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  2. Nozzle - Wikipedia

    en.wikipedia.org/wiki/Nozzle

    Air-aspirating nozzles use an opening in the cone shaped nozzle to inject air into a stream of water based foam (CAFS/AFFF/FFFP) to make the concentrate "foam up". Most commonly found on foam extinguishers and foam handlines. Swirl nozzles inject the liquid in tangentially, and it spirals into the center and then exits through the central hole ...

  3. Air bearing - Wikipedia

    en.wikipedia.org/wiki/Air_bearing

    With conventional single nozzle aerostatic bearings, the compressed air flows through a few relatively large nozzles (diameter 0.1 – 0.5 mm) into the bearing gap. The gas consumption thus allows only some flexibility such that the bearing's features (force, moments, bearing surface, bearing gap height, damping) can be adjusted only ...

  4. Expanding nozzle - Wikipedia

    en.wikipedia.org/wiki/Expanding_nozzle

    The expanding nozzle is a type of rocket nozzle that, unlike traditional designs, maintains its efficiency at a wide range of altitudes. It is a member of the class of altitude compensating nozzles, a class that also includes the plug nozzle and aerospike. While the expanding nozzle is the least technically advanced and simplest to understand ...

  5. Thrust vectoring - Wikipedia

    en.wikipedia.org/wiki/Thrust_vectoring

    The deflection of the jet away from the body-axis through the implementation of a flexible nozzle, flaps, paddles, auxiliary fluid mechanics or similar methods. Thrust-vectoring flight control (TVFC) Pitch, yaw-pitch, yaw-pitch-roll, or any other combination of aircraft control through deflection of thrust generally issuing from an air ...

  6. Bellows - Wikipedia

    en.wikipedia.org/wiki/Bellows

    Diagram of a fireplace hand-bellows. A bellows or pair of bellows is a device constructed to furnish a strong blast of air.The simplest type consists of a flexible bag comprising a pair of rigid boards with handles joined by flexible leather sides enclosing an approximately airtight cavity which can be expanded and contracted by operating the handles, and fitted with a valve allowing air to ...

  7. Solutions for cavitation in marine propellers - Wikipedia

    en.wikipedia.org/wiki/Solutions_for_Cavitation...

    These nozzles spray out compressed air over the propeller that creates "a macro bubble". [1] This bubble completely encompasses the propeller that is in operation. With the differing characteristics of the seawater outside of the bubble and the air inside, a zone develops that has the ability to reduce the resonance frequency. [1]

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