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Answer by Peter Kämpf for What is engine power vs propeller thrust relation?
Explaining maritime propeller design in comments doesn't work well, so I give it a shot here.Given: 70 hp at 5800 RPM engine output, geared down at the prop shaft to 2300 RPM. Propeller with 3 blades,...
View ArticleAnswer by xxavier for What is engine power vs propeller thrust relation?
Power P, stationary thrust T, propeller swept area A, and air density rho are linked by this expression, derived from first principles and momentum theory:T^3 = 2 · P^2 · A · rhoThat's the maximum...
View ArticleWhat is engine power vs propeller thrust relation?
Given:speed 30 knotsengine power 70 hp at 5800 RPMpropeller 3 blades, diameter 14 inch, pitch 17 inch, at 2300 RPMfluid density 1023 kg/m3I know that each blade is basically one wing. Calculating lift...
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