Research on Power Turbine Overrun Fault of a Certain Type of Turboshaft Engine
In view of the over-limit failure of a certain turboshaft engine's power turbine(Npt),the engine control theory analysis and test verification are combined to reproduce and eliminate the over-limit failure of the turboshaft engine's power turbine speed Npt.In view of the defects of the engine ground experiment control system,this paper,through experimental verification and combining with the accumulation of expert experience,respectively gives preventive measures and suggestions from four aspects:improving the sampling frequency of the data acquisition protection system,improving the starting mechanism of the data acquisition protection system,improving the design of the data acquisition protection system,and strengthening training,so as to avoid serious over-limit in the engine ground test.At the same time,the elimination method can provide reference for solving similar engine faults.
Turboshaft enginePower turbineNpt out of limitRecommended measure
NETL
NSTL
万方数据
