Development Test for Flexible PTO Shaft Made of Ti Alloy for Aircraft

Ti 합금을 이용한 항공기용 Flexible PTO 샤프트 개발 시험

  • Received : 2016.04.15
  • Accepted : 2016.06.15
  • Published : 2016.08.01


The PTO (Power Take-Off) shaft for aircraft, with welded construction using multiple thin membranes, was developed in the 1950s to improve the elasticity of the part. As it is lightweight, stable at high speeds, and has good flexibility, it is used in most of the fighter aircraft. It connects the AMAD (aircraft mounted accessory drive) gearbox with the EMAD (engine mounted accessory drive) gearbox and transmits the rotational power between them. It operates in the high speed range of 10,000-18,000 rpm. In this study, the safety of the PTO shaft made of Ti alloy was investigated using finite element analysis, and the ability to transmit power was demonstrated through a high-cycle fatigue test conducted in a laboratory. Further, the life of the ball joints of the aircraft under high-cycle fatigue test conditions was predicted, and the wear characteristics were analyzed.


PTO;Flexible Shaft;High Cycle Fatigue Test;Ball Joint;Membrane


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Cited by

  1. Experimental Investigation on Torsional Analysis and Fracture of Tripod Shaft for High-speed Train vol.40, pp.11, 2016,


Grant : 소재부품기술기반혁신

Supported by : 한국기계연구원