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Propulsive power Formula

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Propulsive Power refers to the power generated by a propulsion system. Check FAQs

P = \frac{1}{2} \cdot ((m a + m f) \cdot {V e}^{2} - (m a \cdot V^{2}))

P - Propulsive Power?m_a - Mass Flow Rate?m_f - Fuel Flow Rate?V_e - Exit Velocity?V - Flight Speed?

Propulsive power Example

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Here is how the Propulsive power equation looks like with Values.

Here is how the Propulsive power equation looks like with Units.

Here is how the Propulsive power equation looks like.

87.0389 = \frac{1}{2} \cdot ((3.5 + 0.0315) \cdot 248^{2} - (3.5 \cdot 111^{2}))

87.0389kW = \frac{1}{2} \cdot ((3.5kg/s + 0.0315kg/s) \cdot {248m/s}^{2} - (3.5kg/s \cdot {111m/s}^{2}))

87.0389 = \frac{1}{2} \cdot ((3.5 + 0.0315) \cdot 248^{2} - (3.5 \cdot 111^{2}))

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Propulsive power Solution

Follow our step by step solution on how to calculate Propulsive power?

FIRST Step Consider the formula

P = \frac{1}{2} \cdot ((m a + m f) \cdot {V e}^{2} - (m a \cdot V^{2}))

Next Step Substitute values of Variables

∴

P = \frac{1}{2} \cdot ((3.5kg/s + 0.0315kg/s) \cdot {248m/s}^{2} - (3.5kg/s \cdot {111m/s}^{2}))

Next Step Prepare to Evaluate

∴

P = \frac{1}{2} \cdot ((3.5 + 0.0315) \cdot 248^{2} - (3.5 \cdot 111^{2}))

Next Step Evaluate

∴

P = 87038.938W

Next Step Convert to Output's Unit

∴

P = 87.038938kW

LAST Step Rounding Answer

∴

P = 87.0389kW

Propulsive power Formula Elements

Variables

Propulsive Power

Propulsive Power refers to the power generated by a propulsion system.

Symbol: P

Measurement: PowerUnit: kW

Note: Value should be greater than 0.

Formulas to find Propulsive Power

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 Flow Rate

Fuel Flow Rate refers to the rate at which fuel is supplied or consumed within a system over a specified period.

Symbol: m_f

Measurement: Mass Flow RateUnit: kg/s

Note: Value should be greater than 0.

Formulas to find Fuel Flow Rate

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 in Efficiency Metrics category

Go Isentropic Efficiency of Expansion Machine

η T = \frac{W actual}{W s,out}

Go Net work output in simple gas turbine cycle

W Net = C p \cdot ((T 3 - T 4) - (T 2 - T 1))

Go Thermal Efficiency of Jet Engines given Effective Speed Ratio

η th = \frac{{V e}^{2} \cdot (1 - α^{2})}{2 \cdot f \cdot Q}

Go Transmission Efficiency given Output and Input of Transmission

η transmission = \frac{P out}{P in}

How to Evaluate Propulsive power?

Propulsive power evaluator uses Propulsive Power = 1/2*((Mass Flow Rate+Fuel Flow Rate)*Exit Velocity^2-(Mass Flow Rate*Flight Speed^2)) to evaluate the Propulsive Power, Propulsive power is a measure of the energy required to produce movement or thrust, typically in a vehicle or aircraft, which is affected by the masses of the object and fuel, as well as the velocity of the exhaust gases. Propulsive Power is denoted by P symbol.

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

FAQs on Propulsive power

What is the formula to find Propulsive power?

The formula of Propulsive power is expressed as Propulsive Power = 1/2*((Mass Flow Rate+Fuel Flow Rate)*Exit Velocity^2-(Mass Flow Rate*Flight Speed^2)). Here is an example- 0.087039 = 1/2*((3.5+0.0315)*248^2-(3.5*111^2)).

How to calculate Propulsive power?

With Mass Flow Rate (m_a), Fuel Flow Rate (m_f), Exit Velocity (V_e) & Flight Speed (V) we can find Propulsive power using the formula - Propulsive Power = 1/2*((Mass Flow Rate+Fuel Flow Rate)*Exit Velocity^2-(Mass Flow Rate*Flight Speed^2)).

Can the Propulsive power be negative?

No, the Propulsive power, measured in Power cannot be negative.

Which unit is used to measure Propulsive power?

Propulsive power is usually measured using the Kilowatt[kW] for Power. Watt[kW], Milliwatt[kW], Microwatt[kW] are the few other units in which Propulsive power can be measured.

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Propulsive power Formula

Propulsive power Example

Propulsive power Solution

Propulsive power Formula Elements

Other formulas in Efficiency Metrics category

How to Evaluate Propulsive power?

FAQs on Propulsive power

Variable Name