Application of an Engineering Inviscid-boundary Layer Method to Slender Three-dimensional Vehicle Forebodies

An engineering inviscid-boundary layer method has been modi ed for application to slender threedimensional (3-D) forebodies which are characteristic of transatmospheric vehicles. An improved shock description in the nose region has been added to the inviscid technique which allows the calculation of a wider range of body geometries. The modi ed engineering method is applied to the perfect gas solution over a slender 3-D conguration at angle of attack. The method predicts surface pressures and laminar heating rates on the windward side of the vehicle that compare favorably with numerical solutions of the thin-layer Navier-Stokes equations. These improvements extend the 3-D capabilities of the engineering method and signi cantly increase its design applications.