Fatigue Safe Life Evaluation of Rotating Swashplate of Helicopter Main Rotor Control System

헬리콥터 주로터 조종 시스템 회전형 스와시플레이트 피로 안전수명 평가

  • Received : 2011.04.12
  • Accepted : 2011.11.24
  • Published : 2012.02.01


The main rotor control system is an important structural part of a helicopter that manages the thrust and control force of the helicopter. The main rotor control system consists of a swashplate assembly, scissor assembly, pitch rod assembly, guide, etc. The main rotor control system must endure various loads, such as the thrust and control force, and must meet the optimized fatigue safety life. The rotating swashplate is an important structure influenced by the pitch rod load and rotating scissor load. In this paper, the accuracy of a result about the rotating swashplate part of the main rotor control system is proven through comparison between fatigue test and FEM results. Based on this result, we estimate the lifetime and deduce the fatigue safe lifetime.


Fatigue Safe Life;Fatigue Test;Main Rotor Control;Pitch Rod Assy;Rotating Swashplate


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