CN205102998U - Test device is hit to bird - Google Patents
Test device is hit to bird Download PDFInfo
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- CN205102998U CN205102998U CN201520860627.4U CN201520860627U CN205102998U CN 205102998 U CN205102998 U CN 205102998U CN 201520860627 U CN201520860627 U CN 201520860627U CN 205102998 U CN205102998 U CN 205102998U
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Abstract
The utility model relates to a test device is hit to bird relates to the bird and hits experimental field, and main aim at improves the emission velocity of bird bullet through this test device is hit to bird. The main technical scheme who adopts does: test device is hit to bird, including having the shell case arresting gear that pressure release mechanism, the inside of holding the gas outlet have the barrel of bird bullet installation department and has mounting flange, the barrel has the first end and the second end of the back of the body mutually, and first end is connected with the gas outlet end, and the second end is connected with mounting flange, test device is hit to bird still includes a sealing device and the 2nd sealing device, a sealing device includes a sealing film, and a sealing film presss from both sides and establishes between first end and gas outlet end, the 2nd sealing device includes the 2nd sealing film, and the 2nd sealing film presss from both sides and establishes between second end and mounting flange, the part of barrel between first end and second end is equipped with the decompression mouth, and the decompression mouth is used for being connected with pressure relief device to to the barrel inner pressure relief.
Description
Technical field
The utility model relates to bird impact tests technical field, particularly relates to a kind of bird impact tests device.
Background technology
Bird hits the train colliding referring generally to flying bird and advance with aircraft or high speed aloft, thus causes the accident, and produces great potential safety hazard to the train of aviation aircraft and high-speed cruising.Along with the develop rapidly of China's Aero-Space cause and railway traffic cause, more and more higher to the requirement of aircraft, motorcycle safety performance.Anti-bird impact tests is the important method evaluating aircraft and high ferro train safe performance.
It is one of important parameter will considered in Flight Vehicle Design process that anti-bird hits performance.The mode of usual employing pressurized air acceleration bird bullet is simulated bird strike aircraft and is hit performance to the anti-bird evaluating Flight Vehicle Structure or material.Aerodynamics formula shows, the quadratic power direct proportionality of the movement velocity of air resistance and object.When body reaches certain speed, no matter be at increase driving pressure, or extending barrel length increase the acceleration time, does not all have obvious effect to raising missile velocity.Because bird bullet is subject to the friction force of air resistance and gun barrel barrel in gun barrel in accelerator, conventional bird impact tests system top speed can only reach 650km/h (as Fig. 1), cannot arrive higher speed.And along with the development of science and technology, the speed of aircraft has exceeded the velocity of sound, some privileged sites has needed to carry out connecing near sonic bird impact tests (as helicopter blade).Current bird impact tests system cannot meet the bird impact tests higher than 650km/h.
Utility model content
In view of this, the utility model provides a kind of bird impact tests device, and fundamental purpose is the emission rate being improved bird bullet by this bird impact tests device.
For achieving the above object, the utility model mainly provides following technical scheme:
On the one hand, embodiment of the present utility model provides a kind of bird impact tests device, comprise pressure release mechanism, the inside with gas outlet end there is the gun barrel of bird bullet installation portion and there is the shell case clamping device of mounting flange, described gun barrel has opposing first end and the second end, described first end is connected with described gas outlet end, and described second end is connected with described mounting flange; Described bird impact tests device also comprises the first packoff and the second packoff;
Described first packoff comprises the first sealing film, and described first sealing film is folded between described first end and described gas outlet end;
Described second packoff comprises the second sealing film, and described second sealing film is folded between described second end and described mounting flange;
The part of described gun barrel between described first end and described second end is provided with pressure-reduction outlet, and described pressure-reduction outlet is used for being connected with reliever, with to described gun barrel inner pressure relief.
The purpose of this utility model and solve its technical matters and also can be applied to the following technical measures to achieve further.
