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  2. Retarder (mechanical engineering) - Wikipedia

    en.wikipedia.org/wiki/Retarder_(mechanical...

    Exhaust brakes are simpler in operation than an engine brake.Essentially, the exhaust pipe of the vehicle is restricted by a valve.This raises the pressure in the exhaust system, forcing the engine to work harder on the exhaust stroke of its cylinders, so again the engine is acting as an air compressor, with the power required to compress the air being withheld from the exhaust pipe, retarding ...

  3. Braking action - Wikipedia

    en.wikipedia.org/wiki/Braking_action

    Braking action reports in Europe are an indication/declaration of reduced friction on a runway due to runway contamination (see Landing performance, under the Runway Surface section) which may impact an aircraft's crosswind limits. European reports have nothing to do with stopping distances on a runway, though they should alert pilots that ...

  4. List of aircraft braking systems - Wikipedia

    en.wikipedia.org/wiki/List_of_Aircraft_braking...

    In some older aircraft, the bottom section is used instead ("heel brakes"). Levers are used in a few aircraft. Most aircraft are capable of differential braking. [1] Thrust reversers, that allow thrust from the engines to be used to slow the aircraft. Air brakes, dedicated flight control surfaces that work by increasing drag.

  5. Improper installation of brake parts led American Airlines ...

    www.aol.com/improper-installation-brake-parts...

    The captain called the DFW airport tower and said, “American 1632, total brake failure, we are departing the end of runway 17L, roll crash fire rescue.” The plane then came to a stop after ...

  6. Engine braking - Wikipedia

    en.wikipedia.org/wiki/Engine_braking

    A compression release brake (also known as a Jacobs brake or "jake brake"), is the type of brake most commonly confused with real engine braking; it is used mainly in large diesel trucks and works by opening the exhaust valves at the top of the compression stroke, so the large amount of energy stored in that compressed air is not returned to ...

  7. Air brake (aeronautics) - Wikipedia

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

    In aeronautics, air brakes or speed brakes are a type of flight control surface used on an aircraft to increase the drag on the aircraft. [1] When extended into the airstream, air brakes cause an increase in the drag on the aircraft. When not in use, they conform to the local streamlined profile of the aircraft in order to help minimize drag. [2]

  8. Why do airlines overbook flights and what happens if you are ...

    www.aol.com/why-airlines-overbook-flights...

    By selling the same seats twice, an airline can make much more money: on busy flights, often the last passengers to book are desperate to travel and will pay very high fares.

  9. Compression release engine brake - Wikipedia

    en.wikipedia.org/wiki/Compression_release_engine...

    A compression release engine brake, compression brake, or decompression brake is an engine braking mechanism installed on some diesel engines. When activated, it opens exhaust valves to the cylinders, right before the compression stroke ends, releasing the compressed gas trapped in the cylinders, and slowing the vehicle.