What type of landing gear is designed to reduce drag?

The design of retractable landing gear is specifically aimed at reducing drag during flight. When the landing gear is extended, it increases the aircraft's overall drag, which can negatively impact speed and fuel efficiency. By retracting the landing gear into the fuselage or wings, the aircraft minimizes the surface area exposed to airflow and thus reduces air resistance. This streamlined profile allows the aircraft to achieve higher speeds and improved aerodynamic performance during flight.

In contrast, fixed landing gear remains exposed at all times, leading to increased drag throughout the flight. While conventional and tricycle landing gears refer to the configuration of the landing gear system, both can include fixed or retractable designs. The specific focus of this question is on the aerodynamic advantage offered by retractable landing gear.