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//for the cessna skylane(CP-1):
b=10.912;//wingspan(meter)
S=16.165;//wingarea(m^2)
AR=b^2/S;//aspect ratio
D=1.225;//density at sea level(Kg/m^3)
W=13127.5;//normal gross weight(N)
f=65;//fuel capacity
P=230;//power provided by piston engine (unit-horsepower(hp))
Sf=2.0025;//specific fuel consumption(N/(hp.h))
Cdo=0.025;//parasite drag coefficient
e=0.8;//oswald efficiency factor
Pf=0.8;//propeller efficiency
L_Dmax=13.6;//maximum L/D from example 6.12
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