Thermal efficiency of turbojet engine Calculator

✖Propulsive Power refers to the power generated by a propulsion system, crucial in measuring the engine's ability to produce thrust and propel an object or vehicle forward.ⓘ Propulsive Power [P]			+10% -10%
✖Fuel Flow Rate represents the rate at which fuel is consumed or supplied over a specified period, crucial for monitoring fuel consumption and efficiency in various engines or systems.ⓘ Fuel Flow Rate [m_f]			+10% -10%
✖Fuel Calorific Value denotes the amount of heat energy released per unit mass of fuel upon complete combustion.ⓘ Fuel Calorific Value [Q]			+10% -10%

✖Turbojet Thermal Efficiency signifies the ratio of the work output of a turbojet engine to the heat input from fuel.ⓘ Thermal efficiency of turbojet engine [η_th]

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Thermal efficiency of turbojet engine Solution

STEP 0: Pre-Calculation Summary

Formula Used

Turbojet Thermal Efficiency = Propulsive Power/(Fuel Flow Rate*Fuel Calorific Value)
η_th = P/(m_f*Q)
This formula uses 4 Variables

Variables Used

Turbojet Thermal Efficiency - Turbojet Thermal Efficiency signifies the ratio of the work output of a turbojet engine to the heat input from fuel.
Propulsive Power - (Measured in Watt) - Propulsive Power refers to the power generated by a propulsion system, crucial in measuring the engine's ability to produce thrust and propel an object or vehicle forward.
Fuel Flow Rate - (Measured in Kilogram per Second) - Fuel Flow Rate represents the rate at which fuel is consumed or supplied over a specified period, crucial for monitoring fuel consumption and efficiency in various engines or systems.
Fuel Calorific Value - (Measured in Joule per Kilogram) - Fuel Calorific Value denotes the amount of heat energy released per unit mass of fuel upon complete combustion.

STEP 1: Convert Input(s) to Base Unit

Propulsive Power: 980 Kilowatt --> 980000 Watt (Check conversion here)
Fuel Flow Rate: 0.033 Kilogram per Second --> 0.033 Kilogram per Second No Conversion Required
Fuel Calorific Value: 43500 Kilojoule per Kilogram --> 43500000 Joule per Kilogram (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η_th = P/(m_f*Q) --> 980000/(0.033*43500000)

Evaluating ... ...

η_th = 0.682688958551028

STEP 3: Convert Result to Output's Unit

0.682688958551028 --> No Conversion Required

FINAL ANSWER

0.682688958551028 ≈ 0.682689 <-- Turbojet Thermal Efficiency

(Calculation completed in 00.004 seconds)

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Created by Chilvera Bhanu Teja

Institute of Aeronautical Engineering (IARE), Hyderabad

Chilvera Bhanu Teja has created this Calculator and 300+ more calculators!

Verified by Sagar S Kulkarni

Dayananda Sagar College of Engineering (DSCE), Bengaluru

Sagar S Kulkarni has verified this Calculator and 200+ more calculators!

< Turbojets Calculators

Nozzle Exit Area in Turbojet

LaTeX Go Nozzle Exit Area = (Net Thrust of Turbojet-Mass Flow Rate Turbojet*(1+Fuel Air Ratio)*(Exit Velocity-Flight Speed))/(Nozzle Exit Pressure-Ambient Pressure)

Turbojet Gross Thrust

LaTeX Go Gross Thrust of Turbojet = Mass Flow Rate Turbojet*(1+Fuel Air Ratio)*Exit Velocity+(Nozzle Exit Pressure-Ambient Pressure)*Nozzle Exit Area

Mass Flow Rate of Exhaust Gases given Fuel Air Ratio

LaTeX Go Total Mass Flow Rate Turbojet = Mass Flow Rate Turbojet*(1+Fuel Air Ratio)

Mass Flow Rate of Exhaust Gases

LaTeX Go Total Mass Flow Rate Turbojet = Mass Flow Rate Turbojet+Fuel Flow Rate

Thermal efficiency of turbojet engine Formula

LaTeX Go

Turbojet Thermal Efficiency = Propulsive Power/(Fuel Flow Rate*Fuel Calorific Value)
η_th = P/(m_f*Q)

What is thermal efficiency?

Thermal efficiency is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, a steam turbine or a steam engine, a boiler, furnace.

How to Calculate Thermal efficiency of turbojet engine?

Thermal efficiency of turbojet engine calculator uses Turbojet Thermal Efficiency = Propulsive Power/(Fuel Flow Rate*Fuel Calorific Value) to calculate the Turbojet Thermal Efficiency, Thermal efficiency of turbojet engine is a measure of the ratio of the power output of the engine to the energy released by the fuel, describing the ability of the engine to convert fuel energy into useful mechanical energy. Turbojet Thermal Efficiency is denoted by η_th symbol.

How to calculate Thermal efficiency of turbojet engine using this online calculator? To use this online calculator for Thermal efficiency of turbojet engine, enter Propulsive Power (P), Fuel Flow Rate (m_f) & Fuel Calorific Value (Q) and hit the calculate button. Here is how the Thermal efficiency of turbojet engine calculation can be explained with given input values -> 0.682689 = 980000/(0.033*43500000).

FAQ

What is Thermal efficiency of turbojet engine?

Thermal efficiency of turbojet engine is a measure of the ratio of the power output of the engine to the energy released by the fuel, describing the ability of the engine to convert fuel energy into useful mechanical energy and is represented as η_th = P/(m_f*Q) or Turbojet Thermal Efficiency = Propulsive Power/(Fuel Flow Rate*Fuel Calorific Value). Propulsive Power refers to the power generated by a propulsion system, crucial in measuring the engine's ability to produce thrust and propel an object or vehicle forward, Fuel Flow Rate represents the rate at which fuel is consumed or supplied over a specified period, crucial for monitoring fuel consumption and efficiency in various engines or systems & Fuel Calorific Value denotes the amount of heat energy released per unit mass of fuel upon complete combustion.

How to calculate Thermal efficiency of turbojet engine?

Thermal efficiency of turbojet engine is a measure of the ratio of the power output of the engine to the energy released by the fuel, describing the ability of the engine to convert fuel energy into useful mechanical energy is calculated using Turbojet Thermal Efficiency = Propulsive Power/(Fuel Flow Rate*Fuel Calorific Value). To calculate Thermal efficiency of turbojet engine, you need Propulsive Power (P), Fuel Flow Rate (m_f) & Fuel Calorific Value (Q). With our tool, you need to enter the respective value for Propulsive Power, Fuel Flow Rate & Fuel Calorific Value and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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