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7 Cards in this Set

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The very thin layer of air lying over the surface of the wing is called

The Boundary

Transition


Boundary


Turbulent


Laminar

Conventional Airfoils are generally ticket at ___ % of the cord.

25%

15%


25%


50%


60%

Laminar flow airfoils reduce drag by maintaining the_______________flow of air throughout a greater percentage of the___________

Laminar, Chord

Turbulent, Chord


Turbulent, Span


Laminar, Chord


Laminar, Span



Aspect Ratio is calculated by:

Dividing the span by the average cord.

Dividing the span by the average cord.


Dividing the average cord by the span.


Dividing the weight by the coefficient of lift.


Dividing the weight by the coefficient of drag.

Decreasing the angle of incidence at the wing tip is called:

Wash-Out

Wash-In


Wash-Up


Wash-Out


Wash-Down

Which of the following is not a wing tip modification designed to increase lift/reduce drag?

Wing fences

Wing-tip fuel tanks


Winglets


Drooping the wingtips


Wing fences

Auxiliary airfoils that move out in front of the leading edge at high angles of attack are called?

Slats

Slats


Flaps


Wing fences


Slots