MORISHITA Naoki, MOCHIHARA Yoshitaka, ARAKAWA Satoshi, MIURA Masashi, SAKAMOTO Yuki, MATSUURA Yoshiki, SAKAINO Masanori, TAKEMAE Toshiaki, TAKEDA Shinichi, HISADA Shinsaku, IGAWA Hirotaka, TOKUDOME Shinichiro, TAKASHIMA Takeshi
Journal of Evolving Space Activities 2 n/a 2024年 査読有り
The Institute of Space and Astronautical Science (ISAS) of the Japan Aerospace Exploration Agency (JAXA) conducts a deep space exploration mission named Demonstration and Experiment of Space Technology for INterplanetary voYage with Phaethon fLyby and dUst Science (DESTINY+). The mission requires a high-performance, compact solid kick stage with a high mass ratio and high system safety. The kick stage employes a newly developed laser ignition system to meet these requirements. We designed a laser unit for upper stages (LUUS), two types of laser-initiated pyrotechnic devices for solid motor ignition and a separation device actuator (the LID and LCTG) for the kick stage system. Optical fiber paths connecting the LUUS to LID/LCTG enables a continuity check by optical frequency domain reflectometry (OFDR). We successfully conducted continuity checks with OFDR and ran laser ignition tests to validate the design in simulating assembly- and launchsite operations.