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  2. Integral windup - Wikipedia

    en.wikipedia.org/wiki/Integral_windup

    Within modern distributed control systems and programmable logic controllers, it is much easier to prevent integral windup by either limiting the controller output, limiting the integral to produce feasible output, [5] or by using external reset feedback, which is a means of feeding back the selected output to the integral circuit of all ...

  3. Air mattress - Wikipedia

    en.wikipedia.org/wiki/Air_mattress

    An air mattress as might be used for temporary guest accommodation. An air mattress is an inflatable mattress or sleeping pad.. Due to its buoyancy, it is also often used as a water toy or flotation device, and in some countries, including the UK and South Africa, is called a lilo ("Li-lo" being a specific trademark — derived from the phrase "lie low") or a Readybed.

  4. Bestway - Wikipedia

    en.wikipedia.org/wiki/Bestway

    Bestway Group Limited is a British conglomerate founded by Sir Anwar Pervez in 1976. The group operates in the United Kingdom and Pakistan , and is currently based in London . The group originally began as Bestway Wholesale .

  5. Sleep Number - Wikipedia

    en.wikipedia.org/wiki/Sleep_Number

    The company manufactures the Sleep Number® bed, an adjustable air mattress.The "Sleep Number® setting" is a setting that adjusts the firmness or softness of the mattress on each side of the bed using air pressure (dual air chambers, one on each side), with higher numbers (up to 100) denoting higher pressure and more firmness, and lower numbers denoting less pressure and more softness.

  6. Glossary of rail transport terms - Wikipedia

    en.wikipedia.org/wiki/Underbody

    Westinghouse Air Brake. A system of continuous brakes invented and patented (the first patent in 1869) by Mr. George Westinghouse, which is operated by compressed air. The air is compressed, by a steam air pump on the locomotive or an electric motor compressor on the car. and is stored up in a tank called the main reservoir on the engine or tender.

  7. Center of gravity of an aircraft - Wikipedia

    en.wikipedia.org/wiki/Center_of_gravity_of_an...

    When the weight of the aircraft is at or below the allowable limit(s) for its configuration (parked, ground movement, take-off, landing, etc.) and its center of gravity is within the allowable range, and both will remain so for the duration of the flight, the aircraft is said to be within weight and balance. Different maximum weights may be ...

  8. Betz's law - Wikipedia

    en.wikipedia.org/wiki/Betz's_law

    Some manufacturers and inventors have made claims of exceeding the limit by using nozzles and other wind diversion devices, usually by misrepresenting the Betz limit and calculating only the rotor area and not the total input of air contributing to the wind energy extracted from the system. The Betz limit has no relevance when calculating ...

  9. Maximum landing weight - Wikipedia

    en.wikipedia.org/wiki/Maximum_landing_weight

    The maximum landing weight (MLW), also known as the maximum structural landing weight or maximum structural landing mass, [1] is the maximum aircraft gross weight due to design or operational limitations at which an aircraft is permitted to land. The MLW is set in order to ensure safe landings; if an aircraft weighs too heavy during touchdown ...