w=9kg, S=0.63metres , rho air =1.225kg/m3
when i took Cl=1, i got
v cruise =(2w/s*rho*cl)
and taking cl max =1.8 (from the airfoil i chose)
i got-
v stall = (2w/s*rho*cl max)
these come out to be-
v cruise=15m/s
v stall =8m/s
and i earlier studied somewhere that the ratio of v cuise/ v stall is approximately 3 for the small radio controlled aircrafts.
please tell where i am going wrong.
please someone help.
when i took Cl=1, i got
v cruise =(2w/s*rho*cl)
and taking cl max =1.8 (from the airfoil i chose)
i got-
v stall = (2w/s*rho*cl max)
these come out to be-
v cruise=15m/s
v stall =8m/s
and i earlier studied somewhere that the ratio of v cuise/ v stall is approximately 3 for the small radio controlled aircrafts.
please tell where i am going wrong.
please someone help.
