‘____’ has the most significant effect on a Wing’s Spanwise Pressure Gradient?
Aspect Ratio.
Which type of Aircraft is associated with having a High Aspect Ratio?
Gliders.
For a given Aspect Ratio, a wing with an elliptical pressure distribution is the ‘____’ efficient?
Most.
True or False. An elliptical wing produces the most Lift, for the smallest total energy lost in Tip Vortices?
True.
True or False. An elliptical wing doesn’t produce a constant section Lift Coefficient across the entire span?
False. It does.
The rectangular wing has a ‘____’ Wingtip Vortices and the ‘____’ Downwash towards the Wing Tips (2)?
- Larger.
- Greater.
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)?
- Less.
- Increases.
- More.
- Large.
A straight wing with a Taper Ratio of about ‘____’ can approach the efficiency of the elliptical wing?
0.5.
Define the effects of Downwash on a Swept Wing (2)?
- Greatest at Wing Root.
- Smaller closer to Wing Tip.
True or False. The Downwash on a Swept Wing increases due to the Tip Vortices?
True.
Where on a Swept Wing is the Effective Angle of Attack and Lift Coefficient greatest?
Close to the Wing Tip.
What are the common Taper Ratios for Swept-back Wings?
0.4 to 0.25.
Name five types of planform wing designs?
- Rectangular.
- Sweepback + Taper.
- Elliptical.
- Taper (0.5).
- Delta.
Define Washout?
Reducing Lift distribution across the span of a Wing.
Name two ways to reducing Lift being generated on the Wing by design?
- Washout.
- Camber.