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MOPP (an acronym for " Mission Oriented Protective Posture "; pronounced "mop") is protective gear used by U.S. military personnel in a toxic environment, e.g., during a chemical, biological, radiological, or nuclear ( CBRN) strike: Protective mask – Commonly referred to as a gas mask or pro mask. It is designed to filter harmful chemical and ...
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 ...
The Extended Cold Weather Clothing System ( ECWCS / ˈɛkwæks /) is a protective clothing system developed in the 1980s by the United States Army Natick Soldier Research, Development and Engineering Center, Natick, Massachusetts. The first generation ECWCS consisted of parka and trousers plus 20 other individual clothing, handwear, headwear ...
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 ...
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.
Three Massachusetts lawmakers are pressing Defense Secretary Lloyd Austin to ground the V-22 Osprey aircraft again until the military can fix the root causes of multiple recent accidents ...
During Sunday’s thrilling men’s doubles badminton final, in which Taiwan’s Lee Yang and Wang Chi-lin bested China’s Liang Weikeng and Wang Chang to retain their title from Tokyo, a sign ...
Blast damper. A blast damper is used to protect occupants and equipment of a structure against overpressures resultant of an explosion. The blast dampers normally protect air inlets and exhaust penetrations in an otherwise hardened structure. Blast dampers are related or identical to blast valves, the latter name is generally used to describe ...