Assessment of converting approach to efficient design of micro-turboprop engines

作     者：Hamed GOLCHIN Fathollah OMMI Zoheir SABOOHI Hamed GOLCHIN;Fathollah OMMI;Zoheir SABOOHI

作者机构：Department of Mechanical EngineeringTarbiat Modares UniversityTehran 14115-111Iran Aerospace Research Institute(ARI)Ministry of ScienceResearchand TechnologyTehran 14115-111Iran 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2020年第33卷第2期

页      面：572-588页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：Wren Power Systems Ltd 

主　　题：Axial turbine Blisk Gas generators Micro-turboprop Power unit 

摘      要：The design,manufacture and experiment of a shaft power unit for converting a microturbojet engine to a micro-turboprop in the class of less than 20 kW with the aim of obtaining maximum shaft power were described in this *** this purpose,a Wren 100 micro-turbojet engine was used as the gas generator,and the specifications of its outflow were *** optimal configuration of the inter-stage diffuser,which was an annular S-type diffuser,was selected based on its small total pressure drop and outlet flow *** power turbine was a single stage axial turbine that was designed based on the fixed nozzle angle assumption without any taper or twist in its *** turbine rotor was a bladed disk(Blisk)in which its unique blade profiles were designed based on the Wilson ***,the shaft power unit was completed by designing and manufacturing an exhaust complex and ***,the micro-turboprop engine was tested with an overloading *** results show a significant increase in the extracted power,an acceptable efficiency of the power turbine,and a significant reduction in the Specific Fuel Consumption(SFC)compared to other engines that use similar gas generators.