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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 ...
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.
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]
Damper (flow) Opposed blade dampers in a mixing duct. A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature ...
A growing list of problems for Boeing. The claims aren’t new: A previous whistleblower, Sam Salehpour, a Boeing engineer, said he found and reported similar gaps in 787 and 777 aircraft.
Electronic throttle control ( ETC) is an automobile technology that uses electronics to replace the traditional mechanical linkages between the driver's input such as a foot pedal to the vehicle's throttle mechanism which regulates speed or acceleration. This concept is often called drive by wire, [1] [2] and sometimes called accelerate-by-wire ...
In 1964 the corporate name was changed to Honeywell Inc. In 1999 AlliedSignal acquired Honeywell and renamed the merged company Honeywell International Inc. Legacy. Minnesota Inventors Hall of Fame, 1992 inductee. Patents. 1886 Thermo-electric damper-regulator and alarm (341,092 and 347,866) 1888 Automatic temperature control (390,281)
Air-side economizers also use outside air to condition spaces, but do so using fans, ducts, dampers, and control systems to introduce and distribute cool outdoor air when appropriate. An important component of natural ventilation is air change rate or air changes per hour: the hourly rate of ventilation divided by the volume of the space. For ...
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