Our Schools > Elementary School > Educators > Trina Scanlan - Title I > What is IRLA?
The vertical stabilizer is to provide additional anti torque force to the fuselage once the aircraft has forward motion and airflow across the lifting surface. The design makes use of forward motion and the resulting airflow to create an anti torq...
Both the horizontal stabilizer and the elevator contribute to pitch stability, but only the elevators provide pitch control. They do so by decreasing or increasing the downward force created by the stabilizer 1  : an increased downward force, produced by up elevator, forces the tail down and the nose up. 2  At constant speed, the increased wing angle of attack causes a greater lift to be produced by the wing, accelerating the aircraft upwards.