The landing gear absorbs the aircraft during the landing and when on the ground.
Typically the landing gear consists of three wheels, two main wheels which are located on either side of the fuselage and a third whell positioned either at the front or rear of the airplane.
Landing gear employing a rear mounted wheel is called CONVENTIONAL LANDING GEAR.
These type of airplanes are also called TAILWHEEL airplanes.
TRICYCLE LANDING GEAR is used on most aircrafts today, including almost all modern airliners.