Further, aforesaid bird impact tests device, wherein,
Described first packoff comprises the first O-ring seal and the second O-ring seal, and described first O-ring seal is folded between described first sealing film and described gas outlet end, and described second O-ring seal is folded between described first sealing film and described first end.
Further, aforesaid bird impact tests device, also comprises connecting pipe;
Described gas outlet end is connected with described first end by described connecting pipe;
Described first sealing film is folded between described connecting pipe and described first end.
Further, aforesaid bird impact tests device, wherein,
Described first packoff comprises the 3rd O-ring seal and the 4th O-ring seal, and described 3rd O-ring seal is folded between described first sealing film and described connecting pipe, and described 4th O-ring seal is folded between described first sealing film and described first end.
Further, aforesaid bird impact tests device, wherein,
Described second packoff also comprises the 5th O-ring seal and the 6th O-ring seal, and described 5th O-ring seal is folded between described second sealing film and described mounting flange, and described 6th O-ring seal is folded between described second sealing film and described second end.
Further, aforesaid bird impact tests device, wherein,
Described first sealing film and described second sealing film are any one in eva film, polyvinyl chloride film, PET film.
Further, aforesaid bird impact tests device, wherein,
Described reliever comprises vacuum pump, and the air entry end of described vacuum pump is connected with the pressure-reduction outlet end of described gun barrel.
Further, aforesaid bird impact tests device, also comprises energy storage devices, and described energy storage devices comprises:
Air compressor;
Gas-holder, comprises air intake opening and gas outlet, and the air intake opening end of described gas-holder is connected with the output terminal of described air compressor, and the gas outlet end of described gas-holder is connected with the inflation solenoid valve of described pressure release mechanism.
Further, aforesaid bird impact tests device, also comprises velocity measuring device, and described velocity measuring device is arranged on the side of described shell case clamping device, for measuring the speed of the bird bullet after shelling;
Described bird impact tests device also comprises paravent, and described paravent is arranged between described shell case clamping device and described velocity measuring device, and what the bird bullet after described paravent is provided with confession shelling passed keeps away a hole.
On the other hand, embodiment of the present utility model also provides a kind of bird impact tests method, for above-mentioned bird impact tests device described in any one with the use of, its step comprises:
Bird bullet is loaded the bird bullet installation portion of gun barrel inside;
By the pressure-reduction outlet on gun barrel to gun barrel inner pressure relief operation, until gun barrel inside reaches setting vacuum tightness;
The pressurized air that the release of controlled pressure releasing mechanism is inner, pressurized air wears out the first sealing film, and promotes bird bullet and accelerate in gun barrel, and the second sealing film worn out by the bird bullet after acceleration;
The shell case wearing out the bird bullet after the second sealing film is braked by shell case clamping device, and the body of bird bullet flies out.
By technique scheme, the utility model bird impact tests device at least has following beneficial effect:
In the technical scheme that the utility model provides, because be folded with the first sealing film between the first end and gas outlet end of gun barrel, the second sealing film is folded with between second end and the mounting flange of shell case clamping device of gun barrel, this first sealing film and the second sealing film can seal the two ends of gun barrel, gun barrel inside is made to be in sealing state, again because gun barrel part is between the ends provided with pressure-reduction outlet, this pressure-reduction outlet can be connected with to gun barrel inner pressure relief with reliever, gun barrel inside is made to be in vacuum state, thus bird bullet when flying in gun barrel, air resistance suffered by it can reduce greatly, be even zero, accordingly, the flying speed of bird bullet can improve greatly, and then the lower problem that can not meet high-speed impact test of the flying speed solving bird bullet in prior art.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of instructions, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structure diagram of a kind of bird impact tests device that embodiment one of the present utility model provides;
Fig. 2 is the cut-away section structural representation that a kind of gun barrel of bird impact tests device that the first example of embodiment one of the present utility model provides is connected with the gas outlet end of pressure release mechanism;
Fig. 3 is the cut-away section structural representation that the gun barrel of a kind of bird impact tests device that the first example of embodiment one of the present utility model provides is connected with the mounting flange of shell case clamping device;
Fig. 4 is the cut-away section structural representation that a kind of gun barrel of bird impact tests device that the second example of embodiment one of the present utility model provides is connected with the gas outlet end of pressure release mechanism;
Fig. 5 is the cut-away section structural representation that the gun barrel of a kind of bird impact tests device that the 3rd example of embodiment one of the present utility model provides is connected with the mounting flange of shell case clamping device;
Fig. 6 is the cross-sectional view of the pressure release mechanism of a kind of bird impact tests device that embodiment one of the present utility model provides;
Fig. 7 is the cut-away section structural representation that a kind of gun barrel of bird impact tests device that an example of embodiment two of the present utility model provides is connected with the gas outlet end of pressure release mechanism;
Fig. 8 is the cut-away section structural representation that a kind of gun barrel of bird impact tests device that another example of embodiment two of the present utility model provides is connected with the gas outlet end of pressure release mechanism;
Fig. 9 is the structural representation of a kind of bird impact tests method that embodiment three of the present utility model provides.
