Horizontal ejection-impact type blade bird cutting test device and test method

A test device and impact-type technology, which is applied in the field of aero-engine bird impact test, can solve the problems of high cost, single type of anti-bird impact blade test method, etc., and achieve the effect of improving convenience and accuracy

Active Publication Date: 2020-08-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: the purpose of the present invention is to solve the problem of single type or high cost of the existing anti-bird strike blade test method, and provide a horizontal ejection-impact blade cutting bird test device, which adopts air cannon to launch gelatin bird bombs. The fixed blade provides kinetic energy to simulate different types of birds hitting the blade, which improves the convenience and accuracy of the test method for bird strike blades

Method used

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  • Horizontal ejection-impact type blade bird cutting test device and test method

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Embodiment Construction

[0018] see figure 1 As shown, the present invention discloses a horizontal ejection-impact blade cutting bird test device, comprising a casing 1, an air cannon 2 positioned in the casing 1, a projectile 3 fired by the air cannon 2, a slideway 4 positioned in the casing, a The impulse conversion device 5 in the slideway 4, the test blade 6 located in the slideway 4, the test bird body 7 located in the shell 1, the speedometer, the vacuum pump 8, the bird body suspension device and the shock absorber 9. The air cannon has a bullet opening 10, a muzzle 11, and a bullet holder 12 for placing projectiles 3. A bullet rest separator 13 and a noise reducer 14 are arranged before the slideway 4 and the air gun muzzle 11 , and the noise reducer 14 is located between the bullet rest separator 13 and the impulse conversion device 5 . The bullet opening 10, the muzzle 11, the bullet support separator 13, the impulse conversion device 5, the test blade 6 and the slideway 4 are coaxial. Th...

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Abstract

The invention discloses a horizontal ejection-impact type blade bird cutting test device. The device comprises an air cannon, projectiles launched by the air cannon, a slideway, an impulse conversiondevice, a test blade and a test bird body, wherein the impulse conversion device serves as an impulse conversion medium, the impulse of the shots launched by the air cannon is transferred into the test blade, and the process that the test blade impacts the test bird body is used for simulating blade bird cutting. As the projectile does not directly impact the test blade and does not need to directly hit the test blade from a gun barrel, different types of bird impact blades are simulated by impacting the test bird body with the test blade, and convenience and accuracy of the bird impact resistance blade test method are improved. The invention further provides a test method using the test device.

Description

technical field [0001] The invention relates to the technical field of aero-engine bird strike tests. Background technique [0002] A bird strike accident refers to an accident in which a flying bird collides with a high-speed moving aircraft or train in the air. Bird strike aircraft is one of the important issues that threaten aviation safety. The collision of high-speed flying objects will generate huge energy and cause irreversible damage to the material and structure of the aircraft. Therefore, the anti-bird strike test is very important. The real bird body is complex, impacted in a solid state, and then shattered in a short period of time, and then presented as a viscous fluid or many fragments, so at different impact speeds, the bird body exhibits different material properties , and according to the reaction of the force, the impacted part of the aircraft will also change, so the geometry and material of the damage to the bird body and the aircraft will undergo highly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08B64F5/60
CPCB64F5/60G01M7/08
Inventor 曹琬婷罗刚陈伟赵振华刘璐璐张峰旗
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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