Propulsive Efficiency given Effective Speed Ratio Solution

STEP 0: Pre-Calculation Summary
Formula Used
Propulsive Efficiency = (2*Effective Speed Ratio)/(1+Effective Speed Ratio)
ηpropulsive = (2*α)/(1+α)
This formula uses 2 Variables
Variables Used
Propulsive Efficiency - Propulsive efficiency is the efficiency with which the energy contained in a fuel is converted into kinetic energy of the vehicle.
Effective Speed Ratio - Effective Speed Ratio is the ratio of aircraft forward speed to the aircraft jet velocity.
STEP 1: Convert Input(s) to Base Unit
Effective Speed Ratio: 0.4475 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ηpropulsive = (2*α)/(1+α) --> (2*0.4475)/(1+0.4475)
Evaluating ... ...
ηpropulsive = 0.618307426597582
STEP 3: Convert Result to Output's Unit
0.618307426597582 --> No Conversion Required
FINAL ANSWER
0.618307426597582 0.618307 <-- Propulsive Efficiency
(Calculation completed in 00.020 seconds)

Credits

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Created by Chilvera Bhanu Teja
Institute of Aeronautical Engineering (IARE), Hyderabad
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Verified by Vaibhav Malani
National Institute of Technology (NIT), Tiruchirapalli
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Propulsive Efficiency given Effective Speed Ratio Formula

​LaTeX ​Go
Propulsive Efficiency = (2*Effective Speed Ratio)/(1+Effective Speed Ratio)
ηpropulsive = (2*α)/(1+α)

What is propulsive efficiency?

Propulsive efficiency is the efficiency with which the energy contained in a fuel is converted into kinetic energy of the vehicle.

How to Calculate Propulsive Efficiency given Effective Speed Ratio?

Propulsive Efficiency given Effective Speed Ratio calculator uses Propulsive Efficiency = (2*Effective Speed Ratio)/(1+Effective Speed Ratio) to calculate the Propulsive Efficiency, Propulsive Efficiency given Effective Speed Ratio is a measure of the effectiveness of a propeller or a rotor in converting the engine's power into useful thrust, taking into account the speed at which the propeller or rotor operates and the speed of the surrounding fluid. Propulsive Efficiency is denoted by ηpropulsive symbol.

How to calculate Propulsive Efficiency given Effective Speed Ratio using this online calculator? To use this online calculator for Propulsive Efficiency given Effective Speed Ratio, enter Effective Speed Ratio (α) and hit the calculate button. Here is how the Propulsive Efficiency given Effective Speed Ratio calculation can be explained with given input values -> 0.618307 = (2*0.4475)/(1+0.4475).

FAQ

What is Propulsive Efficiency given Effective Speed Ratio?
Propulsive Efficiency given Effective Speed Ratio is a measure of the effectiveness of a propeller or a rotor in converting the engine's power into useful thrust, taking into account the speed at which the propeller or rotor operates and the speed of the surrounding fluid and is represented as ηpropulsive = (2*α)/(1+α) or Propulsive Efficiency = (2*Effective Speed Ratio)/(1+Effective Speed Ratio). Effective Speed Ratio is the ratio of aircraft forward speed to the aircraft jet velocity.
How to calculate Propulsive Efficiency given Effective Speed Ratio?
Propulsive Efficiency given Effective Speed Ratio is a measure of the effectiveness of a propeller or a rotor in converting the engine's power into useful thrust, taking into account the speed at which the propeller or rotor operates and the speed of the surrounding fluid is calculated using Propulsive Efficiency = (2*Effective Speed Ratio)/(1+Effective Speed Ratio). To calculate Propulsive Efficiency given Effective Speed Ratio, you need Effective Speed Ratio (α). With our tool, you need to enter the respective value for Effective Speed Ratio and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Propulsive Efficiency?
In this formula, Propulsive Efficiency uses Effective Speed Ratio. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Propulsive Efficiency = Thrust Power/Propulsive Power
  • Propulsive Efficiency = (2*Flight Speed)/(Exit Velocity+Flight Speed)
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