Inventors:
Robert B. Spencer - Denver CO
Thomas D. Megna - Littleton CO
James R. Greenwood - Littleton CO
Daniel J. Laintz - Denver CO
Assignee:
Lockheed Martin Corporation - Bethesda MD
International Classification:
B64G 100
US Classification:
244158R, 244190, 244172, 244 63
Abstract:
A reusable first stage ( ) includes a booster engine system ( ) for providing thrust during launch, a structural assembly ( ), canards ( ), jet engines ( ), wings ( ), elevons ( ) and retractable landing gear ( ). After separation, the jet engines ( ) and aerodynamic control surfaces are used to return the first stage to a landing strip. The booster system ( ) includes a structurally stable outer skin system such as an isogrid structure. The first stage ( ) is thereby adapted for controlled descent and recovery with minimal structural enhancement or added mass.