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  2. Components of jet engines - Wikipedia

    en.wikipedia.org/wiki/Components_of_jet_engines

    Cooling air for the turbine vanes undergoes a similar process. Cooling the leading edge of the blade can be difficult, because the pressure of the cooling air just inside the cooling hole may not be much different from that of the oncoming gas stream. One solution is to incorporate a cover plate on the disc.

  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. 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.

  5. Pratt & Whitney JT12 - Wikipedia

    en.wikipedia.org/wiki/Pratt_&_Whitney_JT12

    The J60 conception and project design began in July 1957 at United Aircraft of Canada (now Pratt & Whitney Canada) in Montreal.The project design details were transferred to the main P&W company in East Hartford and in May 1958, the first prototype, with military designation YJ60-P-1 commenced testing.

  6. T-62 - Wikipedia

    en.wikipedia.org/wiki/T-62

    The commander's cupola is located on the left of the top of the turret. The loader has a single-piece hatch located on the right side of the turret and further back than the commander's cupola. The loader's hatch has a periscope vision block that can be used to view the areas in front of and behind the vehicle.

  7. 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.

  8. SSI recipients get January check in December, kicking off ...

    www.aol.com/ssi-recipients-january-check...

    Because of the calendar, Social Security recipients who get Supplemental Security Income benefits get their first 2025 check on Dec. 31, 2024.

  9. 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 .

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