Method for verifying stable lunar surface takeoff of spacecraft

Abstract

The invention provides a method for verifying stable lunar surface takeoff of a spacecraft, and designs a landing attitude and initial terrain simulation method, a takeoff motion characteristic compensation method, an unconstrained low-gravity environment simulation method, an equivalent disturbance simulation method and the like when the spacecraft takes off on the lunar surface according to the difference of earth-lunar surface takeoff conditions. The verification of the lunar surface takeoff condition of the spacecraft on the ground is realized, a safety recovery method after the takeoff test is further designed on the basis, the purpose of repeatable verification is achieved, and the test safety is improved; through the test method, earth-lunar environment difference is overcome, a lunar surface takeoff angle, a low-gravity environment, takeoff disturbance torque and the like are simulated in a ground takeoff test, the problem that thrust of an engine is reduced under the atmospheric environment condition is solved, what is ensured is that the ground test covers the real flight process, the purpose of rigorous examination is achieved, after the test is finished, air recovery can be implemented, the safety of the takeoff verifier is ensured, and the requirements of multiple tests are met.

Description

technical field [0001] The invention relates to the field of take-off of extraterrestrial celestial bodies of spacecraft, in particular to a method for verifying the stable take-off of a lunar surface of a spacecraft. Background technique [0002] So far, only the United States and the former Soviet Union have successfully implemented lunar take-off missions. Among them, the United States implemented a manned moon landing, which is quite different from the unmanned sampling and return mission implemented by my country. Since Apollo11, it has been completed six times. For the lunar take-off mission, during the development process, the engineers designed the LLRV ground verifier and simulated the gravity environment on the lunar surface, which is mainly used to train astronauts to control the spacecraft during lunar landing and take-off. The Apollo 5 tester simulated the on-orbit separation of the two stages of the lunar module in low-Earth orbit, further verifying the stability...

AI Technical Summary

Problems solved by technology

Different from ground launch missions, the spacecraft will face complex working environments during the lunar takeoff process, such as uncertain takeoff attitude, orbital control engine plume reaction force, gravity environment difference, engine thrust deflection, etc., which has not been carried out in China before. Currently, only the United States and the former Soviet Union have completed this mission in foreign countries, and they have invested heavily in the context of the Cold War, supported by a large number of in-orbit flight testers. my country is facing a lunar take-off and ascent mission. On the one hand, the mission is new and there is no mature one. Successful experience can be used for reference. On the one hand, there are many uncertain factors and professional fields involved, and the disciplines are coupled with each other, so optimization solutions are required. Higher requirements are put forward for the ground verification technology. In order to ensure the complete success of the flight mission, it is necessary to simulate the lunar take-off process of the probe on the ground and fully assess the stability of the lunar take-off of the spacecraft under different working conditions.

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