Editing Conventional landing gear (section)

==History==
[[File:De Havilland DH.82 Tiger Moth - undercarriage tailwheel detail.jpg|thumb|Tailwheel detail on a [[de Havilland Tiger Moth|Tiger Moth biplane]]]]
[[File:AgustaWestland Apache AH1 10 (5968018661).jpg|thumb|Like many attack helicopters, the [[AgustaWestland Apache]] has a tailwheel to allow an unobstructed arc of fire for the gun.]]
In early aircraft, a tailskid made of metal or wood was used to support the tail on the ground. In most modern aircraft with conventional landing gear, a small articulated wheel assembly is attached to the rearmost part of the [[airframe]] in place of the skid. This wheel may be steered by the pilot through a connection to the rudder pedals, allowing the rudder and tailwheel to move together.<ref name="GroundUp" /><ref name="Brandon">{{cite web|last=Brandon |first=John |title=Recreational Aircraft Australia - Groundschool |url=http://www.auf.asn.au/groundschool/umodule11.html#handy |access-date=2008-12-05 |archive-url=https://web.archive.org/web/20080719131723/http://www.auf.asn.au/groundschool/umodule11.html#handy |archive-date=2008-07-19 |url-status=dead }}</ref>

Before aircraft commonly used tailwheels, many aircraft (like a number of First World War [[Sopwith Aviation Company|Sopwith]] aircraft, such as the [[Sopwith Camel|Camel]] fighter) were equipped with steerable tailskids, which operate similarly to a tailwheel. When the pilot pressed the right rudder pedal—or the right footrest of a "rudder bar" in World War I—the skid pivoted to the right, creating more drag on that side of the plane and causing it to turn to the right. While less effective than a steerable wheel, it gave the pilot some control of the direction the craft was moving while taxiing or beginning the takeoff run, before there was enough airflow over the rudder for it to become effective.

Another form of control, which is less common now than it once was, is to steer using "[[differential braking]]", in which the tailwheel is a simple, freely [[caster]]ing mechanism, and the aircraft is steered by applying brakes to one of the mainwheels in order to turn in that direction.  This is also used on some tricycle gear aircraft, with the nosewheel being the freely castering wheel instead. Like the steerable tailwheel/skid, it is usually integrated with the rudder pedals on the craft to allow an easy transition between wheeled and aerodynamic control.{{Citation needed|date=February 2013}}