This paper discusses a nozzle geometric design allowing unobstructed beam passage while maintaining high area ratio for both chamber flow and exit flow. This design has efficient energy conversion using volume absorption providing high specific impulse and thrust. Extension of operating frequency to existing gyrotron range is possible and allows device test in the near future. Chamber pressure must be below one atmosphere at these frequencies to limit beam intensity and avoid breakdown. For this reason, device operation below 25 kilometers is not possible. However, with launch assist, use of earth‐based beam source may be feasible. The nozzle design permits IR and optical waveband entrance so that plasma and internal surface heating can also be considered as combustion options. Lunar‐based source options are considered using lunar refuel to lower cost of return‐to‐earth and moon‐to‐Mars missions.


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    Titel :

    Single Port Electro‐Thermal Propulsion — Design Factors


    Beteiligte:
    Johansen, Donald G. (Autor:in) / Komurasaki, Kimiya (Herausgeber:in) / Yabe, Takashi (Herausgeber:in) / Uchida, Shigeaki (Herausgeber:in) / Sasoh, Akihiro (Herausgeber:in)

    Kongress:

    BEAMED ENERGY PROPULSION: Fourth International Symposium on Beamed Energy Propulsion ; 2005 ; Nara (Japan)


    Erschienen in:

    AIP Conference Proceedings ; 830 , 1 ; 329-340


    Erscheinungsdatum :

    02.05.2006


    Format / Umfang :

    12 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Single Port Electro-thermal Propulsion-Design Factors

    Johansen, D. G. | British Library Conference Proceedings | 2006


    Single Port Electro‐Thermal Propulsion—Performance Factors

    Johansen, Donald G. / EMF Research | American Institute of Physics | 2008


    Single-port Electro-thermal Propulsion-Performance Factors

    Johansen, D.G. | British Library Conference Proceedings | 2008



    Electro-propulsion system applications

    Stearns, J.W. | Engineering Index Backfile | 1962