ETS-VI (Engineering Test Satellite VI), the Japanses first two ton-class stationary satellite, is scheduled to be launched in 1992 by the H-II heavy launch vehicle. Under the contract with the National Space Development Agency, IHI conducts the apogee stage integration for the EST-VII. Trade-off study on various possibilities resulted in stage configuration in separable blow-down type with storable propellant; i.e., NTO/N2H4 for the advantages of simplicity, lower program risks and shorter development period and christened LAPS (liquid Apogee Propulsion System). LAPS has a single 2000N-class engine and four thrusters and capabilities of on-orbit restarting, propellant settling and automatic engine shut-down with command from the satellite. The apogee engine has been firing tested over 500 times including sea-level firing test with 3500 seconds of duration that simulated flight operation and possibility of practical use as firmly convinced by the propulsion system.


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    Title :

    Development of Liquid Apogee Propulsion System for ETS-VI


    Contributors:
    U. Imachi (author) / M. Sato (author) / K. Miyoshi (author) / Y. Hayasaka (author)

    Publication date :

    1988


    Size :

    7 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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