- The objectives of this work are to study the potential use of heat addition as a means of aerodynamic control and to make measurements suitable for comparison with CFD calculations. The experiments are conducted in a Mach 3 indraft wind tunnel with a 15 half angle instrumented cone used to measure aerodynamic perturbations. Free stream heat addition is achieved through the use of microwave driven discharges. Lift and drag changes over the cone are measured with a force balance. Asymmetric discharges produce changes in lift and drag as a function of microwave power. 2003 by Princeton University.