A method for verifying the stable take-off of spacecraft from the lunar surface

Abstract

The invention provides a method for verifying the stable take-off of a spacecraft on the lunar surface. According to the difference of the take-off conditions on the lunar surface, a method for simulating the landing attitude and initial terrain of the spacecraft when taking off from the lunar surface, and a compensation method for the take-off motion characteristics are designed. The gravity environment simulation method and the equivalent disturbance simulation method have realized the verification of the lunar take-off conditions of the spacecraft on the ground. On this basis, the safe recovery method after the take-off test is further designed to achieve the purpose of repeatability verification. The safety of the test is improved; through the above test method, the environmental differences between the earth and the moon are overcome, and the lunar take-off angle, low-gravity environment, and take-off disturbance torque are simulated in the ground take-off test, and the thrust drop of the engine under atmospheric environmental conditions is solved. To ensure that the ground test covers the real flight process, and has the purpose of tightening the assessment, air recovery can be implemented after the test is completed, ensuring the safety of the take-off validator and meeting the requirements of multiple tests.

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 the lunar surface of a spacecraft. Background technique [0002] So far, the only countries that have successfully implemented lunar take-off missions are the United States and the Soviet Union. Among them, the United States has implemented manned lunar landings, which is quite different from the unmanned sampling return mission implemented by my country. Since Apollo11, it has completed six moon landings. During the development process, the engineers designed the LLRV ground validator and simulated the gravity environment of the lunar surface, which was mainly used to train the astronauts' ability to control the spacecraft during lunar landing and take-off, and also through the launch of Apollo 5 The tester simulated the two-stage on-orbit separation of the lunar module in low-Earth orbit, whic...

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 Soviet Union have completed this mission abroad, 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 success. 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. The ground verification technology puts forward higher requirements. 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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