种可减小气动干扰不利影响的直升机气动布局优化方法

• Format: Patent
• Language: Chinese
• Published: 08.05.2018
• Subjects: CALCULATING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明公开了种可减小气动干扰不利影响的直升机气动布局优化方法。该方法针对风洞试验及CFD方法的不足，基于离散涡方法和面元法建立直升机的耦合气动干扰高精度分析模型，从而可以不通过风洞试验，只利用仿真计算就可考虑直升机气动干扰的影响，并相较于CFD大大降低了仿真模型对计算资源的需求，缩短了计算时间。为进步减小计算量及寻优空间，通过参数化方法建立直升机机身外形的参数化模型并采用基于代理模型的组合优化方法，从而得到最优的直升机气动外形及布局，达到减小气动干扰以提高直升机飞行特性的目的。可以应用于直升机概念设计阶段以改善直升机飞行性能及配平、操稳特性。 The present invention discloses a helicopter aerodynamic layout optimization method capable of reducing the adverse effect of aerodynamic interference. According to the method, aiming at the defects of a wind tunnel test and a CFD method and based on a discrete vortex method and a surface element method, a coupled aerodynamic interference high-precision analysis model for a helicopter is set up, so that the influence of aerodynamic interference on the helicopter can be considered only by simulating calculation without carrying out the wind tunnel test; compared with the CFD method, the method has the advantages of greatly reducing the requirements of a simulation model for computing resources and shortening computing time. In order to furt