火箭推进2017，Vol.43Issue(5)：20-27,44,9.
前缘水平投影可控的乘波体设计方法研究
Design method of waverider with controlled horizontal projection of leading edge
摘要
Abstract
A design method of waverider with controlled horizontal projection of leading edge is proposed in combination with streamline tracing technique and blend function of osculating plane, with which the waveriders with hyper elliptic horizontal projection of leading edge ( Waverider-F) and with hyper elliptic leading edge to hyper elliptic trailing edge transition ( Waverider-FT ) are de-signed. Both of them are of high volume ratio and their corresponding axial projection of leading edges is approximate to cosine curve. The effectiveness of the design method was validated by numerical sim-ulation. For design point, Waverider-F has good waverider characteristics and keeps the feature of ref-erence flow field. The forepart of Waverider-FT is a complete waverider, but the flow field is transfig-ured by both sides′induced shock of rear part and exists high pressure region. Their waverider charac-teristics are also good at relay point. Moreover, they are of high lift-drag ratio and pre-compression ef-ficiency. Under inviscid condition, their life-drag ratios are 3. 46 and 2. 88 for design point. In com-parison with Waverider-F, the lift force, drag force and exit compression ratio of Waverider-FT are significantly increased, and the lift-drag ratio, pitching moment and exit total pressure recovery coef-ficient are decreased. Under viscous condition, the lift-drag ratio at the design point decreases from 2. 91 to 2. 41 , its corresponding exit total pressure recovery coefficient reduces 5. 8%.关键词
乘波体/投影形状/流线追踪/混合函数/密切面Key words
waverider/projection shape/streamline tracing/blend function/osculating plane分类
航空航天引用本文复制引用
李永洲,李光熙,张堃元,孙迪..前缘水平投影可控的乘波体设计方法研究[J].火箭推进,2017,43(5):20-27,44,9.基金项目
国家自然科学基金 (11702205) （11702205）
