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2. VC-137C SAM 26000 - Wikipedia

   en.wikipedia.org/wiki/VC-137C_SAM_26000

   A VC-137C with Air Force serial number 62-6000, [a] SAM 26000 was a customized Boeing 707. It entered service in 1962 during the administration of John F. Kennedy and was replaced in presidential service in 1972 but kept as a backup. The aircraft was finally retired in 1998 and is now on display at the National Museum of the United States Air ...

3. S-cam - Wikipedia

   en.wikipedia.org/wiki/S-cam

   S-cam. An S-cam is part of a braking system used in heavy vehicles such as trucks and wheeled machinery. It consists of a shaft, usually around 4 to 25 inches long, turned at one end by means of an air-powered brake booster and lever with an S-shaped cam at the wheel end. Turning the shaft pushes the brake shoes against the drum, producing ...

4. Air Force One - Wikipedia

   en.wikipedia.org/wiki/Air_Force_One

   SAM 29000, one of two VC-25As used as Air Force One, approaching Dayton International Airport in October 2012. Air Force One is the official air traffic control designated call sign for a United States Air Force aircraft carrying the president of the United States. The term is commonly used to denote U.S. Air Force aircraft modified and used to ...

5. Air brake (road vehicle) - Wikipedia

   en.wikipedia.org/wiki/Air_brake_(road_vehicle)

   Air brake (road vehicle) An air brake or, more formally, a compressed-air-brake system, is a type of friction brake for vehicles in which compressed air pressing on a piston is used to both release the parking/emergency brakes in order to move the vehicle, and also to apply pressure to the brake pads or brake shoes to slow and stop the vehicle.

6. Locking differential - Wikipedia

   en.wikipedia.org/wiki/Locking_differential

   Locking differential. A locking differential is a mechanical component, commonly used in vehicles, designed to overcome the chief limitation of a standard open differential by essentially "locking" both wheels on an axle together as if on a common shaft. This forces both wheels to turn in unison, regardless of the traction (or lack thereof ...

7. Anti-lock braking system - Wikipedia

   en.wikipedia.org/wiki/Anti-lock_braking_system

   An anti-lock braking system ( ABS) is a safety anti- skid braking system used on aircraft and on land vehicles, such as cars, motorcycles, trucks, and buses. [1] ABS operates by preventing the wheels from locking up during braking, thereby maintaining tractive contact with the road surface and allowing the driver to maintain more control over ...