skid

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skid

1. Chiefly US and Canadian one of the logs forming a skidway
2. a support on which heavy objects may be stored and moved short distances by sliding
3. a shoe or drag used to apply pressure to the metal rim of a wheel to act as a brake

Skid

 

the locking of the wheels of a vehicle—for example, a motor vehicle, a streetcar, or railroad rolling stock—while the vehicle is in motion. As a result of such locking, the wheels slide over the bearing surface rather than turn.

A skid occurs when the braking force exceeds the force of adhesion between the wheels and the surface of a road or track, for example, in the presence of glaze ice or after rain. Skidding increases the braking distance and may cause traffic accidents. As a rule, the skidding of the rear wheels of a motor vehicle results in sideslip of the rear axle.

To avoid skids, modern motor vehicles may be equipped with automatic devices that prevent the wheels from locking.

skid

[skid]
(aerospace engineering)
The metal bar or runner used as part of the landing gear of helicopters and planes.
(engineering)
A device attached to a chain and placed under a wheel to prevent its turning when descending a steep hill.
A timber, bar, rail, or log placed under a heavy object when it is being moved over bare ground.
A wood or metal platform support on wheels, legs, or runners used for handling and moving material. Also known as skid platform.
(mechanical engineering)
A brake for a power machine.
(mining engineering)
An arrangement upon which certain coal-cutting machines travel along the working faces.

skid

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skid
skidclick for a larger image
i. An uncoordinated turn in which the airplane moves inside the turn because of an insufficient aileron or excessive rudder.
ii. In helicopters, a fixed tubular landing gear, often provided with small auxiliary wheels to provide ground mobility.
iii. A rigid ski-shaped member projecting ahead of the landing gear to prevent them from nosing over.
iv. A support for the tail-wheel on the ground in airplanes of early years.
v. A member mounted at the bottom of the aft end of the fuselage of an aircraft with a tricycle undercarriage. The skid absorbs the shock and prevents damage to the aircraft structure if the skid touches the ground either on the takeoff or the landing.