Embodiment
For further setting forth the utility model for the technological means reaching predetermined utility model object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the embodiment of the utility model application, structure, feature and effect thereof, be described in detail as follows.In the following description, the not necessarily same embodiment that different " embodiment " or " embodiment " refers to.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
Embodiment one
As shown in Figure 1, a kind of bird impact tests device that embodiment of the present utility model proposes, comprises pressure release mechanism 1, the inside with gas outlet end 11 and has the gun barrel 2 of bird bullet installation portion and have the shell case clamping device 3 of mounting flange 31.Gun barrel 2 has opposing first end 21 and the second end 22.The first end 21 of gun barrel 2 is connected with the gas outlet end 11 of pressure release mechanism 1, and to make, gas outlet end 11 is inner to be communicated with gun barrel 2 inside, and it is inner that the pressurized air in pressure release mechanism 1 can enter gun barrel 2 via gas outlet end 11.Second end 22 of gun barrel 2 is connected with the mounting flange 31 of shell case clamping device 3, and bird bullet enters in shell case clamping device 3 via the second end 22 of gun barrel 2, and the shell case of bird bullet is braked by shell case clamping device 3, and the body of bird bullet continues high-speed flight.
Implement in first example of at the utility model, above-mentioned bird impact tests device also comprises first packoff 4 with the first sealing film 41 and second packoff 5 with the second sealing film 51.As shown in Figure 2, the first sealing film 41 is folded between the first end 21 of gun barrel 2 and gas outlet end 11, to seal the first end 21 of gun barrel 2.As shown in Figure 3, the second sealing film 51 is folded between the second end 22 of gun barrel 2 and mounting flange 31, to seal the second end 22 of gun barrel 2.As shown in Figure 1, the part of gun barrel 2 between first end 21 and the second end 22 is also provided with pressure-reduction outlet (not indicating in figure), and this pressure-reduction outlet can be connected with reliever 6, with to gun barrel 2 inner pressure relief.This reliever 6 can be the reliever 6 of bird impact tests device self, also can be outside reliever 6.
In the technical scheme that above-mentioned bird impact tests device embodiment provides, first sealing film 41 and the second sealing film 51 can seal the two ends of gun barrel 2, gun barrel 2 inside is made to be in sealing state, again because gun barrel 2 part is between the ends provided with pressure-reduction outlet, this pressure-reduction outlet can be connected with reliever 6 with to gun barrel 2 inner pressure relief, makes gun barrel 2 inside be in vacuum state, thus when bird bullet flies in gun barrel 2, air resistance suffered by it can reduce greatly, is even zero.Although the resistance of the first sealing film 41 can be subject to when wearing out the first sealing film 41 and entering gun barrel 2 inside from the pressurized air of gas outlet end 11 release, and bird bullet also can be subject to the resistance of the second sealing film 51 when flying out from the second end 22 of gun barrel 2, due to the thinner thickness of the first sealing film 41 and the second sealing film 51, tear and be easier to, first sealing film 41 and the second sealing film 51 will be far smaller than the impact of air resistance on bird bullet in high-speed flight to the impact of the flying speed of bird bullet, under identical condition, relative to prior art, the flying speed of bird bullet is still greatly enhanced, reach more than 650km/h.
