Two alternate mechanical pump concepts have been identified for the transfer of superfluid helium in space. Both pumps provide flow at sufficient head and have operating characteristics suitable for the Space Infrared Telescope Facility (SIRTF) refill mission. One pump operates at a relatively low speed and utilizes mechanical roller bearings, while the other operates at a higher rotational speed using either electromagnetic or tilting pad gas-dynamic bearings. The use of gas bearings requires transfer of normal helium so that the gas pressure within the pump casing is high enough to operate the bearings. The operating characteristics of both pumps are predicted, the dimensions are estimated and major technology issues are identified. The major issues for each pump design are cavitation performance and bearing development. Roller bearings require quantified reliability for operation in space while electromagnetic bearings require basic development as well as a complex control system. The low speed pump has significantly poorer hydraulic efficiency than the high speed pump, Space Cryogenics Workshop, 22-23 June 1987, Madison, WI, USA


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Mechanical pumps for superfluid helium transfer in space


    Weitere Titelangaben:

    Mechanische Pumpen fuer den Transfer von superfluidem Helium im Weltraum


    Beteiligte:
    Izenson, M.G. (Autor:in) / Swift, W.L. (Autor:in)

    Erschienen in:

    Cryogenics ; 28 , 2 ; 90-95


    Erscheinungsdatum :

    1988


    Format / Umfang :

    6 Seiten, 14 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Superfluid Helium on-Orbit Transfer (SHOOT) Flight Demonstration

    P. Shirron / M. Dipirro / J. Tuttle et al. | NTIS | 1993


    Superfluid helium tanker instrumentation

    Woodhouse, C.E. / Kashani, A. / Lukemire, A.T. | Tema Archiv | 1989


    Superfluid Helium On-Orbit Transfer (Shoot) Flight Demonstration

    Shirron, P. / DiPirro, M. / Tuttle, J. et al. | British Library Conference Proceedings | 1993


    Superfluid Helium On-Orbit Transfer (SHOOT) flight demonstration

    Shirron, Peter / Dipirro, Michael / Tuttle, Jim et al. | NTRS | 1993