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Leading edge protection for composite bladesA laminated filament composite structure, such as an airfoil for use in an environment in which it is subjected to both foreign object impact and bending is provided with improved leading edge protection. At least one fine wire mesh layer is partially bonded within the composite structure along its neutral bending axis. A portion of the wire mesh layer extends beyond the neutral bending axis and partially around the leading edge where it is bonded to the outer periphery of the primary composite structure. The wire mesh is clad with a metal such as nickel to provide an improved leading edge protective device which is firmly anchored within the composite structure. Also described is a novel method of constructing a composite airfoil so as to further minimize the possibility of losing the leading edge protective device due to delamination caused by impact and bending.
Document ID
19770012226
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Brantley, J. W.
(GE Co. Cincinnati, United States)
Irwin, T. P.
(GE Co. Cincinnati, United States)
Date Acquired
August 8, 2013
Publication Date
February 8, 1977
Subject Category
Composite Materials
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-596905
Patent Number: NASA-CASE-LEW-12550-1
Patent Number: US-PATENT-4,006,999
Accession Number
77N19170
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LEW-12550-1|US-PATENT-4,006,999
Patent Application
US-PATENT-APPL-SN-596905
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