The development and flight history of the fisrt generation 490N liquid apogee engine
- Paper number
IAC-11,C4,1,15,x11693
- Author
Mr. CHANGGUO LIU, China
- Coauthor
Dr. Minqing Zhang, Northwestern Polytechnical University, China
- Coauthor
Ms. HongLing Zhou, China
- Coauthor
Mr. Qingguo Lin, China
- Coauthor
Mr. Chenghu Yang, China
- Coauthor
Mr. Feng Yao, China
- Coauthor
Ms. Ting Zhao, China
- Year
2011
- Abstract
The Liquid Apogee Engine is used to provide the thrust for apogee injection manoeuver required for the spacecraft planned mission. The engine provides thrust, controlled by two electrically driven valves. The Chinese unique 490N Liquid Apogee Engine,model FY-25,was developed by Shanghai Institute of Space Propulsion, has the featurs of long duration,high reliability and stable performance using storable nitrogen tetrxoide and monomethylhydrazine propellants. The thruster chamber made from NbHf10-1M niobium alloy has successfully demonstrated a nominal vacuum impulse specific of 2990N.s/kg at a nozzle area ration of 154:1 and chamber pressure of 0.68MPa,the maximum operating temperature of 1360℃ at the throat. The engine has demonstrated the capability of 84 accumulated restart and about 28702.5 second accumulated burning time with single unit. In November of 1994, the engine was used on the first DFH-3 communication satellite firstly. Later, the engine was used on the other satellites, such as the Moon Exploring Chang-E Satellites, BeiDou Navigation Satellites, Sinsat-2 Satellite, Nigcomsat-1 Satellite and Venesta-1 Satellite. Up to now, it has been flight qualified in 25 satellites with 100 percent successfully, including four DFH-4 platform and twenty one DFH-3 platform satellites. The design, the characteristics, and the flight history of the model FY-25 490N liquid apogee engine was described in detail in this paper. Particularly, in the case of some failures occurring on several satellites, the engine completed the maneuver task successfully. The development and qualification hot firing test of the next generation high performance 490N liquid apogee engine have been accomplished. The impulse specific of the next generation 490N engine is about 3090N.s/kg, the first flight product will be delivered in March of 2011.
- Abstract document
- Manuscript document
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