Drop test device and method for landing buffer system

Abstract

The invention provides a landing buffer system drop test device and method. The landing buffer system drop test device comprises a supporting system, a guiding system, a buffer system, a counterweight system, a release system and an acquisition system. The guiding system is installed on the supporting system, the bottom end of the buffer system is installed on the guiding system, and the counterweight system comprises a static state and a simulated landing state. When the counterweight system enters a simulated landing state from a static state under the control of the release system, the counterweight system can move from the top end of the buffer system to the bottom end of the buffer system under the guidance of the guiding system and can stop under the action of the buffer system. The acquisition system can acquire physical quantity information generated by the movement, the structure is simple, the cost is low, the operation and the installation are convenient, the height of the whole machine is effectively reduced, and the experiment safety is improved.

Description

technical field [0001] The present invention relates to the field of planetary surface landing buffer technology in the field of aerospace technology, in particular to a landing shock test device and method for a landing buffer system. Background technique [0002] The landing shock test is a dynamic characteristic test that simulates the aircraft landing and hitting the ground on a special test facility on the ground. It is used to verify whether the aircraft's structural strength, stiffness, buffer stroke, overload acceleration and other related indicators meet the design requirements. It is a landing buffer. A key part of design verification. [0003] With the successful landing of the Chang'e-5 lander, my country's three-step lunar exploration project has achieved complete success. In the future, our country will continue to implement multiple deep space exploration missions such as the exploration of the moon, Mars, asteroids, and Jupiter. Among them, the large-load l...

AI Technical Summary

Problems solved by technology

At present, the traditional drop vibration test device is verified by the free fall of the buffer system. In order to achieve the upper limit of the impact speed, this kind of drop vibration test device usually has a very high vertical height, the overall size and structural foundation are large, and the center of gravity is relatively high. Turning moment Larger, the impact position is shifted, and there are potential safety hazards

For large-load landers, the traditional drop-shock test device needs to be designed for a higher drop height, which has greater adverse effects

[0005] Patent document CN111735598A discloses a new type of multi-condition drop shock test device and test method for a landing buffer mechanism. The device includes a bench system, a lifting system, a drop shock system and a load collection system. The vibration system is set on the platform system and can slide vertically, and the load acquisition system is set under the drop vibration system; adjust the landing attitude of the landing legs in the drop vibration system, and fix the landing attitude, and raise the drop vibration system to the predetermined level. The height is unlocked by the unlocking mechanism, and the drop shock system slides freely along the cylindrical guide rail under the action of gravity, so that the foot pads on the landing legs are in contact with the three-dimensional force measuring platform to simulate the collision process between the lander and the ground and record the data. The unlocking mechanism and components in the design are complex and need to be further optimized

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