Somewhat related question.....
If you take a centerline tank in a 109 is there a bracket/mounting point left behind after you drop the tank that induces drag (which would not be there if you took off clean)? If so, how much of an effect on speed does the mounting bracket have?
Thanks....
Yes, every aircraft that carries ordnance leaves a mounting or hardpoint behind. Some of the hardpoints for bombs and DT's, however, are present on the aircraft even when ordnance is not carried (F4U, P-47, and P-38, IIRC), and so once ordnance is dropped, you have the same performance as if you hadn't taken anything.
Note that this is not the same case for rockets, which always increase drag, even once fired.
Speed penalty depends on the aircraft (190's, for example, seem to have less penalty from a hardpoint than the 109)