轨控系统热喷干扰效应数值模拟

doi:10.7527/S1000-6893.2021.25941

Abstract

Abstract: Hot jet interaction effect and its influence on aerodynamic characteristics and aero-thermal environment of aircraft is an important issue remaining to be solved in research on jet interaction. By solving three-dimensional chemical non-equilibrium Navier-Stokes equations, this paper analyzes the influence of afterburning effect and heterogeneous gas injection effect in the high-speed aircraft divert control system on aerodynamic characteristics and aero-thermal environment of the aircraft. The hot jet interaction effect on the aircraft with different flight velocity, flight alttude and angle of attack is also analyzed. The result shows that hot jet interaction effect has pronounced influence on the aerodynamic characteristics and aero-thermal environment of aircraft, mainly including afterburning effect and heterogeneous gas injection effect. In this paper's given conditions, hot jet interaction effect is dominated by afterburning effect, which can increase the thrust produced by jet interaction, produce an additional pitching up moment, and increase the heat flux in jet interference area. The higher the flight velocity, and the lower the flight altitude. The nozzle outlet on the windward side will enhance afterburning effect. Heterogeneous gas injection effect is enhanced when flight velocity is high and nozzle outlet is on windward side, but it is still insignificant compared with afterburning effect.

Key words: divert control system, jet interaction, afterburning effect, non-equilibrium effect, aerodynamic characteristic, aero-thermal environment

CLC Number:

FU Yang'aoxiao, DING Mingsong, LIU Qingzong, JIANG Tao, SHI Run, DONG Weizhong, GAO Tiesuo. Numerical study of hot jet interaction effect in divert control system[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(9): 125941-125941.

References

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Numerical study of hot jet interaction effect in divert control system

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