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  2. Components of jet engines - Wikipedia

    en.wikipedia.org/wiki/Components_of_jet_engines

    Turboprop, turboshaft and turbofan engines have additional turbine stages to drive a propeller, bypass fan or helicopter rotor. In a free turbine the turbine driving the compressor rotates independently of that which powers the propeller or helicopter rotor. Cooling air, bled from the compressor, may be used to cool the turbine blades, vanes ...

  3. Attic fan - Wikipedia

    en.wikipedia.org/wiki/Attic_fan

    An attic fan installed underneath a roof A powered attic ventilator , or attic fan , is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used.

  4. Aviation obstruction lighting - Wikipedia

    en.wikipedia.org/wiki/Aviation_obstruction_lighting

    In certain areas, some aviation regulators mandate the installation, operation, color, and/or status notification of obstruction lighting. For maximum visibility and collision-avoidance, these lighting systems commonly employ one or more high-intensity strobe or LED devices which can be seen by pilots from many miles away from the obstruction.

  5. Passive ventilation - Wikipedia

    en.wikipedia.org/wiki/Passive_ventilation

    A roof turbine ventilator, colloquially known as a 'Whirly Bird' is an application of wind driven ventilation. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems.

  6. Ridge vent - Wikipedia

    en.wikipedia.org/wiki/Ridge_vent

    A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .

  7. Cupola - Wikipedia

    en.wikipedia.org/wiki/Cupola

    Cupolas on the towers of Montefiascone Cathedral, Italy. In architecture, a cupola (/ ˈ k (j) uː p ə l ə /) [1] is a relatively small, usually dome-like structure on top of a building [2] often crowning a larger roof or dome. [3] [4] Cupolas often serve as a roof lantern to admit light and air or as a lookout.

  8. Splitter plate (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Splitter_plate_(aeronautics)

    A splitter plate is a component in some jet aircraft, used to control the airflow into the engine. Where the engine air intake is mounted partway back along the fuselage or under the wing, the splitter plate diverts the boundary layer away from the engine intake. It is a form of boundary layer control.

  9. Common Berthing Mechanism - Wikipedia

    en.wikipedia.org/wiki/Common_Berthing_Mechanism

    A bracket (4) for installation of the M/D "center section" cover is visible on either side of the CPA. The photograph was taken from the PCBM side of the mated vestibule, looking back into the ACBM. The basic individual controller design is also used for the Carbon Dioxide Removal Assembly's Pump Fan Motor Controller, Vent and Relief Valve, and ...

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