Design and computational study of waverider configuration with high performance
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摘要: 采用数值模拟方法研究在设计点(马赫数6,迎角0°)锥导乘波体气动外形的设计方法及其基本气动特性,以及在非设计点时该乘波体的气动特性,即各个气动系数随迎角和马赫数的变化特性.研究表明:基于无粘锥形流的乘波体气动外形的反设计方法是成功的;在设计点附近选取合适的半基准圆锥激波角并考虑粘性影响时,可得到乘波体最大升阻比为3.36;给出了采用这一布局的单级入轨运载器的可行的飞行控制方案;分析提出了进一步提高该乘波体气动布局升阻比的有效途径.Abstract: The design method and basic aerodynamic characteristics were studied for cone-derived waverider at Mach 6 and attack angle 0. Off-design performances of the designed waverider were also discussed, namely lift, drag and lift-drag-ratio changing with Mach number and attack angle. All the research works were finished by numerical simulation method. Results show that: the inverse-design method for the waverider configuration is successful based on inviscid conical shock wave. The biggest lift-drag ratio 3.36 considering viscous effects is obtained at Mach 6 when a proper base conical shock wave angle is chosen. A feasible flight control scheme is presented for the SSTO (single-stage-to-orbit) vehicle adopting this configuration. The favorable method of improving the lift-drag ratio of the figuration is brought forward.
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