Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Irregular – flanged or channel forming blade surface
Patent
1988-01-04
1989-12-12
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Irregular, flanged or channel forming blade surface
416119, 416242, F03D 706
Patent
active
048864218
ABSTRACT:
A vertical axis wind turbine blade comprising a blade body with a leading edge and trailing edge there between being generally parallel to each other with a series of a given intersecting triangulation of troughs along the enire blade length with each trough so intersecting transversally the trailing edge and being a upwardly given taper in direction of the leading edge by approximately 80 percent of the blade width and therewithal each trough is formed into a wind channelling containment of equispaced troughs there upon being adjacent with each other along the blade length and with the trough width therein respectively changing the wind driven air columns for a maximum transferring of energy to the blades on the windward side by a higher pressure building up while going into the troughs, while there about on the opposite side there is a reversal type of effect being cause by a pressure drop across the troughs by a lowering of air pressure flows into the troughs to therein cause an effect of speeding up the velocity of air streams and there within being an arrangement of the trailing edge shape for an improvement of laminar airflows by a blending of emerging air streams as being a said determinacy of Bernoullis; "Law of flow dynamics" for energy transfer to the blades even in lower wind velocities.
REFERENCES:
patent: 939136 (1909-11-01), Jacobsen
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patent: 2013473 (1935-09-01), Meyer et al.
patent: 2238749 (1941-04-01), Peltier
patent: 2324759 (1943-07-01), Brassell
patent: 2899128 (1959-08-01), Vaghi
patent: 4130380 (1978-12-01), Kaiser
patent: 4255085 (1981-03-01), Evans
patent: 4490623 (1984-12-01), Goedecke
Powell Jr. Everette A.
Wind Feather, United Science Asc.
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