Liftoff velocity for given stall velocity Calculator

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 » 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 Force = (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 Thrust of an aircraft = 1.44*(Weight Newton^2)/([g]*Freestream density*Reference Area*Maximum Lift Coefficient*Liftoff Distance)

Liftoff distance

Go Liftoff Distance = 1.44*(Weight Newton^2)/([g]*Freestream density*Reference Area*Maximum Lift Coefficient*Thrust of an aircraft)

Liftoff velocity for given weight

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

Stall velocity for given weight

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

Maximum Lift coefficient for given liftoff velocity

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

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 stall velocity

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

Coefficient of rolling friction during ground roll

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

Lift acting on aircraft during ground roll

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

Weight of aircraft during ground roll

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

Resistance force during ground roll

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

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, The Liftoff velocity for given stall velocity refers to the speed at which the aircraft becomes airborne during the takeoff roll, it's the velocity at which the aerodynamic forces generated by the wings are sufficient to overcome the aircraft's weight and lift it off the ground, if the stall velocity of the aircraft is given, it represents the minimum airspeed at which the wings can still generate enough lift to maintain controlled flight. This is typically the slowest speed at which the aircraft can safely fly without stalling. 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 -> 93 = 1.2*stall_velocity.

FAQ

What is Liftoff velocity for given stall velocity?

The Liftoff velocity for given stall velocity refers to the speed at which the aircraft becomes airborne during the takeoff roll, it's the velocity at which the aerodynamic forces generated by the wings are sufficient to overcome the aircraft's weight and lift it off the ground, if the stall velocity of the aircraft is given, it represents the minimum airspeed at which the wings can still generate enough lift to maintain controlled flight. This is typically the slowest speed at which the aircraft can safely fly without stalling 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?

The Liftoff velocity for given stall velocity refers to the speed at which the aircraft becomes airborne during the takeoff roll, it's the velocity at which the aerodynamic forces generated by the wings are sufficient to overcome the aircraft's weight and lift it off the ground, if the stall velocity of the aircraft is given, it represents the minimum airspeed at which the wings can still generate enough lift to maintain controlled flight. This is typically the slowest speed at which the aircraft can safely fly without stalling 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 Newton)/(Freestream density*Reference Area*Maximum Lift Coefficient)))

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