Estimation of Satellite and Tether Deployment States in STARS-C Mission
- Paper number
IAC-19,D4,3,10,x49663
- Author
Prof. Yoshiki Yamagiwa, Japan, Shizuoka University
- Coauthor
Mrs. Tatsuya Fujii, Japan, Shizuoka University
- Coauthor
Mr. Kenji Nakajima, Japan, Shizuoka University
- Coauthor
Mr. Hiromu Oshimori, Japan, Shizuoka University
- Coauthor
Dr. Shoko Arita, Japan, Shizuoka University
- Coauthor
Prof. Masahiro Nohmi, Japan, Shizuoka University
- Coauthor
Dr. Yoji Ishikawa, Japan, Obayashi Corporation
- Year
2019
- Abstract
STARS-C was the first trial of the tether deployment in orbit by using CubeSAT to certify and data acquisition for the important technology of space elevator. STARS-C was 2U in size, and consists of a mother satellite (MS) and a daughter satellite (DS), and is designed to deploy a 100-m tether between them composed of aramid fiber between them. The MS and DS have common subsystems, including power, communication, and command and data handling systems. They also have a tether unit with spool and reel mechanisms as a mission system and solar paddles with antennas. STARS-C was launched on December 9 in 2016, then released from JSSOD on December 19 in 2016, and was operated until its re-entry on March 2 in 2018. Unfortunately, the detail data for tether deployment could not be obtained because the condition of transmission was not good. However, we found that STARS-C was rotated from the optical data of STARS-C detected from the ground supported by JAPOS and the centrifugal force by this rotation largely influenced on the tether dynamics during deployment and after that. We also could estimate the tether deployment state that the tether was fully deployed at first, then the final deployment condition converged to a few tens meters by the rebound and the winding around satellites, from the data of the variation of STARS-C altitude, the satellite condition by the optical data, and the additional ground tests. The detail of the result will be presented in the conference.
- Abstract document
- Manuscript document
IAC-19,D4,3,10,x49663.pdf (🔒 authorized access only).
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