Failure of Elevator Hinge Pins of Pilotless Target Aircraft

Raghuram, AC and Krishnan, RV and Radhakrishnan, S and Venkataswamy, MA and Ramachandran, V (1989) Failure of Elevator Hinge Pins of Pilotless Target Aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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During refurbishing of a pilotless target aircraft after a sortie, the hinge pins which connect the elevator to a connecting flange was found broken on both port and starboard sides. These pins had been cadmium plated. Electron fractography indicated that the failure of the pins was due to hydrogen embrittlement. Also the hinge pins did not conform to material specifications.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: pilotless target aircraft, Elevator, Hinge pin, Connecting flange, Cadmium plating, Hydrogen embrittlement
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Smt Bhagya Rekha KA
Date Deposited: 05 Jul 2012 10:21
Last Modified: 05 Jul 2012 10:21

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