Aircraft Landing Gear Systems

Last updated on January 29th, 2020 at 06:43 pm

 Aircraft Landing Gear Systems

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Chapter 01: Aircraft Structures (70 pages),
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Aircraft Landing Gear Systems

Numerous configurations of landing gear types can be aircraft Landing Gear Systems
found. Additionally, combinations of two types of gear are  common. Amphibious aircraft are designed with gear that allow landings to be made on water or dry land. The gear features pontoons for water landing with extendable wheels aircraft  for landings on hard surfaces. A similar system is used to  allow the use of skis and wheels on aircraft that operate on  both slippery, frozen surfaces and dry runways. Typically, the  skis are retractable to allow use of the wheels when needed.
Figure 13-2 illustrates this type of landing gear.
NOTE: References to auxiliary landing gear refer to the aircraft Landing Gear Systems nose gear, tail gear, or outrigger-type gear on any particular aircraft. Main landing gear are the two or more large gear aircraft Landing Gear Systems located close to the aircraft’s center of gravity.
Landing Gear Arrangement  Three basic arrangements of landing gear are used: tail wheeltype  landing gear (also known as conventional gear), tandem landing gear, and tricycle-type landing gear.

Tail Wheel-Type Landing Gear  Tail wheel-type landing gear is also known as conventional gear because many early aircraft use this type of arrangement.
The main gear are located forward of the center of gravity, causing the tail to require support from a third wheel aircraft Landing Gear Systems assembly. A few early aircraft designs use a skid rather than a tail wheel. This helps slow the aircraft upon landing  and provides directional stability. The resulting angle of  the aircraft fuselage, when fitted with conventional gear, allows the use of a long propeller that compensates for older, underpowered engine design. The increased clearance of the aircraft Landing Gear Systems forward fuselage offered by tail wheel-type landing gear is also advantageous when operating in and out of non-paved  runways. Today, aircraft are manufactured with conventional aircraft gear for this reason and for the weight savings accompanying the relatively light tail wheel assembly.


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