While NASA's current next-generation launch vehicle research has largely focused on advanced all-rocket single-stage-to-orbit vehicles (i.e. the X-33 and it's RLV operational follow-on), some attention is being given to advanced propulsion concepts suitable for 'next-generation-and-a-half' vehicles. Rocket-based combined-cycle (RBCC) engines combining rocket and airbreathing elements are one candidate concept. Preliminary RBCC engine development was undertaken by the United States in the 1960's. However, additional ground and flight research is required to bring the engine to technological maturity. This paper presents two options for flight testing early versions of the RBCC ejector scramjet engine. The first option mounts a single RBCC engine module to the X-34 air-launched technology testbed for test flights up to about Mach 6.4. The second option links RBCC engine testing to the simultaneous development of a small-payload (220 lb.) two-stage-to-orbit operational vehicle in the Bantam payload class. This launcher/testbed concept has been dubbed the W vehicle. The W vehicle can also serve as an early ejector ramjet RBCC launcher (albeit at a lower payload). To complement current RBCC ground testing efforts, both flight test engines will use earth-storable propellants for their RBCC rocket primaries and hydrocarbon fuel for their airbreathing modes. Performance and vehicle sizing results are presented for both options.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Options for flight testing rocket-based combined-cycle (RBCC) engines


    Contributors:
    Olds, John (author)

    Conference:

    AIAA/ASME/SAE/ASEE Joint Propulsion Conference ; 1996 ; Atlanta, GA, United States


    Publication date :

    1996-07-03


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





    Options for Flight Testing Rocket-Based Combined-Cycle (RBCC) Engines

    Olds, J. / American Institute of Aeronautics and Astronautics / Society of Automotive Engineers et al. | British Library Conference Proceedings | 1996