Here it should be noted that: in order to reduce the first sealing film 41 and the second sealing film 51 further to the impact of bird bullet flying speed, operating personnel can by improving the pressure of pressure release mechanism 1 compressed air, and the length increasing gun tube reduces the first sealing film 41 and the second sealing film 51 to the impact of bird bullet flying speed, to improve the flying speed of bird bullet further with the acceleration time extending bird bullet.
In order to improve gas outlet end 11 and gun barrel 2 first end 21 between sealing effectiveness, second example of the utility model embodiment one also provides following embodiment: as shown in Figure 4, and aforesaid first packoff 4 also comprises the first O-ring seal 42 and the second O-ring seal 43.First O-ring seal 42 is folded between the first sealing film 41 and gas outlet end 11, and the second O-ring seal 43 is folded between the first sealing film 41 and first end 21, in other words: the first sealing film 41 is folded between the first O-ring seal 42 and the second O-ring seal 43.
Here it should be noted that: as shown in Figure 4, Flange joint can be passed through between aforesaid gas outlet end 11 and the first end 21 of gun barrel 2, the internal diameter of the first O-ring seal 42 and the second O-ring seal 43 is all more than or equal to the internal diameter of gun barrel 2, to reach the sealing to gun barrel 2, do not affect again pressurized air that gas outlet end 11 discharges and wear out the first sealing film 41 to enter gun barrel 2 inner.First O-ring seal 42 and the second O-ring seal 43 can be equipped with bolt through-hole, bolt through-hole on flange on screw bolt passes gas outlet end 11, the first O-ring seal 42, the bolt through-hole on the second O-ring seal 43 and the flange on first end 21, be clipped between two flanges tightly by the first O-ring seal 42, first sealing film 41 and the second O-ring seal 43.
In order to improve the sealing effectiveness between the second end 22 of gun barrel 2 and the mounting flange 31 of shell case clamping device 3,3rd example of the utility model embodiment one also provides following embodiment: as shown in Figure 5, aforesaid second packoff 5 also comprises the 5th O-ring seal 52 and the 6th O-ring seal 53,5th O-ring seal 52 is folded between the second sealing film 51 and mounting flange 31,6th O-ring seal 53 is folded between the second sealing film 51 and the second end 22, in other words: the second sealing film 51 is folded between the 5th O-ring seal 52 and the 6th O-ring seal 53.Wherein, the structure of the second packoff 5 can adopt the structure of above-mentioned first packoff 4, specifically see the associated description of above the first packoff 4, can not repeat them here.
Here it should be noted that: as shown in Figure 5, the second end 22 of aforementioned gun barrel 2 also can be provided with the flange suitable with the mounting flange 31 of shell case clamping device 3, to make the second end 22 of gun barrel 2 and to flick clamping device by Flange joint, operates more convenient.
Specifically when implementing the technical scheme of aforementioned bird impact tests device, aforesaid first sealing film 41 and the second sealing film 51 can be any one in eva film, polyvinyl chloride film, PET film.Preferably, the first sealing film 41 and the second sealing film 51 are PET film.PET film is the comprehensive film of a kind of Performance comparision.Its transparency is good, glossy; There is good impermeability and fragrance protectiveness; Moisture resistance is medium, and rate of perviousness declines at low temperatures.
Aforesaid reliever 6 can comprise vacuum pump (not indicating in figure), and the air entry end of vacuum pump is connected with the pressure-reduction outlet end of gun barrel 2, is communicated with gun barrel 2 inside to make air entry.When opening vacuum pump, vacuum pump can be vacuumized gun barrel 2 inside by air entry, and the pressure of gun barrel 2 inside is reduced.After vacuum pump vacuumizes gun barrel 2 inside, in order to keep this vacuum state of gun barrel 2, can install a valve at air entry end, the air entry end of vacuum pump is connected with the pressure-reduction outlet end of gun barrel 2 by this valve.When the vacuum tightness of gun barrel 2 inside reaches setting value, valve-off, to maintain the vacuum tightness of gun barrel 2 internal stability.
Specifically when implementing the technical scheme of aforementioned bird impact tests device, aforesaid bird impact tests device also comprises energy storage devices (not indicating in figure).This energy storage devices comprises air compressor (not indicating in figure) and gas-holder (not indicating in figure).Gas-holder comprises air intake opening and gas outlet, and the air intake opening end of gas-holder is connected with the output terminal of air compressor, and the gas outlet end of gas-holder is connected with the inflation solenoid valve 12 of pressure release mechanism 1.Wherein, air compressor is inflated to gas-holder by the air intake opening of gas-holder.Gas-holder inflates to the cylinder 14 of pressure release mechanism 1 by inflation solenoid valve 12.Wherein, Fig. 6 shows a kind of cross-sectional view of pressure release mechanism.As shown in Figure 6, pressure release mechanism 1 comprises inflation solenoid valve 12, pressure-releasing electromagnetic valve 13, sealing cylinder 14, piston 15 and gas outlet end 11.Gas outlet end 11 is arranged on one end of cylinder 14, and is communicated with the inside of cylinder 14.Piston 15 is arranged on the inside of cylinder 14.When by inflating solenoid valve 12 to cylinder 14 inner inflatable, pressurized air promotes piston 15 and blocks gas outlet end 11, when needing to discharge the pressurized air in cylinder 14, open pressure-releasing electromagnetic valve 13, piston 15 back moves, occur gap between piston 15 and gas outlet end 11, the pressurized air in cylinder 14 enters gas outlet end 11 via this gap, and discharges from gas outlet end 11.
Here it should be noted that: the concrete structure of aforementioned pressure releasing mechanism 1 is common technology of the prior art, can choose in the prior art as required, not repeat them here.
In order to ensure the security performance of gas-holder, gas-holder can also be provided with gas bleed valve (not indicating in figure) and safety valve (not indicating in figure).When pressure release mechanism 1 breaks down, can by gas bleed valve by the pressurized air release in gas-holder.The object of safety valve is the use safety ensureing gas-holder, and when in gas-holder, pressure exceedes setting value, safety valve opens venting automatically.
Specifically when implementing the technical scheme of aforementioned bird impact tests device, in order to measure the speed of the bird bullet after shelling, as shown in Figure 1, aforesaid bird impact tests device can also comprise velocity measuring device 8 and paravent 9.Velocity measuring device 8 is arranged on the side of shell case clamping device 3, for measuring the speed of the bird bullet after shelling.Paravent 9 is arranged between shell case clamping device 3 and velocity measuring device 8, and what the bird bullet after paravent 9 is provided with confession shelling passed keeps away a hole 91.This paravent 9 can stop the acceleration air of blowout in gun barrel 2, in order to avoid air continues to blow on velocity measuring device 8, affects the precision of velocity measuring device 8.An above-mentioned hole 91 of keeping away can circular hole, to ensure the continuation flight not affecting bird bullet.
Here it should be noted that: above-mentioned velocity measuring device 8 can comprise signal flip flop equipment (not indicating in figure) and signal analysis device (not indicating in figure).Signal flip flop equipment adopts laser signal, namely adopts the laser signal of two groups of constant spacings, for catching the signal that bird bullet flies over.Signal Analysis System is for calculating the flying speed of bird bullet.Wherein, the concrete structure of velocity measuring device 8 is common technology of the prior art, can choose in the prior art as required, not repeat them here.
