David Auerbach 2000 Eur. J. Phys. 21 289 doi:10.1088/0143-0807/21/4/302
David Auerbach
Show affiliationsBecause the classical explanation for flight seems so distant from our experience an alternative `momentum flux change' explanation has often been didactically employed. We review the way in which lift on a moving airfoil arises and then show how the `momentum flux change' argument arises as the result of taking a particular limit of the momentum flux equations. We thus see where the latter may be used. Finally, we suggest a novel way of introducing the concept of lift, which allows a more direct experience of the fluid element.
Issue 4 (July 2000)
Received 19 January 2000
David Auerbach 2000 Eur. J. Phys. 21 289
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