Unit 4 Review 2

Front

Lift on a wing is most properly defined as the __________.

Back

differential pressure acting perpendicular to the chord of the wing, increased pressure resulting from air flow over the upper camber of an airfoil, which acts perpendicular to the mean camber, force acting perpendicular to the relative wind, the force that opposes drag

Front

The reaction of downwash causes a downward reaction according to Newton’s Third Law of Motion.

Back

False

Front

Which of the following is true relative to a changing angle of attack? A decrease in angle of attack will increase the pressure below the wing and increase drag; An increase in angle of attack will decrease the pressure above the wing and increase lift; An increase in angle of attack will increase the pressure above the wing and increase drag; An decrease in angle of attack will increase lift

Back

An increase in angle of attack will decrease the pressure above the wing and increase lift

Front

What is the problem with the Longer Path theory (or Equal Transit Time theory) regarding air molecules flowing over a wing?

Back

It assumes that molecules of air arriving at the front of the wing at the same time must also arrive at the back edge of the wing at the same time.

Front

If the velocity of an airplane is doubled, the lift will _________.

Back

increase by a factor of 4

Front

An aircraft always stalls at the same _________ regardless of airspeed, weight, or any other factor.

Back

angle of attack

Front

What safety measures do airplane designers take in regard to stalls? Select all that apply: Ensure the airplane is as controllable as possible during a stall. Ensure a stall is delayed as long as possible. Ensure the pilot is warned of a possible stall. All of the above

Back

All of the above

Front

The center of gravity of an airplane can be determined by which method?

Back

Dividing total moments by total weight

Front

What can happen when the center of gravity (CG) of an airplane is forward of its acceptable CG range?

Back

Elevator effectiveness becomes limited creating insufficient nose-up force for landing.

Front

Which of the following is created by the resistance of air moving across the surface of an airplane?
Particle drag, Induced drag, Skin friction drag, Total drag

Back

Skin friction drag