Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Irregular – flanged or channel forming blade surface
Patent
1997-12-13
2000-02-29
Verdier, Christopher
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Irregular, flanged or channel forming blade surface
416223R, F04D 2938
Patent
active
060301791
ABSTRACT:
An aerodynamic-shaped airfoil having a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge into the wind, and a trailing edge which has a flange doubled back toward the leading edge.
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Kentfield & Clavelle, "The Flow Physics of Gurney Flaps, Devices for Improving Turbine Blade Performance," (1993), pp. 24-34, 17 Wind Engineering #1, Brentwood, Essex, GB.
Gurney flap illustrations on automobile chassis, date unknown.
Benasutti Frank J.
Verdier Christopher
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