重复使用运载器气动性能CFD研究

CFD Study of Aerodynamic Performance of Reusable Launch Vehicle

应用CFD方法研究了两级重复使用运载器上升段和轨道器再入段的气动性能。结果表明:轨道器升阻性能、纵向静稳定性能、横向静稳定性能及亚、跨声速段航向静稳定性能均满足气动总体设计基本要求,其它性能有待改进;运载器上升段气动性能与一般运载火箭类似,只是升阻比偏高,使用摆动喷管后可以保证纵向和横向稳定性。

The aerodynamic performance of a tandem two-stage-to-orbit （TSTO） reusable launch vehicle （RLV） and its reentry orbiter are studied through employing computational fluid dynamic （CFD） method. The result shows that： the orbiter＇s property about lift-drag and longi- tudinal-lateral-directional stability can satisfy the basic requirement, and other aerodynamic properties should be improved; the aerodynamic performance of the combination body of launch vehicle is similar to traditional launch vehicle except for higher lift-drag ratio, and the longitudinal and directional instability can be controlled effectively by swing nozzles.