Liftoff velocity for given stall velocity Solution

STEP 0: Pre-Calculation Summary
Formula Used
Liftoff velocity = 1.2*Stall Velocity
VLO = 1.2*Vstall
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
VLO = 1.2*Vstall --> 1.2*148
Evaluating ... ...
VLO = 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)

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
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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
VLO = 1.2*Vstall

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 is typically 20 percent higher than the stalling velocity to ensure a margin of safety during takeoff. Liftoff velocity is denoted by VLO 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 (Vstall) 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 is typically 20 percent higher than the stalling velocity to ensure a margin of safety during takeoff and is represented as VLO = 1.2*Vstall 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 is typically 20 percent higher than the stalling velocity to ensure a margin of safety during takeoff is calculated using Liftoff velocity = 1.2*Stall Velocity. To calculate Liftoff velocity for given stall velocity, you need Stall Velocity (Vstall). 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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