The following equation may be used to estimate the take-off ground run for an aircraft: Equation has been attached as an image. Calculate the take-off ground run, from a runway at ISA-SL conditions, for a twin engine aircraft for which the following data may be assumed Aircraft lift-off speed 155 knots Max take-off gross weight 220 tonnes Wing planform area (S) 358 m Wing CL (t/o flaps deployed, a = 0) 1.1 Wing span 53.18 m Oswald efficiency factor, e 0.7 KGE = CD(IGE) / Co(OGE) 0.4 Co sum (fuselage, wing, tailplane and nacelle) 0.015 Co for undercarriage 0.021 Co for flaps at taking-off setting 0.0073 Coefficient of rolling friction, u 0.02 Engine thrust (assumed constant) 310 kN per engine It may be assumed that 1knot = 0.51444 m/s It may be assumed that 1knot = 0.51444 m/s
The following equation may be used to estimate the take-off ground run for an aircraft: Equation has been attached as an image.
Calculate the take-off ground run, from a runway at ISA-SL conditions, for a twin engine aircraft for which the following data may be assumed
Aircraft lift-off speed |
155 knots |
Max take-off gross weight |
220 tonnes |
Wing planform area (S) |
358 m |
Wing CL (t/o flaps deployed, a = 0) |
1.1 |
Wing span |
53.18 m |
Oswald efficiency factor, e |
0.7 |
KGE = CD(IGE) / Co(OGE) |
0.4 |
Co sum (fuselage, wing, tailplane and nacelle) |
0.015 |
Co for undercarriage |
0.021 |
Co for flaps at taking-off setting |
0.0073 |
Coefficient of rolling friction, u |
0.02 |
Engine thrust (assumed constant) |
310 kN per engine |
It may be assumed that 1knot = 0.51444 m/s |
It may be assumed that 1knot = 0.51444 m/s
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