Efficient reverse thrusting modular propeller

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United States of America Patent

PATENT NO 9944372
SERIAL NO

14756550

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Abstract

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An efficient reverse-thrusting modular propeller combines a center hub and a set of identical and replaceable blades. Each such blade has a radially and laterally symmetrical hydrofoil cross-section but disposed along a full wave (360°) sinusoidal mean camber line. The blades all feature a very strong thicker symmetric hydrofoil cross-section at the propeller root which widens with a longer sinusoidal mean camber line wavelength, and thins in amplitude moving outward, and then the blades narrow again in shorter wavelength and thin more in diminishing amplitudes progressing toward the distal tip. Localized cupping on the leading or trailing edges is ruled-out as undesirable and counterproductive.

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Patent Owner(s)

Patent OwnerAddress
STAHL BRADFORD CNot Provided

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stahl, Bradford C Jackson, US 3 56

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