Aviation & Aeronautics
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Takeoff Ground Roll
Approximate ground-roll distance assuming constant acceleration to lift-off speed.
Formula
Variables
sGround roll
V_{LO}Lift-off speed
aAverage acceleration
Example
Doubling lift-off speed roughly quadruples the ground roll needed to reach it.
Did You Know?
Takeoff roll lengthens dramatically with weight, heat, and altitude — all of which thin the available lift and thrust.