Induced drag
- is equal to the profile drag at Vmd.
- is equal to the profile drag at the stalling speed.
- is never equal to the profile drag.
Explanation
Induced drag falls with speed while profile (parasite) drag rises with speed; the total-drag curve is minimum where these two are equal. That speed is the minimum-drag speed (Vmd), so by definition induced drag equals profile drag at Vmd, not at the stall.
rizkaramat asking:
Vmd ?
Community Comments (2)
M
mwongela Posts: 18 20.11.2012 / 08:43
minimum drag speed
D
dimky Posts: 514 20.11.2012 / 18:00
Check this picture: http://upload.wikimedia.org/wikipedia/commons/0/04/Drag_Curve_2.jpg
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