Discussion
Statement I: Washout makes the wing tip stall before the root.
Statement II: Taper alone tends to raise the local lift coefficient towards the tip.
In the light of the above statements, choose the correct answer.
Answer: C
Correct answer: Statement I is incorrect but Statement II is correct
Statement II is correct and explains why statement I is the reverse of the truth. Taper reduces the chord faster than it reduces the local lift, so the local lift coefficient rises towards the tip and the tip would stall first. Washout is applied precisely to counteract that, setting the tip at a lower incidence so that the root stalls first and aileron authority is retained through the stall.
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