopter of the present embodiment can be expanded. Further, the skid 0 which is performed according to the height of the cargo mounted on the lower end of the
By reducing the cost and time by replacing 4, it is possible to make the helicopter easier to use and more flexible.

Further, when a case where the helicopter equipped with the telescopic skid is landed on an inclined ground occurs, the actuator 4 mounted on a specific cross tube 2, for example, the cross tube 2 suspended from one side of the body 3 is mounted. By expanding and contracting only the actuator 4 that has been
By inclining the aircraft 3 toward the side opposite to the inclination angle of the slope, the possibility of capsizing can be eliminated and the aircraft 03 can land safely even on a slope with an attitude angle determined by the helicopter's overturning characteristics. Become like

[0027]

As described above, the telescopic skid-mounted helicopter of the present invention constitutes a skid provided at the lower end of the helicopter for supporting the helicopter on the ground when the helicopter is separated, landed or parked, The length of the cross tube can be independently extended and contracted to the cross tube that is vertically attached downward from the lower end of the helicopter, from the lower left and right sides, and fixed to the skid tube arranged at the lower end in parallel with the body axis direction, An expansion / contraction means is provided which can freely change the distance between the ground and the lower end of the helicopter, and the front, rear, left and right attitude angles of the helicopter.

With this, the length of the cross tube that determines the height of the skid, which is adopted as a conventional helicopter landing gear, can be extended and contracted by the actuator, so that the lower end of the fuselage can be equipped with equipment such as a camera or in a cabin. Even when installing bulky cargo that cannot be accommodated, the distance between the ground and the lower end of the aircraft can be increased without replacing it with a high skid, and a space according to the volume of the load can be secured, Conversely, the height from the ground to the floor surface is reduced, so that it is easy to get in and out of the machine or to mount a load.

Further, when the aircraft is to land on a slope, the height of the specific cross tube is changed by the expansion and contraction of the actuator, so that the body is inclined in the opposite direction to the slope of the slope, and the slope of the slope to be landed is changed. Restrictions can be relaxed, and away from slopes where there is a risk of overturning,
It can be an aircraft that can land.

[Brief description of the drawings]

FIG. 1 is a partial view showing a left half of a telescopic skid used in a first embodiment of a telescopic skid-mounted helicopter according to the present invention;

FIG. 2 is a side view showing details of an actuator section of an A section shown in FIG. 1;

FIG. 3 is a front view showing a case where a camera is mounted on the lower end of the helicopter for reporting purposes in the telescopic skid-mounted helicopter shown in FIG. 1;

FIG. 4 is a front view showing a case where an externally mounted object is mounted on the lower end of the fuselage in the telescopic skid-mounted helicopter shown in FIG. 1;

FIG. 5 is a view showing a helicopter to which a conventional skid is mounted as a helicopter landing gear; FIG.
FIG. 5B is a side view showing the whole, and FIG. 5B is a front view taken along the line AA shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telescopic skid 2 Cross tube 3 Skid tube 4 Actuator 5 Rod 6 Rod 7 Screw 8 Video camera 9 Outboard cargo 10 Center of gravity position 01 Helicopter 02 Cabin 03 Body 04 Skid 05 Dynamic vibration absorber 06 Cross tube 07 Skid tube 010 Center of gravity position

Claims (1)

[Claims] 1. A skid-mounted helicopter provided with a skid at a lower end of the helicopter to support the helicopter on the ground when the helicopter is separated, landed, or parked, wherein the helicopter droops downward from the front, rear, left and right lower ends of the helicopter. A telescopic skid provided with telescopic means capable of expanding and contracting the length of the cross tube is attached to a cross tube which is provided so as to be fixed to a skid tube disposed at the lower end in parallel with the body axis direction. A helicopter equipped with a telescopic skid.