Porpoise is a bouyancy propelled underwater vehicle designed for utilization initially as an oceanographic research vehicle. It is designed to alternately descend and ascend as it glides through the water. Buoyancy control is utilized to effect the depth change and to obtain a thrust force along the flight path. The vehicle is equipped with wings hinged on a skewed axis so as the vehicle descends and the wings position to positive dihedral and have a positive angle of attack. As the vehicle ascends due to a created change in buoyancy, the wings position to negative dihedral and have a negative angle of attack (causing the wing lift force to oppose the ascent of the vehicle). (Author)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Porpoise


    Beteiligte:
    K. R. Marsh (Autor:in)

    Erscheinungsdatum :

    1964


    Format / Umfang :

    24 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Abundance of harbour porpoise and other small cetaceans in European Atlantic continental shelf waters

    Hammond, P.S. / Macleod, K. / International Council for the Exploration of the Sea | British Library Conference Proceedings | 2006


    A Drone Study of Sociality in the Finless Porpoise Neophocaena asiaeorientalis in the Ariake Sound, Japan

    Naruki Morimura / Akihiro Itahara / James Brooks et al. | DOAJ | 2023

    Freier Zugriff

    Using models to investigate a harbour porpoise bycatch problem in the southern North Sea - eastern Channel in spring 2005

    Haelters, J. / Jauniaux, T. / Kerckhof, F. et al. | British Library Conference Proceedings | 2006