The Missile Defense Agency (MDA) (formerly the Ballistic Missile Defense Organization) is embarking on a program to employ the use of High Altitude Airships (HAAs) for surveillance of coastal areas as a part of homeland defense. It is envisioned that these HAAs will fly at 70,000 feet continuously for at least a year, therefore requiring a regenerative electric power system. As part of a program to entice the MDA to utilize the NASA GRC expertise in electric power and propulsion as a means of risk reduction, an internal study program was performed to examine possible configurations that may be employed on a HAA to meet a theoretical surveillance need. This entailed the development of a set of program requirements which were flowed down to system and subsystem level requirements as well as the identification of environmental and infrastructure constraints. Such infrastructure constraints include the ability to construct a reasonably sized HAA within existing airship hangers, as the size of such vehicles could reach in excess of 600 ft. The issues regarding environments at this altitude are similar to those that would be imposed on satellite in Low Earth Orbit. Additionally, operational constraints, due to high winds at certain times of the year were also examined to determine options that could be examined to allow year round coverage of the US coast.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Advanced Concepts Research for Flywheel Technology Applications


    Beteiligte:

    Erscheinungsdatum :

    2004-08-01


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Advanced flywheel technology

    Grudkowski,T.W. / Polley,E.C. / United Technologies,US | Kraftfahrwesen | 1995


    Advanced electrical conversion systems for flywheel applications

    Eisenhaure, B. / O'Dea, S. / Stanton, W. | Tema Archiv | 1978


    Flywheel Technology

    Post, R. / United States; Department of Commerce Technology Administration | British Library Conference Proceedings | 1993


    Aerospace Flywheel Technology Development for IPACS Applications

    McLallin, Kerry L. / Jansen, Ralph H. / Fausz, Jerry et al. | NTRS | 2001


    Flywheel Technology Development Program for Aerospace Applications

    Christopher, D. / Beach, R. / IEEE | British Library Conference Proceedings | 1997