基于实战使用的涡轴发动机空中起动飞行试验

以涡轴发动机实战使用中空中紧急起动相关技术指标和特情处置措施验证为目的,设计了贴近实战使用特征的发动机空中起动试飞方案,并以某涡轴发动机设计定型试飞为依托,进行了不同飞行工况下的飞行试验验证和数据分析研究。结果表明:该空中起动试飞方案合理可行,能够最大程度的贴近部队实战使用的技术特征,满足对发动机起动高度包线、起动时间等研制总要求规定的技术指标验证需求;试飞结果表明该型涡轴发动机4000m以上高度停车至再起动期间直升机平均下滑高度约为670m,平均停车时间约为185s。该试飞方法和数据结果可为部队实战使用过程中空中遭遇停车的紧急处置提供支持和参考。

Flight test for turbo-shaft engine air-startingcharacteristic based on operational tasks

An air-starting flight test scheme of the turbo-shaft engine was designed to evaluate the urgent air-starting characteristics of turbo-shaft engine and the corresponding disposal measures in the situation of the engine accidental shutdown possibly encountered during combat flight. The air-starting flight test scheme was applied to the design appraisal flight test of a turbo-shaft engine in several different flight conditions. Results showed that the designed flight test scheme was reasonable and feasible, providing an effective way to evaluate the air-starting ability of turbo-shaft engine from the perspective of practical combating use. Above 4000m altitude, the helicopter average declining altitude was 670m and average engine-shutdown time was 185s in the engine restart processes. The flight test scheme and results are useful and provide references for the military pilots to deal with possible engine accidental shutdown.