转换式高速直升机RD15方案

 首先对目前各种类型的高速直升机进行了分析,在此基础上提出了一种旋翼/机翼转换式高速方案;然后对此方案的旋翼系统的气动特性和关键技术——直升机/飞机模式转换过程中盘翼的仰角、桨叶的长度、转速以及桨距等参数的变化进行了理论和试验研究,提出了高速直升机RD15的总体方案,并设计了直升机/飞机模式转换过程。计算表明,该方案在直升机/飞机模式相互转化过程中升力、功率和操纵的改变能够实现平滑连续并保持操稳性。

The Scheme of High-Speed Helicopter RD15

The scheme of High-Speed Helicopter RD15 is presented basded on the research of the existing schemes and their key technology . Besides calculation of the diskwing/rotor system and transfer process between the helicopter mode and the airplane mode, experiments are carried out to verify the calculation method and the feasibility of the scheme. The test model of diskwing/rotor and a test-rig are specially designed and built on this purpose. The lift and power are measured for different wind speeds, rotating speeds, and the angles of attack of the diskwing/rotor. It is confident that the mode transfer process is available since the changes of the foundamental parameters, such as the pitch angle of diskwing, the diameter, the collective pitch and the rotating speed of the rotor, go on smoothly and continuously.