COMPARISON OF THEORETICAL AND EXPERIMENTAL PRESSURE AND HEAT-TRANSFER DISTRIBUTIONS ON THREE BLUNT NOSED CYLINDERS IN HYPERSONIC FLOW

Abstract : Pressure and heat-transfer data over flow-aligned cylinders with three nose shapes (Hemisphere, flat-face, and rounded-shoulder flat-face) have been obtained at nominal Mach numbers of 6, 8, 10, and 19 and over the Reynolds number range of 9,000 to 2,160,000, based on model diameter. The experimental pressure and heat-transfer distributions are compared with theoretical predictions and with selected previously published data from other facilities. The agreement between the experimental results and selected theories for the hemisphere cylinder model is good. However, the pressure and heat-transfer distributions on the other two configurations could not be adequately predicted over the entire model surface.