Effectiveness of Reaction Control System in Hypersonic Rarefied Reactive Flow

The present study completes the simulation of a Terminal High Altitude Area Defense-like missile's lateral jet flowfield at a rarefied high-altitude atmosphere using the in-house parallel direct simulation Monte Carlo-quantum kinetic method. For the simulation conditions, the flight speed and the flight altitude are set as 20 Ma and 80 km, with the real gas effect and rarefied gas effect considered. The influence of different impact factors, including angle of attack, angle of sideslip, jet pressure ratio, and jet Mach number, are investigated. The normal force coefficient and amplification factors are taken as indicators to evaluate the control performance. It is found that the gain effect of lateral jet interaction will drop when increasing angle of sideslip, jet pressure ratio, and jet Mach number, whereas the normal force coefficient of the missile will rise when raising jet pressure ratio and jet Mach number.