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High-magnitude and strong impact test method

An impact test and measurement technology, which is applied in the field of aviation airborne electronic equipment, can solve the problems such as the inability to achieve high-energy and strong impact requirements, and achieve the effect of filling the gap of test technology, solving the bottleneck of strong impact resistance, and expanding the scope of assessment.

Inactive Publication Date: 2014-08-27
SHAANXI QIANSHAN AVIONICS
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AI Technical Summary

Problems solved by technology

Unable to achieve high energy and strong impact requirements of 6000g / 5-8ms or more

Method used

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  • High-magnitude and strong impact test method

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Experimental program
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Effect test

specific Embodiment approach

[0029] Such as Figure 6 , The high-value strong impact test method is mainly composed of a power generation system and a load waveform generation system.

[0030] 1. Strong impact power generating system

[0031] Can provide strong impact power source mainly gunpowder and high-pressure gas at present. Through analysis and comparison, the advantages of high-pressure gas over gunpowder are that it is easy to control and operate, high in safety, easy to manage, not affected by site restrictions and climate, and can be implemented indoors. Therefore, the high-value and strong impact test method of the protective recorder uses high-pressure gas as the power test method. The strong impact power generation system based on this method is mainly composed of an air source system, a launching part, a guiding part of the test piece, and a separation part between the bullet holder and the test product.

[0032] The gas source system is a device that provides launch power, including air...

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Abstract

The invention discloses a high-magnitude and strong impact test method, and belongs to the technical field of aviation airborne electronic equipment. According to the test method, the situation that a fixed type protection recorder installed on an airplane bears high-magnitude and strong impact when the airplane crashes is simulated, a tested product produces strong impact when bearing the change of reducing of the speed, the large probability working condition of the protection recorder when the protection recorder bears the strong impact damage can be reflected well when the airplane crashes, and indoor implementation is achieved. According to the method, a high-pressure gas medium serves as a power source, high pressure is released instantly through the high-pressure gas, the tested product is pushed to accelerate until the standard speed is reached in a specific guiding device, a bullet support and the tested product are separated through a separating device of the bullet support and the tested product, the tested product independently collides with a load generating medium with the required speed, and the strong impact with the required load is produced. By means of the high-magnitude and strong impact test method, the verification problem of the strong impact with the magnitude with the half-sine wave of 6000 g / 5-8 ms can be solved.

Description

technical field [0001] The patent of the invention relates to a high-value strong impact test method, which belongs to the technical field of aviation airborne electronic equipment. Background technique [0002] With the continuous improvement of aircraft performance, especially the aircraft flying at high speed (flying speed above Mach 1), its airborne environment and failure modes are far more severe than the current civil aircraft. At present, the strong impact test for aviation airborne electronic equipment—fixed protective recorder follows the test requirements in the international general ED-112 standard, that is, during the test, the strong impact energy should be equal to or greater than the peak acceleration of 33342m / s2 (3400g), half sine wave impact energy with a pulse width of 6.5ms, the actual waveform of the impact load should be able to obtain at least a peak acceleration of 3400g, and the impact time is not less than 6.5ms. This impact can be achieved by maki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08
Inventor 赵清洲冯九胜李俊峰柯燕孙庆亚姚军军
Owner SHAANXI QIANSHAN AVIONICS
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