为了检验某型飞机RAT发电机在自然结冰环境下能否正常释放和供电,对该RAT发电机自然结冰试飞进行研究。首先,阐述RAT发电机进行自然结冰试飞的原因、目的以及民用航空标准对自然结冰环境的要求;其次,介绍RAT发电机自然结冰的试飞方法;最后,对试飞结果进行分析。结果表明:RAT发电机自然结冰环境条件满足适航规章要求,能够在可预期的自然结冰环境下实现手动释放功能且供电功能正常。 In order to test whether a certain type of aircraft RAT generator can normally release and supply electricity in the natural icing environment, the natural icing test of the RAT generator was studied. First of all, the reasons and purposes of natural icing test of RAT generator and its requirements for natural icing environment are described. Secondly, the test method of natural icing of RAT generator is introduced. Finally, the test results are analyzed. The results show that the natural icing environmental conditions of RAT generators meet the requirements of airworthiness regulations, and the manual release function can be realized under the expected natural icing environment and the power supply function is normal.