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Bypass Ratio Formula

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The Bypass Ratio is defined as the mass flow of air passing outside the core divided by the mass flow through the core. Check FAQs

bpr = \frac{ṁ b}{m c}

bpr - Bypass Ratio?ṁ_b - Mass Flow Rate Bypass?m_c - Mass Flow Rate Core?

Bypass Ratio Example

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Here is how the Bypass Ratio equation looks like with Values.

Here is how the Bypass Ratio equation looks like with Units.

Here is how the Bypass Ratio equation looks like.

6 = \frac{258}{43}

6 = \frac{258kg/s}{43kg/s}

6 = \frac{258}{43}

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Bypass Ratio Solution

Follow our step by step solution on how to calculate Bypass Ratio?

FIRST Step Consider the formula

bpr = \frac{ṁ b}{m c}

Next Step Substitute values of Variables

∴

bpr = \frac{258kg/s}{43kg/s}

Next Step Prepare to Evaluate

∴

bpr = \frac{258}{43}

LAST Step Evaluate

∴

bpr = 6

Bypass Ratio Formula Elements

Variables

Bypass Ratio

The Bypass Ratio is defined as the mass flow of air passing outside the core divided by the mass flow through the core.

Symbol: bpr

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Bypass Ratio

Mass Flow Rate Bypass

Mass Flow Rate Bypass refers to the rate at which air bypasses the core of a turbofan engine and flows through the bypass duct.

Symbol: ṁ_b

Measurement: Mass Flow RateUnit: kg/s

Note: Value should be greater than 0.

Formulas to find Mass Flow Rate Bypass

Mass Flow Rate Core

Mass Flow Rate Core refers to the rate at which air flows through the core of a turbofan engine, specifically through the combustion chamber and the turbine.

Symbol: m_c

Measurement: Mass Flow RateUnit: kg/s

Note: Value should be greater than 0.

Formulas to find Mass Flow Rate Core

Other formulas in Turbofans category

Go Cooling Effectiveness

ε = \frac{T g - T m}{T g - T c}

Go Total mass flow rate through turbofan engine

m a = m c + ṁ b

Go Turbofan thrust

T = m c \cdot (V j,c - V) + ṁ b \cdot (V j,b - V)

Go Core Exhaust Velocity given Turbofan Thrust

V j,c = \frac{T - ṁ b \cdot (V j,b - V)}{m c} + V

How to Evaluate Bypass Ratio?

Bypass Ratio evaluator uses Bypass Ratio = Mass Flow Rate Bypass/Mass Flow Rate Core to evaluate the Bypass Ratio, The Bypass Ratio formula is the ratio of the mass flow through the core to the mass flow of air leaving the core of the turbofan engine. Bypass Ratio is denoted by bpr symbol.

How to evaluate Bypass Ratio using this online evaluator? To use this online evaluator for Bypass Ratio, enter Mass Flow Rate Bypass (ṁ_b) & Mass Flow Rate Core (m_c) and hit the calculate button.

FAQs on Bypass Ratio

What is the formula to find Bypass Ratio?

The formula of Bypass Ratio is expressed as Bypass Ratio = Mass Flow Rate Bypass/Mass Flow Rate Core. Here is an example- 6 = 258/43.

How to calculate Bypass Ratio?

With Mass Flow Rate Bypass (ṁ_b) & Mass Flow Rate Core (m_c) we can find Bypass Ratio using the formula - Bypass Ratio = Mass Flow Rate Bypass/Mass Flow Rate Core.

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Bypass Ratio Formula

Bypass Ratio Example

Bypass Ratio Solution

Bypass Ratio Formula Elements

Other formulas in Turbofans category

How to Evaluate Bypass Ratio?

FAQs on Bypass Ratio

Variable Name