A Single-pressing Point Solar Array Restraint and Release System Based on Thermal Knife

This paper describes a single-pressing point Solar Array Restraint and Release System (SARRS) based on thermal knife. Compared with the pyrotechnics SARRS, thermal knife is small impact, no pollution, convenient transport; Compared to the multi-pressing point thermal knife SARRS, a single-pressing point SARRS is simple, high reliability, more suitable for aerospace products, especially suitable for small satellite SARRS. This paper first introduces the composition and working principle of SARRS based on thermal knife and its key components. Secondly, the ground test is carried out on the modal of its emission state and in- orbit state. Finally, the relevant tests were carried out on the release of room temperature and the low temperature.