直升机旋翼与舰船复合流场试验方法研究

直升机旋翼诱导流与舰船空气尾流叠加后形成复合流场,对直升机舰上起降时的操纵响应及飞行安全有很大的影响。介绍了复合流场的风洞试验方法,包括试验的基本原则、旋翼及舰船模型的设计方法和参数、模型的安装方案及试验状态,并给出了部分试验结果及其分析。结果表明,旋翼诱导速度改变了舰船尾流分布,打开机库门可减弱旋翼的影响。

Research on Test Approach to Complex Wake Between the Helicopter Rotor Induced Flow and the Warship Airwake

The superposition between the helicopter rotor induced flow and the warship airwake leads to the formation of the complex wake,which affects the helicopter's control response and flight safety during take-off and landing from a warship.This paper presents the test approach to the complex wake wind tunnel,including(1) basic principles of the test;(2) design method and parameters of rotor and warship models;(3) installation scheme and test conditions of the model;(4) some test results and analyses.The test results show that the rotor induced flow changes the warship airwake and the influence of the rotor can be reduced by opening the hangar door.