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To investigate engine response characteristics under different levels of failure, fault simulation tests are required. By injecting varying levels of fault signals in both ground test conditions and actual flight environments, the variation patterns of engine response parameters (such as TQ, N1, N2, ITT) and helicopter states were analyzed. The results indicate that the impact of different failure levels on engine performance varies significantly: Level 1 failure has no effect on the engine and helicopter operating states; Level 2 failure causes slower engine response without affecting normal control of the engine and helicopter; Level 3 failure results in locked parameters of the faulty engine. After the faulty engine enters backup mode, it resumes response but with a slightly slower response speed.

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Helicopter Engine Failure Simulation Flight Test and Response Characteristic Analysis

  • 会议论文

  • 发表日期：

    2026年

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  • Gao Qiang,
  • Liu Tengyuan,
  • Luo Daoguo,
  • Gao Jiaxin,
  • Wu Zhiyao

摘要

To investigate engine response characteristics under different levels of failure, fault simulation tests are required. By injecting varying levels of fault signals in both ground test conditions and actual flight environments, the variation patterns of engine response parameters (such as TQ, N1, N2, ITT) and helicopter states were analyzed. The results indicate that the impact of different failure levels on engine performance varies significantly: Level 1 failure has no effect on the engine and helicopter operating states; Level 2 failure causes slower engine response without affecting normal control of the engine and helicopter; Level 3 failure results in locked parameters of the faulty engine. After the faulty engine enters backup mode, it resumes response but with a slightly slower response speed.