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 00.004 seconds)

Credits

Created by Chilvera Bhanu Teja
Institute of Aeronautical Engineering (IARE), Hyderabad
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National Institute of Technology (NIT), Tiruchirapalli
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12 Efficiency Metrics Calculators

Net work output in simple gas turbine cycle
Go Net Work Output = Specific Heat Capacity at Constant Pressure*((Temperature at Inlet of Turbine-Temperature at Exit of Turbine)-(Temperature at Exit of Compressor-Temperature at Inlet of Compressor))
Change in Kinetic Energy of Jet Engine
Go Change in Kinetic Energy = (((Mass Flow Rate+Fuel Flow Rate)*Exit Velocity^2)-(Mass Flow Rate*Flight Speed^2 ))/2
Propulsive power
Go Propulsive Power = 1/2*((Mass Flow Rate+Fuel Flow Rate)*Exit Velocity^2-(Mass Flow Rate*Flight Speed^2))
Thermal Efficiency of Jet Engines given Effective Speed Ratio
Go Thermal Efficiency = (Exit Velocity^2*(1-Effective Speed Ratio^2))/(2*Fuel Air Ratio*Fuel Calorific Value)
Overall Efficiency given Specific Fuel Consumption
Go Overall Efficiency = Flight Speed/(Thrust-Specific Fuel Consumption*Fuel Calorific Value)
Overall Efficiency of Propulsive System
Go Overall Efficiency = Thermal Efficiency*Efficiency of Transmission*Propulsive Efficiency
Propulsive efficiency given aircraft velocity
Go Propulsive Efficiency = (2*Flight Speed)/(Exit Velocity+Flight Speed)
Transmission Efficiency given Output and Input of Transmission
Go Efficiency of Transmission = Transmission Output Power/Transmission Input Power
Propulsive Efficiency given Effective Speed Ratio
Go Propulsive Efficiency = (2*Effective Speed Ratio)/(1+Effective Speed Ratio)
Isentropic Efficiency of Expansion Machine
Go Turbine Efficiency = Actual Work/Isentropic Work Output
Propulsive efficiency
Go Propulsive Efficiency = Thrust Power/Propulsive Power
Effective speed ratio
Go Effective Speed Ratio = Flight Speed/Exit Velocity

Propulsive Efficiency given Effective Speed Ratio Formula

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, The Propulsive Efficiency given Effective Speed Ratio formula is defined as the propulsive power delivered to the aircraft (which is equal to thrust times airspeed) divided by the shaft power input to the propulsor. It is used to calculate. This formula is used to calculate the Propulsive efficiency when the effective speed ratio is given. 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 -> 0.611111 = (2*0.4475)/(1+0.4475).

FAQ

What is Propulsive Efficiency given Effective Speed Ratio?
The Propulsive Efficiency given Effective Speed Ratio formula is defined as the propulsive power delivered to the aircraft (which is equal to thrust times airspeed) divided by the shaft power input to the propulsor. It is used to calculate. This formula is used to calculate the Propulsive efficiency when the effective speed ratio is given 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?
The Propulsive Efficiency given Effective Speed Ratio formula is defined as the propulsive power delivered to the aircraft (which is equal to thrust times airspeed) divided by the shaft power input to the propulsor. It is used to calculate. This formula is used to calculate the Propulsive efficiency when the effective speed ratio is given 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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