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Development of the Liquid Apogee Propulsion System for ETS-VI
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English
Abstract
The Engineering Test Satellite VI (ETS-VI) is a 2 ton class geostationary satellite to be launched by the H-II launch vehicle in 1993. The Liquid Apogee Propulsion System (LAPS) which is being developed for the ETS-VI is a pressure-fed, full blowdown bipropellant propulsion system using hydrazine and nitrogentetroxide (NTO) as propellants.
During the engineering models (EMs) tests and the apogee kick engine (AKE) firing tests, several problems were encountered but could be settled. Especially a thermal problem, which was encountered during the design verification test of the AKE was settled by adopting a unique method “the step-up blowdown scheme”.
In the LAPS program, not only the AKE but also other major components of the LAPS such as propellant tanks, 50 N class thruster, flowmeter, filter, bipropellant valve, fill-and-drain valve and pyrotechnic valves etc. were developed.
This paper presents the outline of the development of the LAPS and technical accomplishments.
Authors
Citation
Kobayashi, H. and Masuda, I., "Development of the Liquid Apogee Propulsion System for ETS-VI," SAE Technical Paper 912085, 1991, https://doi.org/10.4271/912085.Also In
References
- Kuroda, Y. Miyajima, H. Nagashima, R. Nakamura, M. “Bipropellant Performance Characteristics of MMH and N2H4 Fuels in Experimental Thrust Chambers” 15th ISTS Tokyo 1986
- Nagashima, R. et al. “Simple and High Performance Liquid Apogee Bipropellant Propulsion System” 15th ISTS Tokyo 1986
- Miyajima, H. et al. “Thermal Problems Related to Blowdown Operation of a Hydrazine Film Cooled Bipropellant Apogee Engine” 17th ISTS Tokyo 1990
- Kuroda, Y. Tadano, M. Miyajima, H. Iihara, S. Ban, H. “Popping Tests of Hydrazine/NTO Injectors for a 2000 N Thrust Apogee Engine” 17th ISTS Tokyo 1990
- Miyajima, H. Kusaka, K. et al. “Development of a Liquid Engine for the ETS-VI” 16th ISTS Sapporo 1988