03.4 - Applied Aerodynamics
ENGINE EXHAUST NOZZLE PLUME EFFECTS ON THE SONIC BOOM FOR A TYPE OF HYPERSONIC LONG-RANGE CIVIL VEHICLE
Z. Qian¹, Y. Leng¹, Z. Liu¹; ¹AVIC Aerodynamics Research Institute, China
Based on a type of hypersonic civil vehicle, engine exhaust nozzle plume are considered for investigating their effects on the sonic boom signature including overpressure and impulse. Here, the parameters include Mach number and nozzle pressure ratio (NPR). This work is accomplished through computational fluid dynamics (CFD) analysis. The near-field flows are calculated by the ARI_Overset CFD solver of AVIC ARI which is based on the Navier-stokes equations. The ground sonic boom over-pressure are calculated by the waveform parameter method (WAF) developed by Thomas. Both Mach number and NPR are varied in this work, and the amplitude of overpressure on the ground is obtained to evaluate the plume effects on the sonic boom.