Testing device for imitating shot impact on fuel tank of airplane

Abstract

The invention discloses a testing device for imitating shot impact on a fuel tank of an airplane. The testing device comprises a pair of base sliding blocks, the fuel tank, a flame propagation observation box and a hollow box, wherein the pair of base sliding blocks is fixed on the lower surface of the fuel tank parallelly; a pressure bearing plate is arranged on a pressure relief opening in a top plate of a fuel tank body; the top plate of the fuel tank body is provided with an air / oxygen analyzer, a vacuum pump, an oil filling opening temperature / pressure measuring instrument, a fuel tank fan and an air / nitrogen filling opening; an oil outlet is formed in the middle of a bottom plate of the fuel tank; the flame propagation observation box is arranged on one side of the fuel tank; an incidence plate is arranged in the middle of the front side of the fuel tank; an impact plate is fixed on a fixed frame and is superposed with the incidence plate; an outgoing plate is arranged in the middle of the back surface of the fuel tank; and the hollow box of which the inner part is filled with soil is positioned on the back surface of the fuel tank. By the testing device, propagation conditions and state change of flame in fuel tanks of airplanes of different types after a nitrogen inerting technology is utilized can be imitated; and the testing device has the characteristics of simple structure and high universality.

Description

technical field [0001] The invention relates to the field of high survivability design of aircraft fuel tanks, in particular to a test device for simulating the impact of projectiles on aircraft fuel tanks. Background technique [0002] Among the various systems of the aircraft, the exposed area of ​​the fuel system usually accounts for more than 50% of the whole aircraft, and it is the most vulnerable system on the aircraft. In this system, the fuel tank has the largest exposed area and vulnerable area, and is the most vulnerable part. Combustion or explosion usually occurs in the fuel tank under the threat of attack. The combustion or explosion in the fuel tank will cause burns and shocks to the fuel tank and adjacent structures and systems, causing serious damage, which is the cause of the aircraft being killed in the combat environment. One of the most important reasons. [0003] The ignition sources in aircraft fuel tanks usually come from the following types. One is ...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the time-consuming and high-cost deficiencies in the prior art, the present invention proposes a test device for simulating the impact of aircraft fuel tanks by projectiles

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