冲压空气涡轮气动设计及其规律研究  

Study on aerodynamic design and rule of ram air turbine

作　　者：唐宜文 钟易成[1] Tang Yiwen;Zhong Yicheng(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Jiangsu Nanjing,210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《机械设计与制造工程》2023年第11期54-57,共4页Machine Design and Manufacturing Engineering

摘　　要：冲压空气涡轮是飞机的应急动力装置。依据叶素动量理论对冲压空气涡轮叶片进行气动设计,对设计的冲压空气涡轮进行计算流体力学仿真,研究了来流速度、安装角与冲压空气涡轮输出功率的关系,不同偏航角对冲压空气涡轮性能的影响及评估方法,绘制冲压空气涡轮输出功率随来流速度、安装角的变化曲线。研究发现,偏航角小于15°时,冲压空气涡轮的性能下降满足cos 3γ评价法则,但随着偏航角的增大,这个法则不再适用。Ram air turbine is the emergency power device of aircraft.According to the theory of blade element momentum(BEM),the ramjet air turbine blade is designed aerodynamic,and the parametric design of the blade is realized by C++programming.The flow simulation of the designed ram air turbine is carried out,the matching problem of speed and pitch angle,the influence of different yaw angle on ram air turbine performance and evaluation method are studied,and the curve of the change of output power with the installation angle of incoming flow speed is drawn.It is found that when the yaw angle is less than 15°,the performance degradation law of air turbine meets the evaluation rule,but with the gradual increase of yaw angle,this rule is gradually not applicable.

关 键 词：飞机 冲压空气涡轮 气动设计 计算流体力学 影响规律 

分 类 号：V211.4[航空宇航科学与技术—航空宇航推进理论与工程]