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  2. Boeing 737 rudder issues - Wikipedia

    en.wikipedia.org/wiki/Boeing_737_rudder_issues

    During the 1990s, a series of issues affecting the rudder of Boeing 737 passenger aircraft resulted in multiple incidents. In two separate accidents, pilots lost control of their aircraft due to a sudden and unexpected rudder movement, and the resulting crashes killed everyone on board, 157 people in total. [ 1]

  3. Building automation - Wikipedia

    en.wikipedia.org/wiki/Building_automation

    Building automation ( BAS ), also known as building management system ( BMS) or building energy management system ( BEMS ), is the automatic centralized control of a building's HVAC (heating, ventilation and air conditioning), electrical, lighting, shading, access control, security systems, and other interrelated systems.

  4. Linear actuator - Wikipedia

    en.wikipedia.org/wiki/Linear_actuator

    DVD drive with leadscrew and stepper motor. Floppy disc drive with leadscrew and stepper motor. A linear actuator is an actuator that creates linear motion (i.e., in a straight line), in contrast to the circular motion of a conventional electric motor. Linear actuators are used in machine tools and industrial machinery, in computer peripherals ...

  5. Johnson Controls - Wikipedia

    en.wikipedia.org/wiki/Johnson_Controls

    Johnson Controls. [ 2] Johnson Controls International plc is an American, Irish-domiciled multinational conglomerate headquartered in Cork, Ireland, [ 3] that produces fire, HVAC, and security equipment for buildings. As of mid-2019, it employed 105,000 people in around 2,000 locations across six continents. [ 4]

  6. ‘Something was terribly wrong’: North Carolina homeowners ...

    www.aol.com/finance/something-terribly-wrong...

    Lawsuits and complaints In September of last year, the Flores’ and three other families faced an unexpected lawsuit from Robinson Builders Mart, a builder supply company in Newton, N.C.

  7. Pneumatic actuator - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_actuator

    Pneumatic rack and pinion actuators for valve controls of water pipes. A pneumatic actuator mainly consists of a piston or a diaphragm which develops the motive power. It keeps the air in the upper portion of the cylinder, allowing air pressure to force the diaphragm or piston to move the valve stem or rotate the valve control element.

  8. Yaw damper - Wikipedia

    en.wikipedia.org/wiki/Yaw_damper

    Yaw damper. A yaw damper (sometimes referred to as a stability augmentation system[ 1]) is a system used to reduce (or damp) the undesirable tendencies of an aircraft to oscillate in a repetitive rolling and yawing motion, a phenomenon known as the Dutch roll. A large number of modern aircraft, both jet-powered and propeller -driven, have been ...

  9. US troops attacked in Syria, no initial reports of injuries ...

    www.aol.com/news/us-troops-attacked-syria-no...

    WASHINGTON (Reuters) -U.S. troops in northeastern Syria were attacked by a drone, a U.S. official told Reuters on Friday, although there were no injuries according to initial reports. This is the ...

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