Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Formed with main spar
Patent
1975-03-21
1978-04-11
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Formed with main spar
416230, 416241A, B64C 2732
Patent
active
040836568
ABSTRACT:
A composite rotor blade has a nose spar of fiber reinforced plastic with the fibers extending spanwise the length of the spar and at the root encircling a transverse hub attachment structure with the spar provided with a tubular inner liner of cross ply filament wound fiberglass forming a closure for the nose spar with a blad afterbody structure including skins for integrating the afterbody with the nose spar and liner. Preferably the spar has an inner liner and an outer liner both of cross ply filament wound fiberglass in multi layers. The blade afterbody structure includes honeycomb filler having cells extending in the direction of blade thickness.
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Braswell James L.
Covington Cecil E.
Phillips Nolan B.
Tomerlin Reggie J.
Wohlfeld Robert M.
Powell Jr. Everette A.
Textron Inc.
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