Generalized Propulsion System for Panel ExTension SATellite (PETSAT) Based on Hydrogen Peroxide and Open-Modular Architecture
- Paper number
IAC-08.C4.1.12
- Author
Prof. Hironori Sahara, Tokyo Metropolitan University, Japan
- Coauthor
Prof. Shinichi Nakasuka, University of Tokyo, Japan
- Coauthor
Dr. Yoshiki Sugawara, Aoyamagakuin University, Japan
- Coauthor
Ms. Chisato Kobayashi, Spacevoke Ltd., Japan
- Year
2008
- Abstract
Microsatellites developed by non-governmental association or university groups are now in vogue in the world, one of which is progressed by Space Oriented Higashi-Osaka Leading Association (SOHLA) as its Our-Town satellites, SOHLA-1 and SOHLA-2. SOHLA-2 is the first demonstrator of Panel ExTension SATellite (PETSAT) which was first proposed by the Nakasuka Laboratory of University of Tokyo and consists of standardized subsystem panels. The PETSAT is based on innovative open-modular architecture and contributes to cost-reducing in manufacturing a satellite in order to familiarize development and utilization of the satellite for our future.
SOHLA and University of Tokyo collaborate to develop a chemical propulsion system of moderate price and decent performance in the SOHLA-2 project. It is the most important that microsatellites like the Our-Town satellites may be fabricated by non-proper specialist of propulsion or the other parts and SAFETY FIRST POLICY is the first priority even if its performance is sacrificed to some extent. Based on the concepts, we selected Hydrogen Peroxide (HP) monopropellant (MONO-PROP) or bipropellant (BI-PROP) of a combination of Hydrogen Peroxide and fuel.
We are devoting ourselves to develop a generalized propulsion system which is available for both MONO-PROP and BI-PROP. Indeed is one of the green propellants, but it is such strong oxidizer that burn skin and it intensively decomposes by microscopic scratch on its storage tank and may blow out it. It indicates that HP of lower concentration level is more suitable for the Our-Town satellites based on the SAFETY FIRST POLICY and we did not choose Rocket Grade Hydrogen Peroxide (RGHP) but HP solution of up to 60
Now we completed a Flight Model (FM) of the generalized propulsion system for PETSAT, and are conducting captive tests of the FM working as MONO-PROP and BI-PROP. As the result, MONO-PROP with 50 seconds of specific impulse with 1 N class thrust and BI-PROP with 120-150 seconds of specific impulse are probable, and the compatibility of the FM working as MONO-PROP and BI-PROP, was confirmed.
- Abstract document
- Manuscript document
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