Lift acting on aircraft during ground roll Calculator

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✖Weight Newton is a vector quantity and defined as the product of mass and acceleration acting on that mass.ⓘ Weight Newton [W]			+10% -10%
✖Rolling Resistance (or Rolling friction) is the force resisting the motion of a rolling body on a surface.ⓘ Rolling Resistance [R]			+10% -10%
✖Coefficient of Rolling Friction is the ratio of the force of rolling friction to the total weight of the object.ⓘ Coefficient of Rolling Friction [μ_r]			+10% -10%

✖The Lift Force, lifting force or simply lift is the sum of all the forces on a body that force it to move perpendicular to the direction of flow.ⓘ Lift acting on aircraft during ground roll [F_L]

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Formula

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Lift acting on aircraft during ground roll

Formula

`"F"_{"L"} = "W"-("R"/"μ"_{"r"})`

Example

`"10.34N"="60.34N"-("5N"/"0.1")`

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Lift acting on aircraft during ground roll Solution

STEP 0: Pre-Calculation Summary

Formula Used

Lift Force = Weight Newton-(Rolling Resistance/Coefficient of Rolling Friction)
F_L = W-(R/μ_r)
This formula uses 4 Variables

Variables Used

Lift Force - (Measured in Newton) - The Lift Force, lifting force or simply lift is the sum of all the forces on a body that force it to move perpendicular to the direction of flow.
Weight Newton - (Measured in Newton) - Weight Newton is a vector quantity and defined as the product of mass and acceleration acting on that mass.
Rolling Resistance - (Measured in Newton) - Rolling Resistance (or Rolling friction) is the force resisting the motion of a rolling body on a surface.
Coefficient of Rolling Friction - Coefficient of Rolling Friction is the ratio of the force of rolling friction to the total weight of the object.

STEP 1: Convert Input(s) to Base Unit

Weight Newton: 60.34 Newton --> 60.34 Newton No Conversion Required
Rolling Resistance: 5 Newton --> 5 Newton No Conversion Required
Coefficient of Rolling Friction: 0.1 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

F_L = W-(R/μ_r) --> 60.34-(5/0.1)

Evaluating ... ...

F_L = 10.34

STEP 3: Convert Result to Output's Unit

10.34 Newton --> No Conversion Required

FINAL ANSWER

10.34 Newton <-- Lift Force

(Calculation completed in 00.020 seconds)

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Home » Physics » Aircraft Mechanics » Aircraft Performance » Take-off and Landing » Take-Off » Lift acting on aircraft during ground roll

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Created by Vinay Mishra

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

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Verified by Shikha Maurya

Indian Institute of Technology (IIT), Bombay

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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

Lift acting on aircraft during ground roll Formula

Lift Force = Weight Newton-(Rolling Resistance/Coefficient of Rolling Friction)
F_L = W-(R/μ_r)

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Aircraft use takeoff flap settings that are usually between 5-15 degrees (most jets use leading-edge slats as well).

How to Calculate Lift acting on aircraft during ground roll?

Lift acting on aircraft during ground roll calculator uses Lift Force = Weight Newton-(Rolling Resistance/Coefficient of Rolling Friction) to calculate the Lift Force, The Lift acting on aircraft during ground roll is equal to the weight of the aircraft at that instant minus the ratio of rolling resistance (due to rolling friction between the tires and the ground) and coefficient of rolling friction. Lift Force is denoted by F_L symbol.

How to calculate Lift acting on aircraft during ground roll using this online calculator? To use this online calculator for Lift acting on aircraft during ground roll, enter Weight Newton (W), Rolling Resistance (R) & Coefficient of Rolling Friction (μ_r) and hit the calculate button. Here is how the Lift acting on aircraft during ground roll calculation can be explained with given input values -> 10.34 = 60.34-(5/0.1).

FAQ

What is Lift acting on aircraft during ground roll?

The Lift acting on aircraft during ground roll is equal to the weight of the aircraft at that instant minus the ratio of rolling resistance (due to rolling friction between the tires and the ground) and coefficient of rolling friction and is represented as F_L = W-(R/μ_r) or Lift Force = Weight Newton-(Rolling Resistance/Coefficient of Rolling Friction). Weight Newton is a vector quantity and defined as the product of mass and acceleration acting on that mass, Rolling Resistance (or Rolling friction) is the force resisting the motion of a rolling body on a surface & Coefficient of Rolling Friction is the ratio of the force of rolling friction to the total weight of the object.

How to calculate Lift acting on aircraft during ground roll?

The Lift acting on aircraft during ground roll is equal to the weight of the aircraft at that instant minus the ratio of rolling resistance (due to rolling friction between the tires and the ground) and coefficient of rolling friction is calculated using Lift Force = Weight Newton-(Rolling Resistance/Coefficient of Rolling Friction). To calculate Lift acting on aircraft during ground roll, you need Weight Newton (W), Rolling Resistance (R) & Coefficient of Rolling Friction (μ_r). With our tool, you need to enter the respective value for Weight Newton, Rolling Resistance & Coefficient of Rolling Friction and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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