Let down flaps, also known as wing flaps, are an essential part of an aircraft's wing structure. These movable sections of the wing are used to increase lift and reduce the speed at which an aircraft can safely take off and land. There are a few synonyms for let down flaps, such as trailing edge devices, flaperons, ailerons, and elevons, depending on their specific design and function. Trailing edge devices are typically found on commercial airliners and larger aircraft, while flaperons, ailerons, and elevons are common on smaller aircraft and military planes. Regardless of their name, let down flaps are crucial in ensuring safe and efficient flight operations.