24 Facts About Landing gear

Landing gear is the undercarriage of an aircraft or spacecraft that is used for takeoff or landing.

Third arrangement has the main and nose Landing gear located fore and aft of the center of gravity under the fuselage with outriggers on the wings.

Quadricycle Landing gear is similar to bicycle but with two sets of wheels displaced laterally in the fore and aft positions.

The experimental Fairchild XC-120 Packplane had quadricycle Landing gear located in the engine nacelles to allow unrestricted access beneath the fuselage for attaching a large freight container.

Blinking green lights or red lights indicate the Landing gear is in transit and neither up and locked or down and locked.

Safe landing would be possible if two main gear legs were torn off provided they were on opposite sides of the fuselage.

Beaching gear is detachable wheeled landing gear that allows a non-amphibious floatplane or flying boat to be maneuvered on land.

One exception to the need for this complexity in many WW II fighter aircraft was Japan's famous Zero fighter, whose main Landing gear stayed at a perpendicular angle to the centerline of the aircraft when extended, as seen from the side.

The B-52's landing gear is unique in that all four pairs of main wheels can be steered.

Since tandem aircraft cannot rotate for takeoff, the forward Landing gear must be long enough to give the wings the correct angle of attack during takeoff.

Some early U S Navy jet fighters were equipped with "kneeling" nose gear consisting of small steerable auxiliary wheels on short struts located forward of the primary nose gear, allowing the aircraft to be taxied tail-high with the primary nose gear retracted.

Aircraft landing gear includes devices to prevent fuselage contact with the ground by tipping back when the aircraft is being loaded.

Monowheel Landing gear is used on some powered aircraft, where drag reduction is a priority, such as the Europa Classic.

Light aircraft a type of landing gear which is economical to produce is a simple wooden arch laminated from ash, as used on some homebuilt aircraft.

The main advantage of such Landing gear is that no other shock-absorbing device is needed; the deflecting leaf provides the shock absorption.

Limited space available to stow landing gear has led to many complex retraction mechanisms, each unique to a particular aircraft.

In large airliners, for example, the tiller is often used as the sole means of steering during taxi, and then the rudder is used to steer during takeoff and landing, so that both aerodynamic control surfaces and the landing gear can be controlled simultaneously when the aircraft is moving at aerodynamic speeds.

The total main Landing gear load is calculated assuming that the aircraft is taxiing at low speed without braking:.

Conventional landing gear is designed to absorb the energy of a landing and doesn't perform well at reducing ground-induced vibrations in the airframe during landing ground roll, taxi and take-off.

Malfunctions or human errors related to retractable landing gear have been the cause of numerous accidents and incidents throughout aviation history.

Once in position the landing gear is mechanically locked and safe to use for landing.

Landing gear has traditionally not been used on the vast majority of launch vehicles, which take off vertically and are destroyed on falling back to earth.

The first test of the extensible landing gear was successfully accomplished in April 2014 on a Falcon 9 returning from an orbital launch and was the first successful controlled ocean soft touchdown of a liquid-rocket-engine orbital booster.

Landing gear legs had become an ordinary operational part of orbital spaceflight launch vehicles.