APPLICATION OF AN ENGINEERINGINVISCID - BOUNDARY LAYER METHODTO SLENDER THREE - DIMENSIONAL VEHICLE FOREBODIESChristopher

An engineering inviscid-boundary layer method has been modiied for application to slender three-dimensional (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 modiied engineering method is applied to the perfect gas solution over a slender 3-D con-guration 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 signiicantly increase its design applications. unit vectors of shock-oriented coordinate system L reference length M Mach number n coordinate normal to shock p pressure q heat transfer rate s distance V velocity magnitude