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Formulation, Realization, And Demonstration Of A Process To Generate Aerodynamic Metamodels For Hypersonic Cruise Vehicle Design, Robert Mcdonald, D.N. Mavris
Formulation, Realization, And Demonstration Of A Process To Generate Aerodynamic Metamodels For Hypersonic Cruise Vehicle Design, Robert Mcdonald, D.N. Mavris
Aerospace Engineering
The desire to facilitate the conceptual and preliminary design of hypersonic cruise vehicles has created the need for simple, fast, versatile, and trusted aerodynamic analysis tools. Metamodels representing physics-based engineering codes provide instantaneous access to calibrated tools. Nonlinear transformations extend the capability of metamodels to accurately represent a large design space. Independence, superposition, and scaling properties of the hypersonic engineering method afford an expansive design space without traditional compounding penalties. This one-time investment results in aerodynamic and volumetric metamodels of superior quality and versatility which may be used in many forms throughout early design. As a module, they can be …
Supersonic Channel Airfoils For Reduced Drag, Stephen M. Ruffin, Anurag Gupta, David D. Marshall
Supersonic Channel Airfoils For Reduced Drag, Stephen M. Ruffin, Anurag Gupta, David D. Marshall
Aerospace Engineering
A proof-of-concept study is performed for a supersonic channel-airfoil concept,which can be applied to the leading edges of wings, tails, fins, struts, and other appendages of aircraft, atmospheric entry vehicles, and missiles in supersonic flight. It is designed to be beneficial at conditions in which the leading edge is significantly blunted and the Mach number normal to the leading edge is supersonic.The supersonic channel-airfoil concept is found to result in significantly reduced wave drag and total drag (including skin-friction drag) and significantly increased lift/drag although maximum heat-transfer rate was increased for the geometries tested.