High-lift devices are aerodynamic mechanisms or surfaces installed on aircraft wings to enhance lift during takeoff and landing phases. These devices modify the wing’s geometry temporarily to increase the wing area, change its camber, or both, thereby allowing the aircraft to generate more lift at lower speeds.
Where:
- The lift coefficient of the aircraft without any high-lift devices deployed is .
- The additional lift coefficient generated by the deployment of the high-lift devices, typically flaps or slats, is .