A slot normally located on the trailing edge is used to deflect air from below the aircraft to the upper wing to reduce the stall speed and allow the aircraft to fly at lower speeds for shorter takeoff and landings. Slats - like flaps - are a lift-generating device, however they are found on the leading edge of a wing and, like flaps, they extend to increase the camber of the wing and produce more lift, allowing the aircraft to takeoff and land at a slower airspeed. Slats and slots A trim tab is a small control surface attached to the main primary control surfaces. Trim tabs can be located on ailerons, rudders and the elevator. Most training aircraft only have trim tabs on the elevator. A trim tab is basically a secondary flight control surface which allows the pilot to reduce the pressure on the control column. As an example of how they work, let’s look at an elevator trim tab. During a climb the elevator is angled down and the elevator is now experiencing a lot more airflow pushing (dynamic pressure) against the entire surface of the elevator. This airflow forces the elevator back to the neutral position. The trim tab acts like a small wing, when the pilot chooses the desired elevator position, the trim tab can be set to create an opposite lift force to maintain the position of the elevator. The elevator will not stay in this position without any input from the pilot. Trim tabs Flaps are a lift-generating device which allows the aircraft to produce more lift by changing the camber, or shape, of the wing. The use of flap lowers the aircraft stall speed. By creating more lift the aircraft can takeoff and land at a lower speed, and the result is less runway is required for both takeoff and landing. Flaps Ch.2 - How an aircraft generates lift
RkJQdWJsaXNoZXIy MTMwODg4Mw==