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IrishNavy05 said:That is exactly the reason that no induced drag is created. BECAUSE it is an airfoil, no wingtip vortices are created so there is no induced drag. there is no lift vector for the vortices to shift backwards
Everything else you are right on, but I am convinced C is the correct answer...
sevenhelmet said:So your argument is that a wing isn't an airfoil?
danthaman said:This is straight from an aerodynamics class I took in college.
HH-60H said:Well, sh!t if you took an aero class in college, A must be the right answer.
jpaviator said:hey for the aeronautic MS guys, where did you happen to get them from? anyone do the ERAU extended learning program?
danthaman said:The answer is infact "A". In an average wing you get approximately 75% of your lift from bernoulli's effect (the camber of the airfoil) and 25% from newton's third law of motion (for every action there is an equal and opposite reaction). Air is deflected downward under the wing, which creates an opposite reaction of pushing the wing upward. A symmetrical airfoil gives you no bernoulli effect therefore reducing the amount of lift by 75% or more compared to a cambered wing. This is straight from an aerodynamics class I took in college.