Liftoff velocity for given stall velocity Calculator

✖Stall Velocity is defined as the velocity of an airplane in steady flight at its maximum lift coefficient.ⓘ Stall Velocity [V_stall]

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✖Liftoff velocity is defined as the velocity of the aircraft at which it first becomes airborne.ⓘ Liftoff velocity for given stall velocity [V_LO]

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Formula

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Liftoff velocity for given stall velocity

Formula

`"V"_{"LO"} = 1.2*"V"_{"stall"}`

Example

`"177.6m/s"=1.2*"148m/s"`

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Liftoff velocity for given stall velocity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Liftoff velocity = 1.2*Stall Velocity
V_LO = 1.2*V_stall
This formula uses 2 Variables

Variables Used

Liftoff velocity - (Measured in Meter per Second) - Liftoff velocity is defined as the velocity of the aircraft at which it first becomes airborne.
Stall Velocity - (Measured in Meter per Second) - Stall Velocity is defined as the velocity of an airplane in steady flight at its maximum lift coefficient.

STEP 1: Convert Input(s) to Base Unit

Stall Velocity: 148 Meter per Second --> 148 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_LO = 1.2*V_stall --> 1.2*148

Evaluating ... ...

V_LO = 177.6

STEP 3: Convert Result to Output's Unit

177.6 Meter per Second --> No Conversion Required

FINAL ANSWER

177.6 Meter per Second <-- Liftoff velocity

(Calculation completed in 00.004 seconds)

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Home » Physics » Aircraft Mechanics » Aircraft Performance » Take-off and Landing » Aerospace » Take-Off » Liftoff velocity for given stall velocity

Credits

Created by Vinay Mishra

Indian Institute for Aeronautical Engineering and Information Technology (IIAEIT), Pune

Vinay Mishra has created this Calculator and 300+ more calculators!

Verified by Sanjay Krishna

Amrita School of Engineering (ASE), Vallikavu

Sanjay Krishna has verified this Calculator and 200+ more calculators!

< 15 Take-Off Calculators

Take Off Ground Run

Go Takeoff Ground Run = Weight Of Aircraft/(2*[g])*int((2*Velocity of Aircraft)/(Thrust Force-Drag Force-Reference Of Rolling Resistance Coefficient*(Weight Of Aircraft-Lift Force)),x,0,Aircraft Lift Off Speed)

Drag during ground effect

Go Drag = (Parasite Drag Coefficient+(Lift Coefficient^2*Ground Effect Factor)/(pi*Oswald Efficiency Factor*Aspect Ratio of a Wing))*(0.5*Freestream Density*Flight Velocity^2*Reference Area)

Thrust for given liftoff distance

Go Aircraft Thrust = 1.44*(Weight^2)/([g]*Freestream Density*Reference Area*Maximum Lift Coefficient*Liftoff Distance)

Liftoff distance

Go Liftoff Distance = 1.44*(Weight^2)/([g]*Freestream Density*Reference Area*Maximum Lift Coefficient*Aircraft Thrust)

Liftoff velocity for given weight

Go Liftoff velocity = 1.2*(sqrt((2*Weight)/(Freestream Density*Reference Area*Maximum Lift Coefficient)))

Stall velocity for given weight

Go Stall Velocity = sqrt((2*Weight)/(Freestream Density*Reference Area*Maximum Lift Coefficient))

Ground effect factor

Go Ground Effect Factor = ((16*Height from Ground/Wingspan)^2)/(1+(16*Height from Ground/Wingspan)^2)

Maximum Lift coefficient for given liftoff velocity

Go Maximum Lift Coefficient = 2.88*Weight/(Freestream Density*Reference Area*(Liftoff velocity^2))

Maximum Lift coefficient for given stall velocity

Go Maximum Lift Coefficient = 2*Weight/(Freestream Density*Reference Area*(Stall Velocity^2))

Coefficient of rolling friction during ground roll

Go Coefficient of Rolling Friction = Rolling Resistance/(Weight-Lift)

Lift acting on aircraft during ground roll

Go Lift = Weight-(Rolling Resistance/Coefficient of Rolling Friction)

Weight of aircraft during ground roll

Go Weight = (Rolling Resistance/Coefficient of Rolling Friction)+Lift

Resistance force during ground roll

Go Rolling Resistance = Coefficient of Rolling Friction*(Weight-Lift)

Liftoff velocity for given stall velocity

Go Liftoff velocity = 1.2*Stall Velocity

Stall velocity for given liftoff velocity

Go Stall Velocity = Liftoff velocity/1.2

Liftoff velocity for given stall velocity Formula

Liftoff velocity = 1.2*Stall Velocity
V_LO = 1.2*V_stall

What is the stall angle of attack?

A stall occurs when the angle of attack of an aerofoil exceeds the value which creates maximum lift as a consequence of airflow across it. This angle varies very little in response to the cross-section of the (clean) aerofoil and is typically around 15°.

How to Calculate Liftoff velocity for given stall velocity?

Liftoff velocity for given stall velocity calculator uses Liftoff velocity = 1.2*Stall Velocity to calculate the Liftoff velocity, Liftoff Velocity for Given Stall Velocity is a measure of the minimum speed required for an aircraft to take off, calculated by multiplying the stall velocity by a safety factor of 1.2, ensuring a safe margin above the stall speed to prevent engine failure or loss of control during critical phases of flight. Liftoff velocity is denoted by V_LO symbol.

How to calculate Liftoff velocity for given stall velocity using this online calculator? To use this online calculator for Liftoff velocity for given stall velocity, enter Stall Velocity (V_stall) and hit the calculate button. Here is how the Liftoff velocity for given stall velocity calculation can be explained with given input values -> 177.6 = 1.2*148.

FAQ

What is Liftoff velocity for given stall velocity?

Liftoff Velocity for Given Stall Velocity is a measure of the minimum speed required for an aircraft to take off, calculated by multiplying the stall velocity by a safety factor of 1.2, ensuring a safe margin above the stall speed to prevent engine failure or loss of control during critical phases of flight and is represented as V_LO = 1.2*V_stall or Liftoff velocity = 1.2*Stall Velocity. Stall Velocity is defined as the velocity of an airplane in steady flight at its maximum lift coefficient.

How to calculate Liftoff velocity for given stall velocity?

Liftoff Velocity for Given Stall Velocity is a measure of the minimum speed required for an aircraft to take off, calculated by multiplying the stall velocity by a safety factor of 1.2, ensuring a safe margin above the stall speed to prevent engine failure or loss of control during critical phases of flight is calculated using Liftoff velocity = 1.2*Stall Velocity. To calculate Liftoff velocity for given stall velocity, you need Stall Velocity (V_stall). With our tool, you need to enter the respective value for Stall Velocity 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 Liftoff velocity?

In this formula, Liftoff velocity uses Stall Velocity. We can use 1 other way(s) to calculate the same, which is/are as follows -

Liftoff velocity = 1.2*(sqrt((2*Weight)/(Freestream Density*Reference Area*Maximum Lift Coefficient)))

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