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Propeller Efficiency Formula

GoPropeller efficiency given thrust Formula

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Propeller efficiency is defined as power produced (propeller power) divided by power applied (engine power). Check FAQs

η p = \frac{P thrust}{S p}

η_p - Propeller Efficiency?P_thrust - Thrust Power?S_p - Shaft Power?

Propeller Efficiency Example

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Here is how the Propeller Efficiency equation looks like with Values.

Here is how the Propeller Efficiency equation looks like with Units.

Here is how the Propeller Efficiency equation looks like.

0.9385 = \frac{122}{130}

0.9385 = \frac{122kW}{130kW}

0.9385 = \frac{122}{130}

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Propeller Efficiency Solution

Follow our step by step solution on how to calculate Propeller Efficiency?

FIRST Step Consider the formula

η p = \frac{P thrust}{S p}

Next Step Substitute values of Variables

∴

η p = \frac{122kW}{130kW}

Next Step Convert Units

∴

η p = \frac{122000W}{130000W}

Next Step Prepare to Evaluate

∴

η p = \frac{122000}{130000}

Next Step Evaluate

∴

η p = 0.938461538461538

LAST Step Rounding Answer

∴

η p = 0.9385

Propeller Efficiency Formula Elements

Variables

Propeller Efficiency

Propeller efficiency is defined as power produced (propeller power) divided by power applied (engine power).

Symbol: η_p

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Propeller Efficiency

Thrust Power

Thrust Power refers to the power generated by a propulsion system to produce thrust and propel an object forward.

Symbol: P_thrust

Measurement: PowerUnit: kW

Note: Value should be greater than 0.

Formulas to find Thrust Power

Shaft Power

Shaft Power is the mechanical power transmitted from one rotating element of a vehicle, ship, and all types of machinery to another.

Symbol: S_p

Measurement: PowerUnit: kW

Note: Value can be positive or negative.

Formulas to find Shaft Power

Other Formulas to find Propeller Efficiency

Go Propeller efficiency given thrust

η p = \frac{T prop \cdot V}{S p}

Other formulas in Turboprops category

Go Total thrust given nozzle thrust and propeller thrust

T = T nozzle + T prop

Go Thermal Efficiency of Propeller Engines

η th = \frac{BP}{m f \cdot Q}

How to Evaluate Propeller Efficiency?

Propeller Efficiency evaluator uses Propeller Efficiency = Thrust Power/Shaft Power to evaluate the Propeller Efficiency, The Propeller Efficiency formula is defined as the ratio of thrust power (propeller power) to shaft power. Propeller Efficiency is denoted by η_p symbol.

How to evaluate Propeller Efficiency using this online evaluator? To use this online evaluator for Propeller Efficiency, enter Thrust Power (P_thrust) & Shaft Power (S_p) and hit the calculate button.

FAQs on Propeller Efficiency

What is the formula to find Propeller Efficiency?

The formula of Propeller Efficiency is expressed as Propeller Efficiency = Thrust Power/Shaft Power. Here is an example- 0.938462 = 122000/130000.

How to calculate Propeller Efficiency?

With Thrust Power (P_thrust) & Shaft Power (S_p) we can find Propeller Efficiency using the formula - Propeller Efficiency = Thrust Power/Shaft Power.

What are the other ways to Calculate Propeller Efficiency?

Here are the different ways to Calculate Propeller Efficiency-

Propeller Efficiency=(Propeller Thrust*Flight Speed)/Shaft Power

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