C10 - Designing a Wing Flashcards Preview

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Flashcards in C10 - Designing a Wing Deck (15)
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1
Q

‘____’ has the most significant effect on a Wing’s Spanwise Pressure Gradient?

A

Aspect Ratio.

2
Q

Which type of Aircraft is associated with having a High Aspect Ratio?

A

Gliders.

3
Q

For a given Aspect Ratio, a wing with an elliptical pressure distribution is the ‘____’ efficient?

A

Most.

4
Q

True or False. An elliptical wing produces the most Lift, for the smallest total energy lost in Tip Vortices?

A

True.

5
Q

True or False. An elliptical wing doesn’t produce a constant section Lift Coefficient across the entire span?

A

False. It does.

6
Q

The rectangular wing has a ‘____’ Wingtip Vortices and the ‘____’ Downwash towards the Wing Tips (2)?

A
  • Larger.

- Greater.

7
Q

A straight wing with taper produces slightly ‘____’ Downwash mid-wing. Downwash ‘____’ slightly towards the Wing Root and ‘____’ significantly towards the Wing Tip, where the Tip Vortices are ‘____’ (4)?

A
  • Less.
  • Increases.
  • More.
  • Large.
8
Q

A straight wing with a Taper Ratio of about ‘____’ can approach the efficiency of the elliptical wing?

A

0.5.

9
Q

Define the effects of Downwash on a Swept Wing (2)?

A
  • Greatest at Wing Root.

- Smaller closer to Wing Tip.

10
Q

True or False. The Downwash on a Swept Wing increases due to the Tip Vortices?

A

True.

11
Q

Where on a Swept Wing is the Effective Angle of Attack and Lift Coefficient greatest?

A

Close to the Wing Tip.

12
Q

What are the common Taper Ratios for Swept-back Wings?

A

0.4 to 0.25.

13
Q

Name five types of planform wing designs?

A
  • Rectangular.
  • Sweepback + Taper.
  • Elliptical.
  • Taper (0.5).
  • Delta.
14
Q

Define Washout?

A

Reducing Lift distribution across the span of a Wing.

15
Q

Name two ways to reducing Lift being generated on the Wing by design?

A
  • Washout.

- Camber.