Tailplane

The horizontal stabilizer is the horizontal area at the rear of the tail of an airplane. It is usually made of a fixed part, the horizontal stabilizer, and a movable elevator. It exerts the static straight flight on the rear of a downward force to compensate for the nose-down torque of the Gewichtstrimmung. When ducks construction called the horizontal stabilizer is positioned in front of the wings and performs the static straight flight on the bow of an upward force to balance the nose-heavy moment of Gewichtstrimmung from. The elevator is used to stabilize and control the attitude of the transverse axis and therefore to control the angle of attack and speed.

Designs

The elevator can be so attached to the tail of the airplane by the wing, but even before that ( Canard ). In classical arrangement at the rear of the aircraft different designs are also possible. Thus, in the T-tail tailplane is not on the hull, but the top is mounted on the vertical tail ( see, eg, Boeing 727). The so-called pendulum rudder (also known as " stabilator " or "flying tailplane " ) are the functions of rudder and fin in a single movable as a whole combines surface (eg when the Piper PA -28). Similarly, an arrangement halfway up the vertical tail fin (see: Sud Aviation Caravelle ).

Elevator trim

When trimmable horizontal stabilizer, which is used primarily in modern, larger aircraft, the entire horizontal stabilizer assembly for dynamic trim in the manner of a pendulum rudder may change its angle of attack, while the actual height is controlled by the battered at the fin rudder flaps. With smaller aircraft are often trim tab, or a spring trim acting on the control surfaces, for use; in these cases, the horizontal stabilizer is usually rigidly connected to the fuselage.