The feasibility of rebuilding and testing a nuclear thermal rocket (NTR) for the Mars mission has been investigated. Calculations indicate that an NTR would substantially reduce the earth-orbit assembled mass compared to LOX/LH sub 2 systems. The mass savings were 36% and 65% for the cases of total aerobraking and of total propulsive braking respectively. Consequently, the cost savings for a single mission of using an NTR, if aerobraking is feasible, are probably insufficient to warrant the NTR development. If multiple missions are planned or if propulsive braking is desired at Mars and/or at Earth, then the savings of about $7B will easily pay for the NTR development. Estimates of the cost of rebuilding a NTR were based on the previous NERVA program's budget plus additional costs to develop a flight ready engine. The total cost to build the engine would be between $4 to 5B. The concept of developing a full-power test stand at Johnston Atoll in the Pacific appears very feasible. The added expense of building facilities on the island should be less than $1.4B. (ERA citation 10:041862)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Assessment of the Advantages and Feasibility of a Nuclear Rocket


    Beteiligte:
    S. D. Howe (Autor:in)

    Erscheinungsdatum :

    1985


    Format / Umfang :

    17 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch






    Advantages of medium thrust nuclear-electric rocket

    Halle, Jr., R.W. / Gronich, S. | Engineering Index Backfile | 1961


    Advantages of medium thrust nuclear-electric rocket

    Halle, Jr., R.W. / Gronich, S. | Engineering Index Backfile | 1961


    Advantages of a Medium Thrust Nuclear-Electric Rocket

    Hallet, R. W. / Gronich, S. | SAE Technical Papers | 1961