| In this work an analysis of aerodynamic forces, heat transfer, and an analogy between skin friction coefficient and heat transfer for a cone-cylinder combination and the TD-1A satellite submerged in free molecular flow, was made as a function of speed ratio. For the cone-cylinder combination the drag coefficient obtained showed a slight dependency on speed ratio for values greater than six, while the skin friction coefficient, the Stanton number, the thermal recovery factor, and the Reynolds Analogy factor were independent of speed ratio at values greater than about four. For the TD-1A spacecraft the drag coefficient becomes slightly dependent on speed ratio at values greater than about six, while the skin friction coefficient, the Stanton number, the thermal recovery factor, and the Reynolds analogy factor were independent of speed ratio at values greater than about five. For validation purposes the drag analysis was done both by free molecular flow and Newtonian theory and the differences have been discussed. |
