直升机防冰技术研究

根据直升机的自然结冰条件，研究了云层液态水含量、水珠平均有效直径和大气温度等要素对直升机结冰的影响；同时论述了直升机旋翼无防冰设备民政部下各要素对直升机性能的影响，以及具备防冰能力的直升机必须的结冰试验项目与内容；根据国外直升机结冰试验结果，提出了旋翼防冰设计应考虑的因素，可供直升机防水设计和试验时参考。

Research of Helicopter Icing Protection

According to the natural icing condition of the helicopter, this paper researches the influence of some parameters on helicopter icing, such as the cloud liquid water content, the mean effective diameter of the cloud droplets,and the ambient air temperature etc.It also deals with the influence on the helicopter performance without rotor icing protection instrument, and the required icing test items and contents of the helicopter with icing protection capacity.By the analysing foreign icing test result, the considered design factors of rotor icing protection are presented, which are used as a reference to helicopter icing protection design and test.