TH33320A - Impeller that produces axial flow - Google Patents

Abstract

A propeller that generates axial flow has a blade width less than 20% of the propeller diameter. The slope angle at a radius of 0.6 is approximately 12-22 degrees. The width at the propeller tip is approximately 12-75% of the width at a radius of 0.6, and at the same time, the slope angle at the propeller tip is approximately 5-10 degrees, which is smaller than the slope angle at a radius of 0.6. The width at the base of the propeller is 40% or more of the width at a radius of 0.6, and at the same time, the slope angle at the base of the propeller is approximately 25-50 degrees. A propeller that generates axial flow has a blade width less than 20% of the propeller diameter. The radius of the blade width at the tip is approximately 0.4 - 0.8, and at the same time... The angle of inclination at the widest part is approximately 12-22 degrees. The width at the apex of the oar blade is approximately 12-75% of the widest part, and at the same time, the angle of inclination at the apex of the oar blade is approximately 5-10 degrees, which is less than the angle of inclination at the widest part. The width at the base of the oar is 40-100% of the widest part, and at the same time, the angle of inclination at the base of the oar blade is approximately 25-50 degrees.

Claims (2)

1. An axial flow propeller with characteristic blade shapes is characterized by (a) the widest part of the propeller is less than 20% of the propeller diameter; (b) the slope angle at radial position 0.6 is approximately 12-22 degrees; (c) the width at the apex of the propeller is approximately 12-75% of the width at radial position 0.6, and at the same time the slope angle at the apex of the propeller is approximately 5-10 degrees smaller than the slope angle at radial position 0.6; and (d) the width at the base of the propeller is 40% or more of the width at radial position 0.6, and at the same time the slope angle at the base of the propeller is approximately 25-50 degrees. 2. A propeller that produces axial flow with a characteristic propeller shape consisting of (a) the widest part of the propeller is less than 20% of the propeller diameter; (b) the radial position of the widest part of the propeller tip is approximately 0.4 - 0.8 and at the same time the angle of the widest part is approximately 12-22 degrees; (c) the width at the tip of the propeller is approximately 12-75% of the widest part and at the same time the angle of the slope at the tip of the propeller is approximately 5-10 degrees, which is less than the angle of the slope of the widest part; and d) the width at the base of the propeller is 40 - 100% of the widest part and at the same time the angle of the slope at the base of the propeller is approximately 25-50 degrees. (2 claims, 2 pages, 0 figures)