CAJ | 학술논문

针对短距/垂直起降（STOVL）飞行器动态起飞过程，采用基于雷诺时均方程的标准k-ε模型数值模拟STOVL飞行器气动流场，研究STOVL飞行器吸附力大小，获得了动态过程吸附力随冲击高度变化曲线，发现升力板下壁面主涡结构的存在和运动影响升力板静压沿程分布。在无量纲冲击高度小于3时，吸附力曲线斜率增大，吸附作用增加，并对比稳态结果，发现动态过程吸附力要大于稳态过程，在无量纲高度为1.5时，两者相差26%。流场响应迟滞是造成稳态、动态过程结果差异的原因。
침대단거/수직기강（STOVL）비행기동태기비과정，채용기우뢰낙시균방정적표준k-ε모형수치모의STOVL비행기기동류장，연구STOVL비행기흡부력대소，획득료동태과정흡부력수충격고도변화곡선，발현승력판하벽면주와결구적존재화운동영향승력판정압연정분포。재무량강충격고도소우3시，흡부력곡선사솔증대，흡부작용증가，병대비은태결과，발현동태과정흡부력요대우은태과정，재무량강고도위1.5시，량자상차26%。류장향응지체시조성은태、동태과정결과차이적원인。
For short take off and vertical landing aircraft(STOVL)dynamic taking off process with lift loss, Reynolds-averaged turbulence k-εmodel is employed to calculate STOVL aircraft flow field. Curve of dynamic suckdown is acquired. The lift plate wall pressure is influenced by the formation and movement of the main vor?tex. The slope of suckdown curve increases at dimensionless impinging height lower than three ,and suckdown is also augment. Suckdown in dynamic process is greater than steady status,at dimensionless height 1.5,nearly 26%difference. The flow field response delay is the cause of the difference.