Questões ATP_pag129

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440. Why do some airplanes equipped with inboard/outboard ailerons use the outboards for
slow flight only?
 A. Increased surface area provides greater controllability with flap extension.
 B. Aerodynamic loads on the outboard ailerons tend to twist the wingtips at high speeds.
 C.
Locking out the outboard ailerons in high-speed flight provides variable flight control
feel.
Aerodynamic loads on the outboard ailerons tend to twist the wing tips at high speeds.
This results in deformation great enough to nullify the effect of aileron deflection and
create rolling moments opposite to the direction commanded. Because of this,
outboard ailerons are used for slow flight only.
441. If an aircraft with a gross weight of 2,000 pounds were subjected to a total load of
6,000 pounds in flight, the load factor would be
 A. 2 Gs.
 B. 3 Gs.
 C. 9 Gs.
Load factor is the ratio of the total load supported by the airplane's wings to the actual
weight of the airplane and its contents, or the actual load supported by the wings
divided by the total weight of the airplane: 6,000 pounds/2,000 pounds = 3 Gs
442. What effect does the leading edge slot in the wing have on performance?
 A. Decreases profile drag.
 B. Changes the stalling angle of attack to a higher angle.
 C. Decelerates the upper surface boundary layer air.
The slot delays stall to a higher angle of attack.
Answer (A) is incorrect because, at low angles of attack, there is little or no profile
drag increase. At high angles of attack, the slot delays the stall characteristics of the
wing. Answer (C) is incorrect because the leading-edge slot actually increases airflow
on the upper wing surface to allow higher angles of attack.
443. Which direction from the primary control surface does a servo tab move?
 A. Same direction.
 B. Opposite direction.
 C. Remains fixed for all positions.
The servo tab attached to the flight control moves in the opposite direction, to assist in
moving and holding the flight control by way of the airflow against it.
Answer (A) is incorrect because an anti-servo tab, as found on the trailing edge of
stabilators, moves in the same direction as the stabilator to provide a feel to the pilot
control pressures. Answer (C) is incorrect because servo tabs move in response to the
pilot's control movements.