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http://dx.doi.org/10.5762/KAIS.2019.20.10.459

The Study on Improvement about Structural Integrity of Main Landing Gear for Rotorcraft  

Jang, Min-Uk (Defense Agency for Technology and Quality)
Lee, Yoon-Woo (Defense Agency for Technology and Quality)
Seo, Young-Jin (Defense Agency for Technology and Quality)
Ji, Sang-Yong (Defense Agency for Technology and Quality)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.10, 2019 , pp. 459-467 More about this Journal
Abstract
The landing gear is a component that requires a high degree of safety to protect the lives of rotary-wing aircraft and boarding personnel, absorbing the impact on transfer/landing and supporting the fuselage during taxiing and mooring on the ground. In particular, the wheel landing gear supporting the aircraft fuselage absorbs most of the shock from the ground through the shock absorber and tires. This ensures the safety of the pilot on board the aircraft and satisfies the operational capability of the soldiers between missions. During the operation of a rotary-wing aircraft, a number of piston pins, which are a component of the right main wheel landing gear, were found to be broken. Therefore, this study examined the root cause of the piston pin crack phenomenon found in the main wheel landing gear. For this purpose, various causes were identified from fracture surface analysis of a flight test. In particular, the possibility of cracking was analyzed based on the influence on the fastening torque with the drag beam component applied to the piston pin at the time of development. This ensures the fatigue life and structural integrity.
Keywords
Rotary-Wing Aircraft; Main Landing Gear; Piston Pin; Structural Analysis; Fatigue;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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