Experimental technique for micro rolling aerodynamics of a maneuvering reentry body

Micro rolling aerodynamics of a maneuvering reentry body is investigated using wind tunnel test techniques with gas bearing and grating-high sensitivity photoelectric sensor system, so as to meet the continuing developed design requirements of maneuvering reentry vehicles. The measurement system can test the change rules of rotation speed of the asymmetric models, including model with strake and model with trimming wings. According to the change of the rotation speed, the motion equation is rebuilt to simulate the asymmetric model's motions, the rolling motion equations are solved using the method of engineering estimation and numerical simulation. The micro rolling aerodynamics can be deducted and analyzed. The time courses of rolling aerodynamics and the static rolling moment at various model attitude can be obtained, and the result obtained shows rational regularity, the requirement of micro-aerodynamic measuring of maneuvering reentry body is satisfied.