Raptor05121
Mooney Apostate
- Joined
- Apr 13, 2010
- Messages
- 1,119
- Reaction score
- 152
You know- Short/Soft field, accelerate with flaps up, reach Vx speed and drop two notches of flaps while rotating.
Now apart from the whole risk management side of this, getting into the numbers game, does anyone know if there is actually any merit to not having that little bit of drag for a couple hundred feet?
In the air, I don't doubt 25* of flaps adds drag. But going from 0 to 55 mph with flaps down, I don't see how it adds enough drag to increase the takeoff roll or decrease acceleration vs having them up. The airframe itself is already so draggy, I can't see it doing any bit of difference.
I seem to recall a thread a long time ago in where someone actually ran the numbers to it and determined there was a marginal difference, but nothing substantial. I can't seem to find it now.
Now apart from the whole risk management side of this, getting into the numbers game, does anyone know if there is actually any merit to not having that little bit of drag for a couple hundred feet?
In the air, I don't doubt 25* of flaps adds drag. But going from 0 to 55 mph with flaps down, I don't see how it adds enough drag to increase the takeoff roll or decrease acceleration vs having them up. The airframe itself is already so draggy, I can't see it doing any bit of difference.
I seem to recall a thread a long time ago in where someone actually ran the numbers to it and determined there was a marginal difference, but nothing substantial. I can't seem to find it now.
