Wing Design Flashcards

1
Q

An efficient wing design will produce required lift whilst minimising blank drag.

A

Induced drag.

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2
Q

At what speed is induced drag more likely?

A

Slow speeds.

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3
Q

What does a high aspect ratio do to vortex strength?

A

Decreases it.

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4
Q

Where is downwash strongest on a wing?

A

The tip.

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5
Q

What angle of attack can cause a stall?

A

Effective.

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6
Q

What airflow increases as downwash increases?

A

Effective airflow.

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7
Q

What strength of vortices of the wing will stall first based on vortices?

A

The weaker vortices.

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8
Q

What part of the wing will stall first on a rectangular wing?

A

At the root.

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9
Q

What happens above the CLmax?

A

Stalling.

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10
Q

What type of stall is prevented on a rectangular wing which is why they’re used on training aircraft?

A

Wing drop stall.

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11
Q

Where does a stall occur first on a tapered wing?

A

The middle.

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12
Q

Where is a stall most likely to occur on an elliptical wing?

A

All of it.

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13
Q

Where does a stall occur first on a swept wing?

A

The tip.

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14
Q

Where does the centre of pressure move on a swept wing when it stalls?

A

Forward and inwards.

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15
Q

When the centre of pressure moves forwards during a stall on a swept wing, what happens to the pitch.

A

The aircraft pitches up.

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16
Q

How do you prevent a tip stall using washout?

A

You apply geometric or aerodynamic washout.

17
Q

What does a stall strip do?

A

Promotes a stall at the wing root.