What happens to the landing gear during retraction?

The landing gear folding back against the fuselage during retraction is a common design feature in many aircraft. This action minimizes aerodynamic drag and allows for a smoother flight profile. When the landing gear is retracted, it typically folds up into designated compartments within the aircraft's structure. This design not only enhances performance but also provides a clean aerodynamic shape.

The locking mechanism safeguards the landing gear in its retracted position, ensuring it remains secure during flight and preventing unintentional deployment while in the air. By storing the landing gear in this manner, aircraft can achieve better fuel efficiency and improved aerodynamics, as opposed to having the gear protrude into the airflow.

The other options describe scenarios that do not commonly occur in aircraft operation. For instance, locking the gear in a vertical position would not be practical as it would create significant drag. Aligning the gear parallel to the wings is not a typical feature, and completely removing the gear from the aircraft is not a feasible operation during landing or takeoff phases.