Page 161 - Aeronautical Engineer Data Book
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134 Aeronautical Engineer’s Data Book
γ
V = V A A
γ A Radius
Obstacle height V = V F V = 0
h f
Approach distance Flare Free S B
S S S
A F FR
Ground roll
Total landing distance
Fig. 9.2 Approach and landing definitions
F = thrust
g = acceleration due to gravity
h = altitude
RC = rate of climb
S = reference wing area
V = velocity
W = weight
W f = fuel flow
Flight-path gradient
� F – D �
–1
γ = sin
W
Time to climb
2(h 2 – h 1 )
∆t =
(RC) 1 + (RC) 2
Distance to climb
∆S = V(∆t)
Fuel to climb
∆Fuel = W (∆t)
f
Cruise
The basic cruise distance can be determined by
using the Breguet range equation for jet
aircraft, as follows:
