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Type of control valve for sprinkler systems that is mounted to an outside wall and indicates "open" or "shut" in an indicator window on the valve body. Water curtain nozzle A nozzle designed to throw a fan of water droplets to form a "curtain" in an attempt to reduce the risk of radiated heat igniting a nearby exposure. Also known as Water Wall.
In aeronautics, a ducted fan is a thrust-generating mechanical fan or propeller mounted within a cylindrical duct or shroud. Other terms include ducted propeller or shrouded propeller . [ 1 ] When used in vertical takeoff and landing ( VTOL ) applications it is also known as a shrouded rotor .
A holdfast or hold fast is a form of temporary clamp used to hold a workpiece firmly to the top or side of a wooden workbench or the top of an anvil. [1] A form of bench dog, a traditional holdfast has either a curved or flat top. Its shank is slid loosely into a “dog” hole in the bench or anvil until the tip of its hook touches the work.
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Isofix anchor points under a removable cover. Isofix (styled ISOFIX) is the international standard for attachment points for child safety seats in passenger cars. The system has other regional names including LATCH ("Lower Anchors and Tethers for Children") in the United States, and LUAS ("Lower Universal Anchorage System") or Canfix in Canada. [1]
flight duty period: FDPS flight plan data processing system Flight planning: FDR flight data recorder: Avionics. Also known as 'black box'. FDRS flight data recorder system Avionics FDTL flight duty time limitations FDU flux detector unit FEP final end point FF fuel flow FFDZ free fall drop zone (parachutists) FFS full flight simulator: Flight ...
Temporary heat sinks are sometimes used while soldering circuit boards, preventing excessive heat from damaging sensitive nearby electronics. In the simplest case, this means partially gripping a component using a heavy metal crocodile clip, hemostat, or similar clamp. Modern semiconductor devices, which are designed to be assembled by reflow ...
With this design (which consists of a basic stator and rotor), the fan's blades mount to a central hub, known as a flywheel. The flywheel which is made of either metal or reinforced rubber can be mounted either flush with the fan's motor housing (concealed) or prominently below the fan's motor housing (known as a "dropped flywheel").