Kinesiology 2241A/B Lecture Notes - Lecture 23: Lift Coefficient, Flow Velocity

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2241A/B
• Professor: Daniel Bechard

Document Summary

Ber(cid:374)oulli"s pri(cid:374)(cid:272)iple ((cid:272)ha(cid:374)ge flo(cid:449) of (cid:448)elo(cid:272)it(cid:455), (cid:272)reates for(cid:272)es (cid:271)(cid:455) shapi(cid:374)g thi(cid:374)gs like a(cid:374) air foil. A(cid:374) air foil changes the distance an object changing the velocity. These different flow rates create a difference in pressure. High flow velocity creates low pressure zone. Lift for(cid:272)e is (cid:374)o(cid:374) e(cid:454)iste(cid:374)t or so s(cid:373)all that it (cid:272)a(cid:374)"t lift. Differe(cid:374)(cid:272)e i(cid:374) pressures is (cid:374)ot (cid:271)ig e(cid:374)ough and flow rate is not big enough. This creates a lot of drag and can cause an aircraft to fall. Avoiding drag is what keeps these massive structures in he air. Greater lift coefficient = greater lift. (lift coefficient = wing shape, etc. ) For every 1 unit of velocity, force of lift foes up expontntially. Spinning object creates differences in fluid velocity and pressures over and under an object. (how fast the ball is moving on top and bottom). This air is acting on the ball to bring it up or down.