Embodiment two
The concrete structure of the present embodiment two bird impact tests device is substantially identical with the structure of the device in embodiment one, difference is: between the first end 21 that the first sealing film 41 of embodiment one bird impact tests device is directly folded in gas outlet end 11 and gun barrel 2 (as shown in Figure 2), and the bird impact tests device in the present embodiment two, as shown in Figure 7, also comprise connecting pipe 7, gas outlet end 11 is connected with the first end 21 of gun barrel 2 by this connecting pipe 7, and aforesaid first sealing film 41 is folded between the first end 21 of connecting pipe 7 and gun barrel 2.In the present embodiment two, connecting pipe 7 has buffer action, can reduce pressure release mechanism 1 when discharging pressurized air because the resistance of the first sealing film 41 is to the reacting force of pressure release mechanism 1, to improve the serviceable life of pressure release mechanism 1.
Further, as shown in Figure 8, in the present embodiment two, the first packoff 4 of bird impact tests device can comprise the 3rd O-ring seal 44 and the 4th O-ring seal 45,3rd O-ring seal 44 is folded between the first sealing film 41 and connecting pipe 7,4th O-ring seal 45 is folded between the first sealing film 41 and first end 21, to improve the sealing property of the first end 21 of gun barrel 2 further.
Here it should be noted that: as shown in Figure 8, connecting pipe 7 can pass through Flange joint with the first end 21 of gun barrel 2, the internal diameter of the 3rd O-ring seal 44 and the 4th O-ring seal 45 is all more than or equal to the internal diameter of gun barrel 2, to reach the sealing to gun barrel 2, do not affect again pressurized air that connecting pipe 7 discharges and wear out the first sealing film 41 to enter gun barrel 2 inner.3rd O-ring seal 44 and the 4th O-ring seal 45 can be equipped with bolt through-hole, bolt through-hole on flange on screw bolt passes connecting pipe 7, the 3rd O-ring seal 44, the bolt through-hole on the 4th O-ring seal 45 and the flange on first end 21, be clipped between two flanges tightly by the 3rd O-ring seal 44, first sealing film 41 and the 4th O-ring seal 45.
Embodiment three
Embodiment of the present utility model also provides a kind of bird impact tests method, for bird impact tests device with the use of.Wherein, bird impact tests device, comprise pressure release mechanism, the inside with gas outlet end and have the gun barrel of bird bullet installation portion and have the shell case clamping device of mounting flange, gun barrel has opposing first end and the second end, first end is connected with gas outlet end, and the second end is connected with mounting flange; Bird impact tests device also comprises the first packoff and the second packoff; First packoff comprises the first sealing film, and the first sealing film is folded between first end and gas outlet end; Second packoff comprises the second sealing film, and the second sealing film is folded between the second end and mounting flange; Gun barrel part is between a first end and a second end provided with pressure-reduction outlet, and pressure-reduction outlet is used for being connected with reliever, with to gun barrel inner pressure relief.
Here it should be noted that: bird impact tests device involved in the present embodiment can adopt the described bird impact tests apparatus structure in above-described embodiment one and embodiment two, concrete realization and principle of work see the corresponding content in above-described embodiment, can repeat no more herein.
Fig. 9 shows a kind of process flow diagram of bird impact tests method, and as shown in Figure 9, the step of the bird impact tests method of the present embodiment three comprises:
Step 101: bird bullet installation portion bird bullet being loaded gun barrel 2 inside;
Step 102: by the pressure-reduction outlet on gun barrel 2 to gun barrel 2 inner pressure relief operation, until gun barrel 2 inside reaches setting vacuum tightness;
Step 103: controlled pressure releasing mechanism 1 discharges inner pressurized air, and pressurized air wears out the first sealing film 41, and promote bird bullet and accelerate in gun barrel 2, the second sealing film 51 worn out by the bird bullet after acceleration;
Step 104: the shell case wearing out the bird bullet after the second sealing film 51 is braked by shell case clamping device 3, and the body of bird bullet flies out.
