Method for measuring device installation accuracy of spacecraft

Abstract

The invention relates to a method for measuring the device installation accuracy of a spacecraft. The method comprises: S1, a cabin of a spacecraft is filled with gas and the pressure in the cabin iskept to be stable; and S2, while the pressure in the cabin is stable, first-time accuracy measurement is carried out on a mounting position of a device on the cabin to obtain a first measurement result and then gas in the cabin is exhausted after measurement is completed. During the ground measurement process, the space pressure environment of the spacecraft is simulated and the gas is led into the cabin, so that the presses inside and outside the cabin of the spacecraft are kept to be one standard atmospheric pressure and thus the state of the cabin of the spacecraft is consistent with the state of the cabin of the spacecraft in actual space flight; and because of the accuracy measurement of the installation position of the device outside the spacecraft cabin, the deviation of the measurement accuracy caused by the different pressure environment factors is eliminated, so that the installation accuracy of the device on the cabin on the ground is consistent with that of the device on the cabin in an in-orbit state.

Description

technical field [0001] The invention relates to a method for measuring equipment installation accuracy, in particular to a method for measuring equipment installation accuracy for spacecraft. Background technique [0002] During the in-orbit flight of a spacecraft, various sensors are needed to complete related tasks, such as rendezvous and docking, on-orbit maintenance, etc. In order to ensure the accurate completion of the task, various sensors must meet the installation accuracy requirements during the final assembly of the spacecraft, which can be achieved by the fine measurement of the ground assembly, but the pressure environment inside and outside the sealed compartment during the final assembly fine measurement process is different from the on-orbit environment. Similarly, the shell structure of the sealed compartment is partially deformed, which causes the installation accuracy of the equipment to change. The installation accuracy of the equipment that meets the re...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for measuring the installation accuracy of spacecraft equipment to solve the problem that the installation accuracy of the equipment on the cabin of the spacecraft is inconsistent between the ground and the orbit

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