CAJ | 학술논문

采用有旋特征线理论求解壁面压力分布可控的内收缩基准流场，再结合流线追踪，设计了五种不同位置的矩形捕获型线的三维内收缩前体/进气道。通过数值模拟，研究了进气道捕获型线的不同径向与周向位置对进气道性能与飞行器前体纵、航向气动性能的影响规律。结果表明：三维内收缩前体/进气道产生了较大的力与力矩，对飞行器纵、航向操稳特性均有影响；捕获型线径向位置远离中心体时，有利于改善前体/进气道的纵、航向静稳定性；捕获型线沿周向位置变化时，对纵向静稳定性影响较小，捕获型线纵向面对称时，溢流口朝下，能显著提高有攻角时进气道的流量系数，但会产生较大抬头力矩，航向静稳定性也变差。
채용유선특정선이론구해벽면압력분포가공적내수축기준류장，재결합류선추종，설계료오충불동위치적구형포획형선적삼유내수축전체/진기도。통과수치모의，연구료진기도포획형선적불동경향여주향위치대진기도성능여비행기전체종、항향기동성능적영향규률。결과표명：삼유내수축전체/진기도산생료교대적력여력구，대비행기종、항향조은특성균유영향；포획형선경향위치원리중심체시，유리우개선전체/진기도적종、항향정은정성；포획형선연주향위치변화시，대종향정은정성영향교소，포획형선종향면대칭시，일류구조하，능현저제고유공각시진기도적류량계수，단회산생교대태두력구，항향정은정성야변차。
The hypersonic inward turning inlet has characteristics of high mass capture capability and compression capability,meanwhile it has direct influences on the design of the flight vehicle control ability and stability,therefore the design of forebody/inlet integration is of critical importance.In the paper,axi-symmetrical basic flow fields with controlled pressure distribution used for the designing of hypersonic inward turning inlet was established using the rotational method of characteristics.In combination of the streamline tracing technique,five forebodies/inward turning inlets were designed.The influences of different radial and circumferential positions on the inlet and forebody performances in longitudinal and course were studied numerically.The results show that the forebodies/inlets generate large aerodynamic forces and mo-ments which influence both the flight vehicle control ability and stability.With the capture line being off from the center body,the performances of the flight vehicle static instability both longitudinal and lateral are improved;when the capture line changes in the circumferential direction,the degree of longitudinal static stability remains nearly unchanged;when the capture line is symmetrical about the longitudinal plane,mass flow ratio increases significantly compared to those with asymmetrical capture lines,but the penalty is the deterioration of the performance of course static stability.These conclusions presented in this paper have val-uable contributions to the design of flight vehicles with high performance of handling and stability.