Kinesiology 2241A/B Lecture Notes - Lecture 22: Cavitation, Flow Velocity
12 Jan 2016
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Document Summary
We cannot see lift and drag but we can see their force. Lift does not have to be up, can be in any direction. Air flow comes towards the wing and splits, travels at higher velocity above wing because it has a greater distance to cover because of the small belly on the top side of the wing. High flow velocity creates low pressure zone. Effect that"s caused on this object with the two competing pressure zones. Fl (lift force) always perpendicular to direction of the oncoming. Fl due to difference in pressure zones on opposite sides of. When slightly tilted up, create a difference in the pressure zones. Has to have greater pressure overtop that underneath. Not too much of an angle, but then create too much turbulence and end up creating more drag than lift. Angle between horizontal (e. g. ground) and c of g of. Difference between the two lines is the projection angle projectile.
