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Beyond this, aircraft landing gear systems are categorized further as either fixed or retractable landing gear. Fixed landing gear hangs under an aircraft during flight, whereas retractable landing gear is stored inside once the aircraft is in the sky.
Airplanes with traditional landing gear are sometimes referred to as tailwheel airplanes. The two main wheels are connected to the airframe forward of its centre of gravity (CG) and support most of the importance of the aircraft. The tailwheel is located at the very back of the fuselage and supplies a third point of support.
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