涡扇发动机装机条件雨天环境使用能力试验验证技术

为系统验证国产小涵道比涡扇发动机雨天环境下使用能力,以装机条件下该型动力装置为研究对象,采用装机条件下发动机吞水试验、模拟雨天滑跑溅水试验以及雨中适应性试飞3项试验研究了该动力装置雨天环境使用能力。经试验发现,发动机在装机吞水条件下发生喘振,在溅水试验和雨中适应性试飞过程中工作正常。试验结果表明,所设计的发动机雨天环境验证技术可以有效识别该型发动机吞水后喘振故障,系统验证发动机雨天环境使用能力。

A Test of Operating Capability for Turbofan Engine in Rainy Weather Environment under Conditions of Installation

In order to systematically verify the ability to a domestic small bypass ratio turbofan engine in rainy days in application, a subject of study with an aero-engine being installed is made. And an adaption of test flight for three test systems is performed respectively, i.e. an engine water swallowing test with installed conditions, a simulated slippery running splash test in rainy day, and an adaptability of test flight in rain. In the test there is involved some surge under the conditions of installed water swallowing , and the engine is operating normally in the process of the splash test and the adaptability of test flight in the rain. The test results indicate that the designed engine rain environment verification technology can effectively identify the surge risk of engine after water swallowing, and systematically verify the engine''s ability to use in the rainy day environment.