Propeller equations Flashcards by harvey porter | Brainscape

Q

Displacement propeller diameter

A

D = (1081.5kW/DARkts*(kts^0.5))^0.5

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Q

Planing propeller diameter

A

D = (1384.2kW/DARkts*(kts^0.5))^0.5

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Q

Reduced RPM

A

Reduced RPM = RPM/GB ratio

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Q

Pitch

A

Pitch = v*1056/reduced RPM

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Q

Slip

A

Slip = 1.4/kn^0.57

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Q

PSImax

A

P = 1.9v^0.5Ft^0.08

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Q

PSIreal

A

P = 326SHPe/v*Ad

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Q

Shaft HP

A

SHP = Engine HP*e

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