Effect of Temperature and External Load on Pre-Tightening Force of Satellite-Rocket Belt

Abstract

The satellite-rocket unlocking device is an important part for the smooth separation of the satellite and the rocket after they arrive the scheduled orbit. This paper aims to study the temperature and the external load effect on the belt pre-tightening force, which is an important design parameter that directly determines the reliability of the connection between satellite and rocket. Formula is given for calculating preload change of the belt. Along with the temperature change, the percentage error between the calculation results and test results is 0.88%-6.9%, and with the external load increasing the preload is increasing which follows the increase of the press on the interface surface, and the percentage error between calculation results and test results is 1.7%-9.4%, the result is very useful to calculate the preload of the satellite-rocket belt.