In first application example of the present embodiment three, adopt the packoff of Fig. 4 and Fig. 5, bird bullet weight 1.8kg, the compressed-air actuated air pressure in injection pressure releasing mechanism 1 is 0.3Mpa, vacuum pressure in gun barrel 2 is-0.09MPa, and the length of gun barrel 2 is 9 meters.The projectile flight speed recording bird bullet according to above-mentioned step is 820km/h, far away higher than 650km/h of the prior art.
In second application example of the present embodiment three, adopt the packoff of Fig. 4 and Fig. 5, bird bullet weight 1.0kg, the compressed-air actuated air pressure in injection pressure releasing mechanism 1 is 0.3Mpa, vacuum pressure in gun barrel 2 is-0.09MPa, and the length of gun barrel 2 is 9 meters.The projectile flight speed recording bird bullet according to above-mentioned step is 920km/h, far away higher than 650km/h of the prior art.
In the 3rd application example of the present embodiment three, adopt the packoff of Fig. 5 and Fig. 8, bird bullet weight 1.8kg, the compressed-air actuated air pressure in injection pressure releasing mechanism 1 is 0.4Mpa, vacuum pressure in gun barrel 2 is-0.09MPa, and the length of gun barrel 2 is 9 meters.The projectile flight speed recording bird bullet according to above-mentioned step is 1010km/h, far away higher than 650km/h of the prior art.
In the 4th application example of the present embodiment three, adopt the packoff of Fig. 5 and Fig. 8, bird bullet weight 1.0kg, the compressed-air actuated air pressure in injection pressure releasing mechanism 1 is 0.4Mpa, vacuum pressure in gun barrel 2 is-0.09MPa, and the length of gun barrel 2 is 9 meters.The projectile flight speed recording bird bullet according to above-mentioned step is 1310km/h, far away higher than 650km/h of the prior art.
According to above embodiment, bird impact tests device of the present utility model at least has following advantages:
In the technical scheme that the utility model provides, because be folded with the first sealing film 41 between the first end 21 and gas outlet end 11 of gun barrel 2, the second sealing film 51 is folded with between second end 22 and the mounting flange 31 of shell case clamping device 3 of gun barrel 2, this first sealing film 41 and the second sealing film 51 can seal the two ends of gun barrel 2, gun barrel 2 inside is made to be in sealing state, again because gun barrel 2 part is between the ends provided with pressure-reduction outlet, this pressure-reduction outlet can be connected with to gun barrel 2 inner pressure relief with reliever 6, gun barrel 2 inside is made to be in vacuum state, thus bird bullet when flying in gun barrel 2, air resistance suffered by it can reduce greatly, be even zero, accordingly, the flying speed of bird bullet can improve greatly, as can be seen from first to fourth example of embodiment three, the flying speed of the body of bird bullet can reach velocity of sound level, and then the lower problem that can not meet high-speed impact test of the flying speed solving bird bullet in prior art.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. a bird impact tests device, comprise pressure release mechanism, the inside with gas outlet end there is the gun barrel of bird bullet installation portion and there is the shell case clamping device of mounting flange, described gun barrel has opposing first end and the second end, described first end is connected with described gas outlet end, and described second end is connected with described mounting flange; It is characterized in that, described bird impact tests device also comprises the first packoff and the second packoff;
Described first packoff comprises the first sealing film, and described first sealing film is folded between described first end and described gas outlet end;
Described second packoff comprises the second sealing film, and described second sealing film is folded between described second end and described mounting flange;
The part of described gun barrel between described first end and described second end is provided with pressure-reduction outlet, and described pressure-reduction outlet is used for being connected with reliever, with to described gun barrel inner pressure relief.
2. bird impact tests device as claimed in claim 1, is characterized in that,
Described first packoff comprises the first O-ring seal and the second O-ring seal, and described first O-ring seal is folded between described first sealing film and described gas outlet end, and described second O-ring seal is folded between described first sealing film and described first end.
