A Measuring Method of Extending Distance of Disconnect Switch for Small Satellite

Abstract

The invention relates to a measurement method for the extension distance of a separation switch used for a moonlet. The measurement method comprises the following steps that: S1: designing a measurement tool; S2: installing the measurement tool; S3: determining a height difference (A3=A1-A2) between a satellite-rocket docking surface and a separation switch installation surface, and determining aheight difference (B3=B1-B2) between the free end of the separation switch and the separation switch installation surface; S4: determining a practical height difference (C3=B3-A3) between the free endof the separation switch and the satellite-rocket docking surface; and S5: judging a difference value between the C3 and a theoretical height difference C3' between the free end of the separation switch and the satellite-rocket docking surface, if |C3-C3'| is less than 0.1mm, proving that a separation switch installation position meets use requirements, and otherwise, elevating or lowering the separation switch. By use of the method, the problems of difficulty in measurement and big measurement error since the separation switch may be pressed by mistake and the satellite-rocket docking surface is likely to be scratched in a testing process because a caliper positioning benchmark is unstable are solved.

Description

technical field [0001] The invention relates to a method for measuring the extension distance of a separation switch for a small satellite, which is especially suitable for measuring the extension distance of a separation switch in the docking process of a small satellite and an arrow, and belongs to the technical field of spacecraft measurement. Background technique [0002] The separation switch for small satellites is an important device that provides separation signals for satellites and rockets, and is usually installed on the docking ring of satellites. When the satellite and arrow are not separated, the disconnect switch is in the pressed state, and after the satellite and rocket are separated, the disconnect switch is in the released state. According to the characteristics of the disconnect switch, a separation signal is given, and this is the satellite satellite time 0s. Therefore, the difference between the length of the free end of the separation switch in the com...

AI Technical Summary

Problems solved by technology

[0005] The technical solution of the present invention: In order to overcome the deficiencies in the prior art, a method for measuring the extension distance of the disconnect switch for small satellites is provided, by using the distance A3 between the docking surface of the satellite arrow and the satellite arrow with respect to the disconnect switch installation surface by using the measuring tool and feeler gauge And the distance B3 between the disconnect switch and the disconnect switch installation surface, and the distance C3 between the disconnect switch and the star-arrow docking surface is obtained by making a difference between the two test quantities with the disconnect switch installation surface as the same benchmark, which solves the problem of positioning due to the caliper The reference is unstable, and the separation switch may be pressed by mistake during the test, which may easily scratch the docking surface of the star and arrow, resulting in difficult measurement and large measurement errors.

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