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http://dx.doi.org/10.9766/KIMST.2015.18.4.343

A Study of the Lug Fracture Improvement for Composite Leaf Spring Landing Gear  

Shim, Daisung (Sacheon Center, Defense Agency for Technology and Quality)
Jang, Deakhyeon (UAV Team, Korea Aerospace Industries, Ltd.)
Park, Chahwan (Policy Planning Department, Defense Agency for Technology and Quality)
Kim, Jounghun (Sacheon Center, Defense Agency for Technology and Quality)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.18, no.4, 2015 , pp. 343-349 More about this Journal
Abstract
This is a study for the improvement of the fractured lug structure that connects the landing gear to the fuselage of the aircraft using the composite leaf spring landing gear. The lug surface was analyzed to find out the cause of fracture. The lug was destroyed by the crack initiation and propagation under the repeated stresses. The frictional wears of the lug structure were proceeded and that affected adversely to the crack. Also, the square protrusion of the lug has a weak shape to bring about stress concentration. The design changes were conducted and the test was performed to verify changed design results.
Keywords
Composite Leaf Spring; Lug; Fractured Surfaces; Wear; Design Change;
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