轨控喷流干扰气动—运动一体化非定常数值模拟

针对运动条件对反作用控制喷流控制气动干扰的影响，基于雷诺平均N-S方程，建立非定常气动--运动一体化方法，通过计算流体力学（CFD）/刚体动力学（RBD）耦合求解，对一种采用轨控喷流直接力控制的锥柱裙外形进行了数值模拟，研究了干扰流场结构、力和力矩与飞行器状态随时间变化特性，分析了运动非定常计算和定常计算的对比结果以及外流参数（马赫数，攻角等）变化对气动运动特性的影响。研究结果表明：轨控喷流使飞行器运动时存在强烈的非定常特性，定常计算的法向力放大系数和干扰俯仰力矩大于运动非定常计算结果。

Unsteady Numerical Simulation of Orbit-Control Jet Interaction by Coupling Aerodynamics and Flight Dynamics

Aiming at the influence of motion conditions on the aerodynamic disturbance of reaction control jet control, an unsteady aerodynamic and motion integration method is established based on the Reynolds-averaged N-S equation. Numerical simulation of a cone-cylinder-flare model controlled by the direct force of the lateral jet reaction is numerically simulated.The characteristics of disturbance flow field structure, force and moment, and aircraft state are discussed. The calculated comparison results between the unsteady motion state and the steady state are analyzed.The effect of changes in inflow parameters (Mach number, angle of attack, etc.) on aerodynamic characteristics is analyzed. The research results show that the orbit-controlled jet has strong unsteady characteristics when the aircraft moves, and the normal force amplification factor and disturbing pitch moment calculated in steady state are higher than those calculated in unsteady motion state.