Types of Landing Gear Design

Landing gear is designed to support the load of the aircraft for surface operations. Various types of landing gears exist, manufactured  for the intended operation or desires performance for the aircraft.

Landing Gear Design:

Landing Gear Design are Depending on an aircraft’s requirement of operation. Landing gear may be designed as either:

  • Fixed Gear
  • Retractable Gear
  1. TRICYCLE
  2. TAILDRAGGER
  3. FLOATS
  4. TANDEM WITH OUTRIGGERS
  5. MONOWHEEL WITH OUTRIGGERS
  6. RETRACTABLE

TRICYCLE

Tricycle gear is a type of aircraft undercarriage, or landing gear, arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle gear aircraft are the easiest to take-off, land and taxi, and consequently the configuration is the most widely used on aircraft.

TAILDRAGGER

Tailwheel-type landing gear, is an aircraft undercarriage consisting of two main wheels forward of the center of gravity and a small wheel or skid to support the tail.The term taildragger is also used, although some claim it should apply only to those aircraft with a tailskid rather than a wheel.

FLOATS

floatplane is a type of seaplane with one or more slender floats mounted under the fuselage to provide buoyancy. By contrast, a flying boat uses its fuselage for buoyancy. Either type of seaplane may also have landing gear suitable for land, making the vehicle an amphibious aircraft. British usage is to call “floatplanes” “seaplanes” rather than use the term “seaplane” to refer to both floatplanes and flying boats.

TANDEM WITH OUTRIGGERS

This term is used for a landing gear that consists of retractable two wheel assemblies mounted on the aircraft centerline one behind the other. Additional supports may include smaller wheels or skids. Tandem landing gear is also known as bicycle landing gear.

MONOWHEEL WITH OUTRIGGERS

The Mono wheel was the first model of the Europa Classic in 1995. With a single retractable wheel in the centre of the fuselage and retractable outriggers on each wing the overall drag of the aircraft is minimised and therefore you have the advantage of high speed with excellent fuel economy.

RETRACTABLE

To decrease drag in flight undercarriages retract into the wings and/or fuselage with wheels flush with the surrounding surface or concealed behind flush-mounted doors; this is called retractable gear.

Fixed Gear Vs Retractable Landing Gear:

Fixed gear

Fixed gear is designed to simplify design and operation Advantages — Always deployed Low cost Disadvantages — Creates constant drag, mitigated by the use of a cover called a fairing

Retractable Landing Gear

A retractable gear is designed to streamline the airplane by allowing the landing gear to be stowed inside the structure during cruising flight

Advantages — Increased climb performance and higher cruise airspeeds due to the resulting decrease in drag

Disadvantages: Increased weight & Increased cost

Author: TECH SINGH Urs

TECH LEARNING WITH NEW VISION

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