Accession Number : ADD006304

Title :   Propulsion Assist Stage for Geosynchronous Orbit Injection from Space Shuttle.

Descriptive Note : Patent Application,


Personal Author(s) : Chiappetta,F R

Report Date : 15 Jun 1979

Pagination or Media Count : 24

Abstract : The patent application is concerned with a propulsion assist stage to be used in combination with a space shuttle in flight and with a payload to be launched into a low earth orbit from the space shuttle. The propulsion assist stage includes: a structural system that is mounted vertically within an openable cargo bay of the space shuttle; a solid propellant rocket motor that functions as the perigee kick (i.e., boost) motor and that is releasably connected to the lower end of the structural system; and a bi-propellant rocket engine that is mounted on the structural system at the upper end, encircling the solid propellant rocket motor, and that functions as the apogee kick motor. The payload is releasably attached to, and is positioned vertically on top of, the bi-propellant rocket engine. The payload-propulsion assist stage combination is spin launched, along a vertical axis, from the in-flight space shuttle; and, the perigee kick motor and the apogee kick motor are used to research the proper orbit, and then are individually and sequentially jettisoned, with the payload despinning, deploying, and centering the desired low earth orbit. (Author)

Descriptors :   *Patent applications, *Space shuttles, *Launching, *Payload, Equatorial orbits, Earth orbits, Solid propellant rocket engines, Liquid propellant rocket engines, Bipropellants, Booster rocket engines, Jettisonable equipment

Subject Categories : Liquid Propellant Rocket Engines
      Solid Propellant Rocket Engines
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE