“…C f = local skin friction h = static enthalpy H = shape parameter H e = shape parameter, 5 e */8 e H w = shape parameter, 5 W */6 W H. 1 O NE of the major problems associated with design of hypersonic airbreathing propulsion systems involves boundary-layer development in the inlet. This boundarylayer comprises a large portion of the inlet flow and is extremely complicated by virtue of the environment, including strong adverse pressure gradients, heat transfer, centrifugal forces and real gas effects.…”