Use of lateral maneuver to extend the period of daylight landings from orbit.

Abstract

of the body tail, that pressure in the separated region was approximately zero, and that the boundary layer was laminar. The calculation of the laminar skin-friction coefficient and other viscous effects includes the effects of a balance between aerodynamic heat transfer to the body and radiative heat transfer from the body. This heat-transfer balance changes the temperature of the body as the total pressure is changed. That is, the average temperature of the body increases with increasing total pressure. Note also that the cone angle has been increased to allow for the boundary-layer displacement thickness. The measured CD is more nearly constant over the upper Re interval than is the calculated CD. If it is assumed that the difference in CD is because of the base pressure effects, then the difference in drag is the ratio of the base pressure to dynamic pressure (ps/q) • The values inferred from these measurements are approximately of those given in Ref. 3 for square-based models. Assuming that the flow separates at the corner of the boat tail, and that the flow downstream of this point has no influence upon the lift and moment, a value for the lift and mo