A landing impact test device and test method thereof

Abstract

The invention discloses a landing impact test device, and a method for conducting the landing impact test by utilizing the device. The device comprises a test frame, a suspension unit, a percussion control unit, a fixed pulley, a steel cable, a motor, a landing bed and a test cabin. According to the technical scheme of the invention, based on the energy conservation law, the terrain clearance and the tilt angle of the test cabin are regulated, so that the potential energy is converted into the kinetic energy after the application of the test cabin. The preset vertically falling velocity and the preset horizontal velocity of the test cabin are realized. Meanwhile, the posture of the test cabin is set by a regulation tool, and a corresponding landing impact simulated medium can be laid on the landing bed according to the test requirements of different landing grounds. In this way, the soil mechanics characteristics of the simulated medium are enabled to accord with the soil properties of real landing grounds. The authenticity and the reliability of test parameters for the landing impact test on the test cabin are improved. The test method is simple and easy to operate. Meanwhile, the device and the method are strong in bearing capacity, wide in horizontal speed control range, controllable in posture and high in safety coefficient.

Description

technical field [0001] The invention relates to the technical field of mechanical tests, in particular to a landing impact test device and a test method thereof, which are suitable for landing impact tests of various spacecraft, aircraft and other aircraft. Background technique [0002] The spacecraft has to bear the landing shock during the landing process, and the shock load will cause a certain degree of damage to the personnel and equipment in the cabin. In order to ensure the safety of personnel and equipment on board, it is necessary to obtain test data through landing shock tests and analyze the test data to study the response of the spacecraft to the landing shock, obtain key performance and data of the landing shock, and verify the structural design of the spacecraft , The shock attenuation performance of the mechanism design of the buffer device, and evaluate its landing safety. [0003] Among the existing methods in China, such as "Impact Test Method for Railway ...

AI Technical Summary

Problems solved by technology

This device is mainly used for a 1 / 2 scaled-down crew cabin, which is not universal and has a relatively simple structure. It simulates the vertical velocity, horizontal velocity, and roll angle during landing, but cannot simulate the pitch angle of the cabin during landing.

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