A Method for Generating Half-sine Acceleration Pulse Waveform in Strong Shock Test

Abstract

The invention discloses a method for generating a half-sine acceleration pulse waveform in a strong impact test. The method comprises: a light gas cannon system, projectiles, an airborne data recorder, a storage type acceleration sensor, a spring unit and a computer system. The airborne data recorder under test is installed in the projectile. At the same time, a storage type acceleration sensor is installed in the airborne data recorder under test. The spring unit is fixed on the guide rail of the light gas gun, and the projectile is installed at the position when the light gas gun is fired. Open the launch control valve of the light gas gun, launch the projectile, and collide with the spring unit after the projectile exits the muzzle; adjust the spring stiffness and the quality of the projectile to obtain the required pulse waveform width of the half-sine acceleration for the strong impact test, and adjust the speed of the projectile. The amplitude of the half-sine acceleration pulse waveform required for the strong impact test can be obtained. The invention has great significance for the performance test of various airborne accident recorders, has wide application range, is convenient to operate, and saves manpower, material resources and financial resources.

Description

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AI Technical Summary

Benefits of technology

This technology allows for better understanding on how well an object will behave when hit by another body during testing compared to previous methods that only had one peak or no waves at all. It also makes it easier to reuse existing equipment more frequently than previously possible due to its ability to produce full-wave accelerations over multiple strikes instead of just single ones.

Problems solved by technology

This patents describes different ways how an aircraft's safety records used for testing should conform to specifications when they were installed afterwards due to factors like environmental conditions that may affect their performance over time. Existing solutions involve trial runs where engine operators manually determine whether certain parts will fail under severe impact situations. However this process takes too long because it requires multiple trials which cannot match actual results from real world events.

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