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Momentum Thrust Formula

GoIdeal Thrust given Effective Speed Ratio Formula

GoIdeal Thrust of Jet Engine Formula

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Ideal Thrust is the thrust produced by an engine when nozzle exit pressure is same as ambient pressure or nozzle is perfectly expanded. Check FAQs

T ideal = m a \cdot ((1 + f) \cdot V e - V)

T_ideal - Ideal Thrust?m_a - Mass Flow Rate?f - Fuel Air Ratio?V_e - Exit Velocity?V - Flight Speed?

Momentum Thrust Example

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Here is how the Momentum Thrust equation looks like with Values.

Here is how the Momentum Thrust equation looks like with Units.

Here is how the Momentum Thrust equation looks like.

487.312 = 3.5 \cdot ((1 + 0.009) \cdot 248 - 111)

487.312N = 3.5kg/s \cdot ((1 + 0.009) \cdot 248m/s - 111m/s)

487.312 = 3.5 \cdot ((1 + 0.009) \cdot 248 - 111)

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Momentum Thrust Solution

Follow our step by step solution on how to calculate Momentum Thrust?

FIRST Step Consider the formula

T ideal = m a \cdot ((1 + f) \cdot V e - V)

Next Step Substitute values of Variables

∴

T ideal = 3.5kg/s \cdot ((1 + 0.009) \cdot 248m/s - 111m/s)

Next Step Prepare to Evaluate

∴

T ideal = 3.5 \cdot ((1 + 0.009) \cdot 248 - 111)

LAST Step Evaluate

∴

T ideal = 487.312N

Momentum Thrust Formula Elements

Variables

Ideal Thrust

Ideal Thrust is the thrust produced by an engine when nozzle exit pressure is same as ambient pressure or nozzle is perfectly expanded.

Symbol: T_ideal

Measurement: ForceUnit: N

Note: Value should be greater than 0.

Formulas to find Ideal Thrust

Mass Flow Rate

Mass Flow Rate represents the amount of mass passing through a system per unit of time.

Symbol: m_a

Measurement: Mass Flow RateUnit: kg/s

Note: Value should be greater than 0.

Formulas to find Mass Flow Rate

Fuel Air Ratio

Fuel Air Ratio is the ratio of mass flow rate of fuel to the mass flow rate of air.

Symbol: f

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Fuel Air Ratio

Exit Velocity

Exit Velocity refers to the speed at which gases expand at the exit of nozzle of a engine.

Symbol: V_e

Measurement: SpeedUnit: m/s

Note: Value can be positive or negative.

Formulas to find Exit Velocity

Flight Speed

Flight Speed refers to the velocity at which an aircraft moves through the air.

Symbol: V

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Flight Speed

Other Formulas to find Ideal Thrust

Go Ideal Thrust given Effective Speed Ratio

T ideal = m a \cdot V \cdot ((\frac{1}{α}) - 1)

Go Ideal Thrust of Jet Engine

T ideal = m a \cdot (V e - V)

Go Thrust given aircraft forward speed, velocity of exhaust

T ideal = m a \cdot (V e - V)

Other formulas in Thrust Generation category

Go Total Thrust given Efficiency and Enthalpy

T total = m a \cdot ((\sqrt{2 \cdot Δh nozzle \cdot η nozzle}) - V + (\sqrt{η T \cdot η transmission \cdot Δh turbine}))

Go Thrust power

T P = m a \cdot V \cdot (V e - V)

Go Specific thrust

I sp = V e - V

Go Specific Thrust given Effective Speed Ratio

I sp = V e \cdot (1 - α)

How to Evaluate Momentum Thrust?

Momentum Thrust evaluator uses Ideal Thrust = Mass Flow Rate*((1+Fuel Air Ratio)*Exit Velocity-Flight Speed) to evaluate the Ideal Thrust, Momentum Thrust is a measure of the forward force produced by an aircraft or spacecraft, calculated by considering the mass flow rate, fuel-air ratio, exit velocity, and flight speed, providing a crucial parameter in aerospace engineering to evaluate the performance and efficiency of propulsion systems. Ideal Thrust is denoted by T_ideal symbol.

How to evaluate Momentum Thrust using this online evaluator? To use this online evaluator for Momentum Thrust, enter Mass Flow Rate (m_a), Fuel Air Ratio (f), Exit Velocity (V_e) & Flight Speed (V) and hit the calculate button.

FAQs on Momentum Thrust

What is the formula to find Momentum Thrust?

The formula of Momentum Thrust is expressed as Ideal Thrust = Mass Flow Rate*((1+Fuel Air Ratio)*Exit Velocity-Flight Speed). Here is an example- 487.312 = 3.5*((1+0.009)*248-111).

How to calculate Momentum Thrust?

With Mass Flow Rate (m_a), Fuel Air Ratio (f), Exit Velocity (V_e) & Flight Speed (V) we can find Momentum Thrust using the formula - Ideal Thrust = Mass Flow Rate*((1+Fuel Air Ratio)*Exit Velocity-Flight Speed).

What are the other ways to Calculate Ideal Thrust?

Here are the different ways to Calculate Ideal Thrust-

Ideal Thrust=Mass Flow Rate*Flight Speed*((1/Effective Speed Ratio)-1)
Ideal Thrust=Mass Flow Rate*(Exit Velocity-Flight Speed)
Ideal Thrust=Mass Flow Rate*(Exit Velocity-Flight Speed)

Can the Momentum Thrust be negative?

No, the Momentum Thrust, measured in Force cannot be negative.

Which unit is used to measure Momentum Thrust?

Momentum Thrust is usually measured using the Newton[N] for Force. Exanewton[N], Meganewton[N], Kilonewton[N] are the few other units in which Momentum Thrust can be measured.

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: Unit

Momentum Thrust Formula

​GoIdeal Thrust given Effective Speed Ratio Formula

​GoIdeal Thrust of Jet Engine Formula

Momentum Thrust Example

Momentum Thrust Solution

Momentum Thrust Formula Elements

Other Formulas to find Ideal Thrust

Other formulas in Thrust Generation category

How to Evaluate Momentum Thrust?

FAQs on Momentum Thrust

Variable Name

GoIdeal Thrust given Effective Speed Ratio Formula

GoIdeal Thrust of Jet Engine Formula