着舰路径对舰载直升机飞行特性的影响  

The Influence of Landing Path on the Flight Characteristics for a Shipborne Helicopter

作　　者：赵俊[1] 马东林 刘纪福[1] 罗骏[1] ZHAO Jun;MA Donglin;LIU Jifu;LUO Jun(Science and Technology on Rotorcraft Aeromechanics Laboratory China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所直升机旋翼动力学重点实验室,江西景德镇333001

出　　处：《直升机技术》2021年第4期18-24,31,共8页Helicopter Technique

摘　　要：开发了一套能够耦合舰船流场数据的直升机飞行动力学模型。其中,采用DES方法以获得高精度非定常舰船流场,并基于“单向耦合”思想构建了CFD向飞行力学模型的数据传递策略,并以SFS2舰船模型和UH-60A直升机组合为算例验证了方法的有效性。然后,以SFS2/UH-60A组合为研究对象,从直升机平衡特性的角度分析了着舰过程中直升机在典型位置处的操纵余量变化规律。在此基础上,进一步分析了不同着舰路径下直升机的风限图特征。研究结果显示:对于常规直升机,脚蹬余量往往是限制飞行员着舰操作的重要因素,尤其是在大侧风情形下;对于右旋直升机,从舰船背风侧(即左舷)着舰能够获得更大的飞行安全边界。A helicopter flight dynamics model,which could be coupled with ship airwake date,was developed.In the method,the DES method was used to obtain high-precision flowfield data;a strategy which could transmit CFD data to the flight dynamics model was established based on the“one-way”coupling idea.The accuracy of the method was verified by the calculation of SFS2/UH-60A solution.Then,the SFS2 ship model and UH-60A were chosen as a combination to investigate the control margins of helicopter at typical position from the aspect of trimmed characteristics.Furthermore,the influence of landing path on the Ship Helicopter Operating Limits(SHOL)was also investigated.The results showed that the pedal margin was the key limiting factor for handling helicopter during landing process,especially in the crosswind condition.Landing a helicopter of counter-clockwise rotation from the portside could provide pilot more wider boundary for the Ship Helicopter Operating Limits.

关 键 词：直升机 舰船流场 单向耦合 操纵余量 风限图 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]