Coefficient of rolling friction during ground roll Calculator

✖Rolling Resistance (or Rolling friction) is the force resisting the motion of a rolling body on a surface.ⓘ Rolling Resistance [R]			+10% -10%
✖Weight Newton is a vector quantity and defined as the product of mass and acceleration acting on that mass.ⓘ Weight [W]			+10% -10%
✖The Lift, 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 [F_L]			+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 during ground roll [μ_r]

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Coefficient of rolling friction during ground roll

Formula

`"μ"_{"r"} = "R"/("W"-"F"_{"L"})`

Example

`"0.1"="5N"/("60.5N"-"10.5N")`

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Coefficient of rolling friction during ground roll Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

Coefficient of Rolling Friction - Coefficient of Rolling Friction is the ratio of the force of rolling friction to the total weight of the object.
Rolling Resistance - (Measured in Newton) - Rolling Resistance (or Rolling friction) is the force resisting the motion of a rolling body on a surface.
Weight - (Measured in Newton) - Weight Newton is a vector quantity and defined as the product of mass and acceleration acting on that mass.
Lift - (Measured in Newton) - The Lift, 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.

STEP 1: Convert Input(s) to Base Unit

Rolling Resistance: 5 Newton --> 5 Newton No Conversion Required
Weight: 60.5 Newton --> 60.5 Newton No Conversion Required
Lift: 10.5 Newton --> 10.5 Newton No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

μ_r = R/(W-F_L) --> 5/(60.5-10.5)

Evaluating ... ...

μ_r = 0.1

STEP 3: Convert Result to Output's Unit

0.1 --> No Conversion Required

FINAL ANSWER

0.1 <-- Coefficient of Rolling Friction

(Calculation completed in 00.004 seconds)

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Home » Physics » Aircraft Mechanics » Aircraft Performance » Take-off and Landing » Aerospace » Take-Off » Coefficient of rolling friction during ground roll

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

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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 = (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

Coefficient of rolling friction during ground roll Formula

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

What is ground roll in aviation?

Takeoff roll (ground roll) is the portion of the takeoff procedure during which the airplane is accelerated from a standstill to an airspeed that provides sufficient lift for it to become airborne.

How to Calculate Coefficient of rolling friction during ground roll?

Coefficient of rolling friction during ground roll calculator uses Coefficient of Rolling Friction = Rolling Resistance/(Weight-Lift) to calculate the Coefficient of Rolling Friction, Coefficient of Rolling Friction During Ground Roll is a measure of the resistance to an object's motion during the ground roll phase of landing, calculated as the ratio of rolling resistance to the weight of the aircraft minus the lift force. Coefficient of Rolling Friction is denoted by μ_r symbol.

How to calculate Coefficient of rolling friction during ground roll using this online calculator? To use this online calculator for Coefficient of rolling friction during ground roll, enter Rolling Resistance (R), Weight (W) & Lift (F_L) and hit the calculate button. Here is how the Coefficient of rolling friction during ground roll calculation can be explained with given input values -> 0.100321 = 5/(60.5-10.5).

FAQ

What is Coefficient of rolling friction during ground roll?

Coefficient of Rolling Friction During Ground Roll is a measure of the resistance to an object's motion during the ground roll phase of landing, calculated as the ratio of rolling resistance to the weight of the aircraft minus the lift force and is represented as μ_r = R/(W-F_L) or Coefficient of Rolling Friction = Rolling Resistance/(Weight-Lift). Rolling Resistance (or Rolling friction) is the force resisting the motion of a rolling body on a surface, Weight Newton is a vector quantity and defined as the product of mass and acceleration acting on that mass & The Lift, 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.

How to calculate Coefficient of rolling friction during ground roll?

Coefficient of Rolling Friction During Ground Roll is a measure of the resistance to an object's motion during the ground roll phase of landing, calculated as the ratio of rolling resistance to the weight of the aircraft minus the lift force is calculated using Coefficient of Rolling Friction = Rolling Resistance/(Weight-Lift). To calculate Coefficient of rolling friction during ground roll, you need Rolling Resistance (R), Weight (W) & Lift (F_L). With our tool, you need to enter the respective value for Rolling Resistance, Weight & Lift 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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