| TANG Li-jun 1 ，ZHU Ming-ming 1 ，WANG Huan 2.Test Study on Water Spraying Characteristics of Airworthiness Rain Ingestion Tester for A Turboshaft Engine[J].航空发动机,2023,49(1):158-162 |
| Test Study on Water Spraying Characteristics of Airworthiness Rain Ingestion Tester for A Turboshaft Engine |
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| Key Words:turboshaft engine airworthiness rain ingestion tester nozzles vortex nozzle water spraying characteristics |
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| Abstract:In order to develop an airworthiness rain ingestion tester that meet the requirements of the Airworthiness Regulations for
Aeroengine（CCAR-33R2）for a turboshaft engine, water spraying characteristics of vortex nozzle，centrifugal nozzle and plain orifice was
studied using laser particle size analyzer. The results show that the measurement results of laser particle size analyzer exhibit good stability;
the median or average diameter of rain droplets of the centrifugal nozzle is 500~1500 μm, no raindrops generated when testing the direct jet
nozzle, both of the water spraying characteristics show large deviation from the criteria of the airworthiness rain ingestion regulations，
which is 2660 μm; while the average diameter of rain droplets of the vortex nozzle is 2077~3365 μm, which deviates little from the criteria
of the airworthiness rain ingestion regulations，and the rain droplet size decreases with the increase of the water feed pressure and the dis-
tance of the measuring cross-section. The results provide basic data support for the development of the rotorcraft engine rain ingestion tes?
ter，and also provide reference for development of airworthiness rain ingestion tester for other types of aeroengine. |
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