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Damage Tolerance of Integral Structure in RotorcraftThe rotorcraft industry has rapidly implemented integral structures into aircraft to benefit from the weight and cost advantages over traditionally riveted structure. The cost to manufacture an integral structure, where the entire component is machined from a single plate of material, is about one-fifth that of a riveted structure. Furthermore, the integral structure can weigh only one-half that of a riveted structure through optimal design of stiffening structure and part reduction. Finally, inspection and repair of damage in the field can be less costly than riveted structure. There are no rivet heads to inspect under, reducing inspection time, and damage can be removed or patched readily without altering the primary structure, reducing replacement or repair costs. In this paper, the authors will investigate the damage tolerance implications of fielding an integral structure manufactured from thick plate aluminum.
Document ID
20040000795
Acquisition Source
Langley Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Forth, Scott C.
(NASA Langley Research Center Hampton, VA, United States)
Urban, Michael R.
(Sikorsky Aircraft Stratford, CT, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Aircraft Design, Testing And Performance
Meeting Information
Meeting: Damage Tolerance of Integral Structure in Rotorcraft
Location: Corfu
Country: Greece
Start Date: July 25, 2003
End Date: July 29, 2003
Sponsors: International Conference on Computational and Engineering and Sciences
Funding Number(s)
OTHER: RTA 706-62-11-50
Distribution Limits
Public
Copyright
Public Use Permitted.
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