Aeronautics and astronautics – Landing gear – Skids
Patent
1993-11-05
1995-10-31
Barefoot, Galen L.
Aeronautics and astronautics
Landing gear
Skids
B64C 2552
Patent
active
054622425
ABSTRACT:
An improved helicopter landing gear assembly to substantially increase useful service life. The crosstubes are constructed of a material that allows use of thicker crosstubes thereby reducing the operating stress in the crosstubes and helping to increase the fatigue life, while at the same time preserving the required energy absorption characteristics. The inside and outside of the crosstubes are shot peened to help increase the fatigue life. The crosstubes are formed in an unstable temper condition thereby reducing the stress that is induced into the part during formation, and thus helping to increase the fatigue life. The straps are connected to the crosstubes by fasteners located at the sides of the straps and closer to the neutral bending axis of the crosstube so that the fasteners and the fastener holes are subjected to lower stress levels. The combination of these improvements results in a substantially increased life of the landing gear assembly.
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Collins Bobby A.
Grimes Glenn R.
Reddy Dharam J.
Barefoot Galen L.
Bell Helicopter Textron Inc.
Ciccarelli Max
Felsman Robert A.
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