Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Formed with main spar
Patent
1976-12-17
1978-03-28
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Formed with main spar
416230, 416241A, F03D 106
Patent
active
040812200
ABSTRACT:
A wind turbine blade in the form of a semi-spar in which the outer portion of the finished blade shape is the filament wound spar itself and the remainder of the blade incorporates a trailing edge portion, increasing in dimension toward the blade base, this part of the blade being filament wound around the spar.
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patent: 3038543 (1962-06-01), Davidson
patent: 3237697 (1966-03-01), Ford et al.
patent: 3713753 (1973-01-01), Brunsett
patent: 3902944 (1975-09-01), Ashton et al.
patent: 3943020 (1976-03-01), Ashton et al.
patent: 3962506 (1976-06-01), Dunahoo
patent: 3967996 (1976-07-01), Kamov et al.
Powell Jr. Everette A.
United Technologies Corporation
Warren Charles A.
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