Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Reverse curve surface
Patent
1989-02-01
1990-07-17
Garrett, Robert E.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Reverse curve surface
416DIG2, 416223R, 416237, 244 35R, B64C 1118
Patent
active
049418033
ABSTRACT:
A family of airfoils for use in a high solidity factor blade having a leading edge portion and a trailing edge portion, a tip portion, and a root portion, has a plurality of airfoil sections. Each section has: one of any of a plurality of camber lines extending from the leading edge portion to the trailing edge portion, the camber lines being scalable relative to each other, each having the same relative shape, the camber lines having a minimal slope from the leading edge to about a 40% chord and an apogee at about a 74% chord; a scalable thickness ratio of between about 2% to about 7.5%; and, a maximum thickness position which is located from about a 37.5% chord for an airfoil at the tip portion of the blade to about a 35.0% chord for an airfoil at the root portion of the blade.
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Vaczy Carol M.
Wainauski Harry S.
Doigan Lloyd D.
Garrett Robert E.
Nguyen Hoang
United Technologies Corporation
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