Weight 50 000 kg
-0: L/D = 12
Thrust = 4 x 21 000 N
Assumed g = 10 m/s2
Does anyone know how to calculate the climb gradient if in a steady, wings level climb?
I asume Mass= 50000kg
Thus W= 50000*10= 500000 N.
Being a= CLB Angle
-1: L= W+Cos(a)
-2: Sin(a)= (T-D)/W
From 0: L=D*12
thus with 1: D*12=W+Cos(a)
D=(W+Cos(a))/12
In 2:
Sin(a)=(T-(W+Cos(a))/12)/W
a= Sin-1 (T-(W+Cos(a))/12)/W
When you find the CLB Angle "a" CLB GRAD= TAN(a)*100
ie 45 CLB angle= 100% CLB GRAD (for every ft you advance horizontaly you climb one ft verticaly)
