rapidshot
18th Jul 2010, 03:47
English is not my native language, so i am sorry in case of any misunderstanding,
my question is,
general form of drag coefficient is
drag=parasite drag + induced drag
lets forget about the second term for a while, as for the parasitic drag of the airfoil it is defined as "drag coefficient at zero lift" which almost makes the use of drag bucket impossible at various angle of attacks during flight, in one of the early Naca papers some attention was drawn here but not concluded
so, do the new codes or specs take this effect into account,
thanks
my question is,
general form of drag coefficient is
drag=parasite drag + induced drag
lets forget about the second term for a while, as for the parasitic drag of the airfoil it is defined as "drag coefficient at zero lift" which almost makes the use of drag bucket impossible at various angle of attacks during flight, in one of the early Naca papers some attention was drawn here but not concluded
so, do the new codes or specs take this effect into account,
thanks