Questões ATP_pag126

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429. What is a purpose of flight spoilers?
 A. Increase the camber of the wing.
 B. Reduce lift without decreasing airspeed.
 C. Direct airflow over the top of the wing at high angles of attack.
The purpose of the spoilers is to disturb the smooth airflow across the top of the wing
thereby creating an increased amount of drag and a reduced amount of lift.
Answer (A) is incorrect because flaps (not spoilers) increase the camber of the wing.
Answer (C) is incorrect because slots and slats direct airflow over the top of the wing
at high angles of attack.
430. What is the purpose of a servo tab?
 A. Move the flight controls in the event of manual reversion.
 B.
Reduce control forces by deflecting in the proper direction to move a primary flight
control.
 C.
Prevent a control surface from moving to a full-deflection position due to aerodynamic
forces.
The servo tab moves in response to the cockpit control. The force of the airflow on the
servo tab then moves the primary control surface.
Answer (A) is incorrect because, in the event of 'manual reversion' on some transport
category aircraft, the control tabs would move the flight controls. Answer (C) is
incorrect because the purpose of the anti-servo tab is to preclude full deflection of
control surfaces.
431. Swept wings causes a significant
 A. increase in effectiveness of flaps.
 B. reduction in effectiveness of flaps.
 C. flap actuation reliability issue.
Thin airfoil sections with sweepback impose distinct limitations on the effectiveness of
flaps.
432. What is a difference between the fowler flap system and split flap system?
 A. Fowler flaps produce the greatest change in pitching moment.
 B. Fowler flaps produce more drag.
 C. Split flaps cause the greatest change in twisting loads.