3. bird impact tests device as claimed in claim 1, is characterized in that, also comprise connecting pipe;
Described gas outlet end is connected with described first end by described connecting pipe;
Described first sealing film is folded between described connecting pipe and described first end.
4. bird impact tests device as claimed in claim 3, is characterized in that,
Described first packoff comprises the 3rd O-ring seal and the 4th O-ring seal, and described 3rd O-ring seal is folded between described first sealing film and described connecting pipe, and described 4th O-ring seal is folded between described first sealing film and described first end.
5. the bird impact tests device according to any one of Claims 1-4, is characterized in that,
Described second packoff also comprises the 5th O-ring seal and the 6th O-ring seal, and described 5th O-ring seal is folded between described second sealing film and described mounting flange, and described 6th O-ring seal is folded between described second sealing film and described second end.
6. the bird impact tests device according to any one of Claims 1-4, is characterized in that,
Described first sealing film and described second sealing film are any one in eva film, polyvinyl chloride film, PET film.
7. the bird impact tests device according to any one of Claims 1-4, is characterized in that,
Described reliever comprises vacuum pump, and the air entry end of described vacuum pump is connected with the pressure-reduction outlet end of described gun barrel.
8. the bird impact tests device according to any one of Claims 1-4, is characterized in that, also comprise energy storage devices, and described energy storage devices comprises:
Air compressor;
Gas-holder, comprises air intake opening end and gas outlet end, and the air intake opening end of described gas-holder is connected with the output terminal of described air compressor, and the gas outlet end of described gas-holder is connected with the inflation solenoid valve of described pressure release mechanism.
9. the bird impact tests device according to any one of Claims 1-4, is characterized in that, also comprise velocity measuring device, and described velocity measuring device is arranged on the side of described shell case clamping device, for measuring the speed of the bird bullet after shelling;
Described bird impact tests device also comprises paravent, and described paravent is arranged between described shell case clamping device and described velocity measuring device, and what the bird bullet after described paravent is provided with confession shelling passed keeps away a hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860627.4U CN205102998U (en) | 2015-10-30 | 2015-10-30 | Test device is hit to bird |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860627.4U CN205102998U (en) | 2015-10-30 | 2015-10-30 | Test device is hit to bird |
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| CN205102998U true CN205102998U (en) | 2016-03-23 |
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| CN201520860627.4U Withdrawn - After Issue CN205102998U (en) | 2015-10-30 | 2015-10-30 | Test device is hit to bird |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258900A (en) * | 2015-10-30 | 2016-01-20 | 中国建材检验认证集团股份有限公司 | Bird impact test device and method |
| CN109543252A (en) * | 2018-11-05 | 2019-03-29 | 中国航空工业集团公司西安飞机设计研究所 | A kind of security of system appraisal procedure hit based on bird |
| CN111579190A (en) * | 2020-04-27 | 2020-08-25 | 南京航空航天大学 | Horizontal ejection-impact type blade bird-cutting test device and test method |
-
2015
- 2015-10-30 CN CN201520860627.4U patent/CN205102998U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258900A (en) * | 2015-10-30 | 2016-01-20 | 中国建材检验认证集团股份有限公司 | Bird impact test device and method |
| CN105258900B (en) * | 2015-10-30 | 2018-03-13 | 中国建材检验认证集团股份有限公司 | Bird impact tests devices and methods therefor |
| CN109543252A (en) * | 2018-11-05 | 2019-03-29 | 中国航空工业集团公司西安飞机设计研究所 | A kind of security of system appraisal procedure hit based on bird |
| CN109543252B (en) * | 2018-11-05 | 2022-11-22 | 中国航空工业集团公司西安飞机设计研究所 | System safety evaluation method based on bird collision |
| CN111579190A (en) * | 2020-04-27 | 2020-08-25 | 南京航空航天大学 | Horizontal ejection-impact type blade bird-cutting test device and test method |
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