CAJ | 학술논문

基于超声速双向飞翼构型，采用CFD方法进行阻力计算，采用F-BOOM程序进行声爆计算，研究翼型、平面形状和EFCE激波阻力优化算法对双向飞翼激波阻力和声爆的影响。计算结果表明，平底构型可以明显降低双向飞翼超声速客机的超声速巡航的声爆，却很大程度上增加了巡航阻力，而对称构型却恰好相反；细长的平面几何形状对降低双向飞翼激波阻力和声爆都有作用，尤其对降低对称构型的声爆效果明显；EFCE激波阻力优化算法对降低双向飞翼激波阻力有明显作用，但同时会带来声爆方面的不利影响。因此，超声速客机的减阻设计和低声爆设计需要进行权衡研究。
기우초성속쌍향비익구형，채용CFD방법진행조력계산，채용F-BOOM정서진행성폭계산，연구익형、평면형상화EFCE격파조력우화산법대쌍향비익격파조력화성폭적영향。계산결과표명，평저구형가이명현강저쌍향비익초성속객궤적초성속순항적성폭，각흔대정도상증가료순항조력，이대칭구형각흡호상반；세장적평면궤하형상대강저쌍향비익격파조력화성폭도유작용，우기대강저대칭구형적성폭효과명현；EFCE격파조력우화산법대강저쌍향비익격파조력유명현작용，단동시회대래성폭방면적불리영향。인차，초성속객궤적감조설계화저성폭설계수요진행권형연구。
Based on SBiDir-FW ( supersonic bi-directional flying wing ) , CFD ( Computational Fluid Dynamics ) method is used to calculate the drag and F-BOOM method is applied to compute the sonic boom;this study focuses on how the airfoil, flat shape and EFCE shock wave drag optimization algorithm affect the drag and sonic boom of SBiDir-FW. The results and their analysis show preliminarily that: ( 1 ) flat bottom configuration can reduce the cruise sonic boom of SBiDir-FW remarkably, but it greatly increases the cruising drag, while the opposite phenome-non can be detected in symmetrical configuration;(2)slender flat shape can reduce drag and sonic boom of SBiDir-FW, especially for reducing the sonic boom of symmetrical configuration;(3)EFCE shock wave drag optimization algorithm can reduce the shock wave drag of SBiDir-FW obviously, but will also bring adversely effect on sonic boom. Therefore, the balance should be weighed when considering the design of low drag and low sonic boom for supersonic aircraft.