Tricycle undercarriage where there are two main wheels (or wheel assemblies) under the wings and a third smaller wheel in the nose.The same helicopter arrangement is called tricycle tailwheel.
Conventional landing gear or "taildragger", where there are two main wheels towards the front of the aircraft and a single, much smaller, wheel or skid at the rear.Wheeled undercarriages normally come in two types: 1.10.4 Variable axial position of main wheels.1.10.3 Rearwards and sideways retraction.The three largest are Safran Landing Systems, Collins Aerospace (part of Raytheon Technologies) and Héroux-Devtek. Given their varied designs and applications, there exists dozens of specialized landing gear manufacturers. įor launch vehicles and spacecraft landers, the landing gear usually only supports the vehicle on landing, and is not used for takeoff or surface movement. These include: no landing gear (to save weight), made possible by operating from a catapult cradle and flexible landing deck: air cushion (to enable operation over a wide range of ground obstacles and water/snow/ice) tracked (to reduce runway loading). Some unusual landing gear have been evaluated experimentally. Faster aircraft have retractable undercarriages, which fold away during flight to reduce drag. Wheeled landing gear is the most common, with skis or floats needed to operate from snow/ice/water and skids for vertical operation on land.
For aircraft, Stinton makes the terminology distinction undercarriage (British) = landing gear (US).įor aircraft, the landing gear supports the craft when it is not flying, allowing it to take off, land, and taxi without damage. It was also formerly called alighting gear by some manufacturers, such as the Glenn L. For aircraft it is generally needed for both. Landing gear is the undercarriage of an aircraft or spacecraft and may be used for either takeoff or landing. The retractable main landing gear of a Boeing 747
0 kommentar(er)
