A near-optimal guidance law for the ascent trajectory from earth surface to earth orbit of a fully reusable single-stage-to-orbit pure rocket launch vehicle is derived. Of interest are both the optimal operation of the propulsion system and the optimal flight path. A methodology is developed to investigate the optimal throttle switching of dual-fuel engines. The method is based on selecting propulsion system modes and parameters that maximize a certain performance function. This function is derived from consideration of the energy-state model of the aircraft equations of motion. Because the density of liquid hydrogen is relatively low, the sensitivity of perturbations in volume need to be taken into consideration as well as weight sensitivity. The cost functional is a weighted sum of fuel mass and volume; the weighting factor is chosen to minimize vehicle empty weight for a given payload mass and volume in orbit.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Near-Optimal Operation of Dual-Fuel Launch Vehicles


    Beteiligte:
    Ardema, M. D. (Autor:in) / Chou, H. C. (Autor:in) / Bowles, J. V. (Autor:in)

    Kongress:

    Atmospheric Flight Mechanics ; 1996 ; San Diego, CA, United States


    Erscheinungsdatum :

    01.01.1996


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Near-optimal operation of dual-fuel launch vehicles

    Ardema, M. D. / Chou, H.-C. / Bowles, J. V. | AIAA | 1996


    Near-Optimal Operation of Dual-Fuel Launch Vehicles

    Ardema, M.D. | Online Contents | 1996


    Near-optimal operation of dual-fuel launch vehicles

    Ardema, M. / Chou, H.-C. / Bowles, J. | AIAA | 1996


    Near-Optimal Operation of Dual-Fuel Launch Vehicles

    M. D. Ardema / H. C. Chou / J. V. Bowles | NTIS | 1996


    Near-Optimal Propulsion System Operation for Air-Breathing Launch Vehicles

    Ardema, M. / Bowles, J. / Whittaker, T. et al. | British Library Conference Proceedings | 1994