Aeromodelling

Generally, high lift devices used on aircraft to produce higher lift to shorten the landing and take-off distances with slower flying speed. Normally, an aircraft wings designed for cruise conditions and it not performed the best at low flying speed. High lift devices implemented on the wing to change the wing geometry profile to increase lift at the lower flying speed. These devices are installed at the trailing edge of the aircraft wing.

Flaps: Flats are located at the inboard trailing edge of the wing. The flap devices served two purposes in the flight system, which is to increase drag on the wing to slow down the aircraft, another function to increase the lift on the wing.

Slots: Slots are passageways built into the wing structure at the leading edge. When the aircraft wings approaches at high angles of attack in the air stream, the airflows pass through the slot and over the wing, it tend to smooth out the turbulence due to eddies. The smooth airflow on the wing results in improves of the stalling angle of the wing.

Slats: Slats are auxiliary airfoils fitted to the leading edge of the wing. When the aircraft wing approach at high angles of attack, the slat automatically move forward and ahead from the wing. The airflow through and over the slat that tends to smooth out eddies forming over the wing. Slats are usually fitted to the leading edge near the wing tips to improve lateral control.