Landing gear is a crucial component of an aircraft, designed to support the weight of the plane during takeoff, landing, and while on the ground. It typically consists of wheels, struts, and brakes, allowing the aircraft to roll on runways and taxiways. The design varies depending on the type of aircraft, with some using retractable gear that folds into the fuselage during flight to reduce drag. The landing gear must be strong and reliable, as it endures significant forces during landings. It also includes shock absorbers to cushion the impact when the aircraft touches down. Proper maintenance of the landing gear is essential for the safety of both the aircraft and its passengers.