航空工程进展2025，Vol.16Issue(3)：206-210,5.DOI:10.16615/j.cnki.1674-8190.2025.03.22
某型直升机单发停车特情处置及故障分析
Special situation disposal and fault analysis of single engine parking for a certain type of helicopter
刘昊阳 1史立军 1徐云山 2王之瑞 2蔡英楠1
作者信息
- 1. 中航工业哈尔滨飞机工业集团有限责任公司,哈尔滨 150066
- 2. 中国人民解放军95966部队,哈尔滨 150066
- 折叠
摘要
Abstract
During the flight test of a certain type of helicopter,there was an abnormal parking fault of the left engine in the air.The pilot landed safely according to the special situation handling method,ensuring the safety of the air-craft.After landing,a static inspection was conducted on the faulty engine and no abnormalities were found.Subse-quently,the entire aircraft was powered on and ground driven to check that the left engine was working normally.After data interpretation and analysis,it was determined that the abnormal decrease in P3 pressure caused an abnor-mal decrease in the limit value of the oil to gas ratio,resulting in fuel limitation and engine shutdown.This article analyzes the single engine parking fault in the air,describes the special situation handling methods after single en-gine parking from the perspective of the flight test team,analyzes that there is movable metal surplus in the P3 pres-sure sensor of the helicopter,which causes a short circuit between the power supply of the conditioning circuit and the ground in short time during the flight of the helicopter,and causes the voltage in the electronic controller to be pulled down,causes P3 signal abnormal fall,and eventually leads to the helicopter in the air without warning abnor-mal single stop,and proposes improvement measures and suggestions,providing ideas for model design and special situation fault analysis.关键词
直升机/单发停车/机理分析/改进意见/P3传感器Key words
helicopter/single engine parking/mechanism analysis/improvement suggestions/P3 sensor分类
航空航天引用本文复制引用
刘昊阳,史立军,徐云山,王之瑞,蔡英楠..某型直升机单发停车特情处置及故障分析[J].航空工程进展,2025,16(3):206-210,5.
