The discovery of paraffin based fuels has lead to renewed interest in hybrid rocket research. Experiments have shown that they burn 3-5 times faster than conventional hybrid fuels. High thrust level that would have required a multi-port design in the past can now be achieved with a single-port motor. While tests performed in Stanford and NASA Ames have demonstrated the paraffin hybrids to be a promising technology, one of the major challenges has been the relatively low efficiency. The c* efficiency has ranged between 80% and 90% in experiments conducted at the Ames Hybrid Combustion Facility (HCF). The test motor in these experiments had a 45 inch long fuel grain with the initial port diameter ranging between 3 and 5_inches. The c* efficiency is defined as the ratio of measured and theoretical characteristic velocities and is related to how completely the fuel and oxidizer are converted to combustion products. A low efficiency means that the reactants burn incompletely, and the reaction does not release the maximum possible amount of energy.


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    Titel :

    Report on Hybrid Rocket Cold Flow Experiments


    Beteiligte:

    Erscheinungsdatum :

    01.01.2004


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



    Acoustic attenuation experiments on subscale, cold-flow rocket motors.

    BUFFUM, F. G. / DEHORITY, G. L. / PRICE, E. W. | AIAA | 1967


    Acoustic attenuation experiments on subscale, cold-flow rocket motors

    BUFFUM, JR., F. / DEHORITY, G. / PRICE, E. | AIAA | 1966


    Acoustic attenuation experiments on subscale, cold-flow rocket motors

    Buffum, Jr., F.G. / Dehority, G.L. / Slates, R.O. et al. | Engineering Index Backfile | 1967


    Cold-flow study of hybrid rocket motor flow dynamics

    Jenkins, R. / Cruit, W. / Smith, A. | AIAA | 1996