Quote:
Originally Posted by winkosmosis
Downforce created by an angled foil does create drag, by definition... An airplane wing perfectly aligned with airflow doesn't create much drag, but it also doesn't create much lift. A plane has to tilt its wings to fly (contrary to what they taught is in school about the Bernoulli effect).
|
lift at any given angle of attack is entirley dependent on the wing shape. there certainly are a great many airfoils that are able to fly with 0 Alpha so long as sufficient power is applied to maintain the needed speed. the only airfoils that generate no lift at 0 alpha are symmetric ones (including flat plates).
but then, in the real world, no airfoil is ever at a true 0 alpha.
__________________
I take offense to the saying
'it isnt rocket science' to describe the relative difficulty of a given endeavour. Rocket Science is NOT hard... just EXPENSIVE
