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High-magnitude strong-impact test method

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

Inactive Publication Date: 2013-04-03
SHAANXI QIANSHAN AVIONICS
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  • Application Information

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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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specific Embodiment approach

[0028] like Image 6 , The high-value strong impact test method is mainly composed of a power generation system and a load waveform generation system.

[0029] 1. Strong impact power generating system

[0030] 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.

[0031] The gas source system is a device that provides launch power, including air pre...

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Abstract

The invention relates to a high-magnitude strong-impact test method and belongs to the technical field of aviation airborne electronic equipment. The test method is used for simulating that a fixed protection recorder installed on an airplane bears high-magnitude strong-impact during airplane crash. A test product undergoes changes with reduces speeds to generate strong impact, so that the large probability working condition of the protection recorder undergoing strong impact damage can be reflected during airplane crash, and the method has indoor actionability. According to the method, high-pressure gas serves as a power source, the test product is driven to be accelerated to a regulated speed in a specially-made guide device by utilizing the high-pressure gas to instantly release high pressure; at the time, a spring support is separated from the test product through a separating device for the spring support and the test product, and the test product independently impacts a load generating medium at the regulated speed to generate strong impact with the regulated load. By implementing the high-magnitude strong-impact test method, strong-impact verification of magnitude of over 6,000g / 5-8ms half sinusoidal waves can be achieved.

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] As the performance of aircraft continues to improve, especially for aircraft flying at high speeds (flying above Mach 1), the onboard environment and failure modes are far more severe than those of 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 / s 2 (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 increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08
Inventor 冯九胜孙庆亚姚军军柯燕
Owner SHAANXI QIANSHAN AVIONICS
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