Efficiency of Propulsion Calculator

✖Absolute Velocity of Issuing Jet is actual velocity of jet used in propeller.ⓘ Absolute Velocity of Issuing Jet [V]			+10% -10%
✖Velocity of Ship is velocity of jet in ship that makes it move.ⓘ Velocity of Ship [u]			+10% -10%

✖Efficiency of Jet is an electric motor is defined as the ratio of usable shaft power to electric input power.ⓘ Efficiency of Propulsion [η]

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Formula

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Efficiency of Propulsion

Formula

`"η" = 2*"V"*"u"/(("V"+"u")^2)`

Example

`"0.482306"=2*"6m/s"*"4.1m/s"/(("6m/s"+"4.1m/s")^2)`

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Efficiency of Propulsion Solution

STEP 0: Pre-Calculation Summary

Formula Used

Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2)
η = 2*V*u/((V+u)^2)
This formula uses 3 Variables

Variables Used

Efficiency of Jet - Efficiency of Jet is an electric motor is defined as the ratio of usable shaft power to electric input power.
Absolute Velocity of Issuing Jet - (Measured in Meter per Second) - Absolute Velocity of Issuing Jet is actual velocity of jet used in propeller.
Velocity of Ship - (Measured in Meter per Second) - Velocity of Ship is velocity of jet in ship that makes it move.

STEP 1: Convert Input(s) to Base Unit

Absolute Velocity of Issuing Jet: 6 Meter per Second --> 6 Meter per Second No Conversion Required
Velocity of Ship: 4.1 Meter per Second --> 4.1 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η = 2*V*u/((V+u)^2) --> 2*6*4.1/((6+4.1)^2)

Evaluating ... ...

η = 0.482305656308205

STEP 3: Convert Result to Output's Unit

0.482305656308205 --> No Conversion Required

FINAL ANSWER

0.482305656308205 ≈ 0.482306 <-- Efficiency of Jet

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Hydraulics and Waterworks » Impulse Momentum Equation and its Applications » Jet Propulsion - Reaction of Jet » Jet Propulsion of Ships » Efficiency of Propulsion

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Created by Rithik Agrawal

National Institute of Technology Karnataka (NITK), Surathkal

Rithik Agrawal has created this Calculator and 1300+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 1700+ more calculators!

< 10+ Jet Propulsion of Ships Calculators

Efficiency of Propulsion given Head Loss due to Friction

Go Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2+2*[g]*Impulse Height)

Area of Issuing Jet given Work done by Jet on Ship

Go Cross Sectional Area of Jet = (Work done*[g])/(Absolute Velocity of Issuing Jet*Velocity of Ship*Specific Weight of Liquid)

Efficiency of Propulsion

Go Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2)

Velocity of Jet Relative to Motion of Ship given Kinetic Energy

Go Relative Velocity = sqrt(Kinetic Energy*2*[g]/Weight of Body)

Area of Issuing Jet given Weight of Water

Go Cross Sectional Area of Jet = Weight of Water/(Specific Weight of Liquid*Relative Velocity)

Absolute Velocity of Issuing jet given Propelling Force

Go Absolute Velocity of Issuing Jet = [g]*Force of Fluid/Weight of Water

Propelling Force

Go Force of Fluid = Weight of Water*Absolute Velocity of Issuing Jet/[g]

Kinetic Energy of Water

Go Kinetic Energy = Weight of Water*(Flow Velocity^2)/(2*[g])

Absolute Velocity of Issuing Jet given Relative Velocity

Go Absolute Velocity of Issuing Jet = Relative Velocity-Velocity of Ship

Velocity of Moving Ship given Relative Velocity

Go Velocity of Ship = Relative Velocity-Absolute Velocity of Issuing Jet

Efficiency of Propulsion Formula

Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2)
η = 2*V*u/((V+u)^2)

What is Propulsion ?

Propulsion is the action or process of pushing or pulling to drive an object forward. The term is derived from two Latin words: pro, meaning before or forward; and pellere, meaning to drive. A propulsion system consists of a source of mechanical power, and a proposer.

How to Calculate Efficiency of Propulsion?

Efficiency of Propulsion calculator uses Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2) to calculate the Efficiency of Jet, The Efficiency of Propulsion is defined as the effectiveness and productivity of a propulsion system in converting energy into forward motion, typically measured by the ratio of useful work output to the energy input. Efficiency of Jet is denoted by η symbol.

How to calculate Efficiency of Propulsion using this online calculator? To use this online calculator for Efficiency of Propulsion, enter Absolute Velocity of Issuing Jet (V) & Velocity of Ship (u) and hit the calculate button. Here is how the Efficiency of Propulsion calculation can be explained with given input values -> 0.350677 = 2*6*4.1/((6+4.1)^2).

FAQ

What is Efficiency of Propulsion?

The Efficiency of Propulsion is defined as the effectiveness and productivity of a propulsion system in converting energy into forward motion, typically measured by the ratio of useful work output to the energy input and is represented as η = 2*V*u/((V+u)^2) or Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2). Absolute Velocity of Issuing Jet is actual velocity of jet used in propeller & Velocity of Ship is velocity of jet in ship that makes it move.

How to calculate Efficiency of Propulsion?

The Efficiency of Propulsion is defined as the effectiveness and productivity of a propulsion system in converting energy into forward motion, typically measured by the ratio of useful work output to the energy input is calculated using Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2). To calculate Efficiency of Propulsion, you need Absolute Velocity of Issuing Jet (V) & Velocity of Ship (u). With our tool, you need to enter the respective value for Absolute Velocity of Issuing Jet & Velocity of Ship 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 Efficiency of Jet?

In this formula, Efficiency of Jet uses Absolute Velocity of Issuing Jet & Velocity of Ship. We can use 1 other way(s) to calculate the same, which is/are as follows -

Efficiency of Jet = 2*Absolute Velocity of Issuing Jet*Velocity of Ship/((Absolute Velocity of Issuing Jet+Velocity of Ship)^2+2*[g]*Impulse Height)

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