Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study on Variable Systems for Compressor and Turbine and its Control Scheme

압축기 정익, 터빈 노즐 가변 메카니즘 및 제어기법 연구

  • Kim, Sangjo (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Donghyun (Department of Aerospace Engineering, Pusan National University) ;
  • Bae, Kyoungwook (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Dae-il (School of Mechanical Engineering, Pusan National University) ;
  • Son, Changmin (School of Mechanical Engineering, Pusan National University) ;
  • Kim, Kuisoon (Department of Aerospace Engineering, Pusan National University) ;
  • Lee, Daewoo (Department of Aerospace Engineering, Pusan National University) ;
  • Go, Jeungsang (School of Mechanical Engineering, Pusan National University) ;
  • Choi, Dong-Whan (Department of Aerospace Engineering, Inha University) ;
  • Kim, Myungho (The 4th R&D Institute, Agency for Defense Development) ;
  • Min, Seongki (The 4th R&D Institute, Agency for Defense Development)
  • Received : 2015.07.01
  • Accepted : 2015.08.21
  • Published : 2015.10.01
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Abstract

In case of a gas turbine engine for supersonic operation, the engine have a wide range of operating inlet mass flow rate and required high performance such as thrust and fuel consumption. Therefore, variable system and its optimal control logic are essentially needed. In this work, a method for performance prediction of a gas turbine engine with variable system compressor and its control scheme were developed. Conceptual design of compact acuation system for the operation of the variable system was also conducted. The performance of a low-bypass ratio mixed flow turbofan engine was analyzed, and it was observed that the surge margin of the engine is improved at off-design condition by applying the control scheme.

아음속에서 초음속까지 운용되어야 하는 초음속 터빈엔진의 경우, 엔진 운용 공기량이 범위가 넓고 추력 및 연료소모율 등의 엔진 성능에 대해 요구조건이 높으므로 가변시스템 및 이를 제어하기 위한 최적의 제어로직 개발이 반드시 필요하다. 본 연구에서는 압축기 가변 시스템이 적용된 가스터빈 성능해석 모델 및 제어기법을 개발하였다. 그리고 터빈 노즐 가변에 따른 엔진 운용 특성을 분석하였다. 또한 가변 시스템을 구동하는 액추에이터에 대한 개념 설계를 수행 하였다. 저바이패스비 혼합흐름 터보팬 엔진에 대한 탈설계점에서의 성능해석을 수행하였으며, 제어기법을 적용하여 탈설계점에서의 서지마진을 확보할 수 있었다.

Keywords

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