Сборник технических текстов для домашнего чтения по английскому языку. Морозова М.А. - 14 стр.

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same thing is operating here that was operating on the wings, only in a different di-
rection). If the controls are reversed, the opposite happens.
Effects of Back Stick Movement
Backward stick movement forces the tail down and the nose up. This rotation
occurs around the center of gravity of the airplane. Initially the airplane, even though
its nose is up, is still headed in the same direction - the only thing that has changed is
the angle of attack. But an increase in the angle of attack results in an increase in lift,
so now the airplane starts to go up. Then, like an arrow, it points into the wind, in-
creasing its pitch. This process continues, viewed from the cockpit as an increase in
pitch, until the pilot moves the stick forward to a neutral position and stabilizes the
pitch.
The temptation to think that the stick directly raises or lowers the nose is very
strong, and most of the time, roughly correct. But if the stick is moved back when the
airplane is very close to the stall the aircraft will not pitch up much, if at all. This
back stick movement and increase in AOA will stall the wing, causing a loss of lift
and acceleration downward: now the pitch moves opposite the stick movement.
The Ailerons
The ailerons are a much simpler control than the elevator. Located near the
wing tips on the trailing edge
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of the wing, they are used in unison to change the
amount of lift each wing is producing and roll the airplane.
When the pilot moves the stick side-to-side from center, the ailerons move in
opposite directions. In a roll to the right (as viewed from the cockpit), the right ai-
leron goes up and the left aileron goes down. Each aileron serves to change how that
part of the wing deflects the air and thus increases or decreases the amount of lift
produced by each wing. The down aileron forces the air down harder, resulting in an
increase in lift and the up aileron decreases the downward force, resulting in a de-
crease in lift. In the case of a right roll, the decreased lift on the right side and in-
creased lift on the left side result in a roll to the right.
Aileron Effects
Operating the ailerons causes an effect called adverse yaw. Adverse yaw is the
result of an increase in drag on the wing with the down aileron, or "upgoing" wing.
This wing, since it is forcing the air down harder than the "downgoing" wing and
producing more lift, also produces more drag. The drag pulls the wing back and
causes yaw. If this yaw is not corrected with rudder, the roll is said to be "uncoordi-
nated."
The Rudder
The rudder is controlled by the "rudder pedals" located on the floor of the air-
craft. They are both connected to the rudder so that when one or the other pedals is
depressed, it moves the rudder in the desired direction. The rudder, connected to the
vertical stabilizer, then starts to deflect air much like a wing, only the resulting force
is to the side. This force causes a change in yaw. As mentioned earlier, the rudder is
not used very often, but when it is needed (e.g., in a crosswind), its presence is appre-
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trailing edge – задняя кромка

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