LIBROS DEL AUTOR: ravi purandare

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  • A Buoyancy-Propelled Airship
    Ravi Purandare
    The concept of buoyancy propulsion is investigated for a lighter-than-air platform in the upper- stratosphere. This alternative to conventional thrust propulsion requires a cyclical change in net buoyancy (buoyancy minus weight). Methods have proved efficient in water. ’Underwater Gliders’ undertake long missions covering vast distances using little power. High altitude, ...
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