| Citation: | FAN Xiaoqian, WANG Yangbing, LIU Yiming, et al. Effect of throat size of turbine guide on performance of gas turbine starter[J]. Journal of Aerospace Power, 2024, 39（9）：20230775 doi: 10.13224/j.cnki.jasp.20230775
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A gas turbine guide on a gas turbine starter was taken as the research object, and the effects of throat size of gas turbine guide on the performance of gas turbine starter and components were studied using experimental methods and numerical simulation. The results of experimental research on A, B, C types of gas turbine guide (average outer diameter of the throat was 111.27, 111.94, 112.34 mm) indicated: type C′ starter compared with type A′ starter, normal starting time became shorter by 14%, output shaft disengagement speed of lose efficacy starting increased by 7.1%, maximum output power increased by 11.6%, the performance of starter was improved significantly. Numerical research results indicated: type C″ compared with type A″, the flow rate of turbine stage increased by 3.6%, maximum output power of power turbine increased by 12.2%. The increase in power turbine power was attributed to the combined effect of increased flow rate, increased temperature and increased temperature drop. In summary, the outer diameter of gas turbine guide throat changed the matching point of entire gas turbine by affecting the performance of turbine stage, then the overall performance exhibited a certain degree of dispersion.
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