The induced drag of an aircraft
- increases if the aspect ratio is increased.
- decreases with increasing speed.
- increases with increasing speed.
Explanation
As speed rises, a given weight is supported at a lower angle of attack, weakening the tip vortices, so induced drag falls (it varies inversely with the square of speed). Induced drag also reduces, not increases, when aspect ratio is raised, so that option is wrong.
bennguli asking:
can somewone explain this
Community Comments (2)
A
arcana_force Posts: 14 05.06.2018 / 22:20
Induced drag is a direct consequence of the creation of lift by the wing. Since the Coefficient of Lift increases as the AOA increases, induced drag is inversely proportional to the square of speed. As speed increases induced drag decreases (but all other drag increases [parasitic]).
J
Jordi Posts: 198 26.06.2020 / 12:33
this happens because induced drug is inversely proportional to speed.I think it is the only type of drag which does that.
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