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  2. Plenum space - Wikipedia

    en.wikipedia.org/wiki/Plenum_space

    A plenum space is a part of a building that can facilitate air circulation for heating and air conditioning systems, by providing pathways for either heated/conditioned or return airflows, usually at greater than atmospheric pressure.

  3. Building airtightness - Wikipedia

    en.wikipedia.org/wiki/Building_airtightness

    The airtightness of a building is often expressed in terms of the leakage airflow rate through the building's envelope at a given reference pressure (usually 50 pascal) [10] divided by the: Heated building volume V. At 50·Pa, it is called the air change rate at 50 Pa and usually noted n 50 (units: h −1). [13] [14] Envelope area A E.

  4. Stabilizer (aeronautics) - Wikipedia

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

    A Boeing 737 uses an adjustable stabilizer, moved by a jackscrew, to provide the required pitch trim forces. Generic stabilizer illustrated. A horizontal stabilizer is used to maintain the aircraft in longitudinal balance, or trim: [3] it exerts a vertical force at a distance so the summation of pitch moments about the center of gravity is zero. [4]

  5. Bulkhead (partition) - Wikipedia

    en.wikipedia.org/wiki/Bulkhead_(partition)

    By the Athenian trireme era (500 BC), [1] the hull was strengthened by enclosing the bow behind the ram, forming a bulkhead compartment. Instead of using bulkheads to protect ships against rams, Greeks preferred to reinforce the hull with extra timber along the waterline, making larger ships almost resistant to ramming by smaller ones.

  6. Flow separation - Wikipedia

    en.wikipedia.org/wiki/Flow_separation

    The fluid exerts a constant pressure on the surface once it has separated instead of a continually increasing pressure if still attached. [4] In aerodynamics, flow separation results in reduced lift and increased pressure drag, caused by the pressure differential between the front and rear surfaces of the object. It causes buffeting of aircraft ...

  7. Jets eliminated from playoff contention, extending NFL-worst ...

    www.aol.com/jets-eliminated-playoff-contention...

    The New York Jets' trying season has hit a new low – yet one long familiar to the franchise.. With Sunday's 32-26 overtime loss to the Miami Dolphins, the Jets (3-10) were officially eliminated ...

  8. Rim joist - Wikipedia

    en.wikipedia.org/wiki/Rim_joist

    In dimensioned lumber construction, the rim joists are the same depth, thickness and material as the joists themselves; in engineered wood construction, the rim joists may be oriented strand board (OSB), plywood or an engineered wood material varying in thickness from 1 inch (25 mm) to as much as 1 + 3 ⁄ 4 inches (44 mm), though they are ...

  9. Lions WR Jameson Williams, already under PED suspension ... - AOL

    www.aol.com/sports/lions-wr-jameson-williams...

    Jameson Williams was facing an arrest. Then a police sergeant, and Lions fan, arrived. The near arrest reportedly occurred on Oct. 8, weeks before the PED suspension, when Williams and his brother ...

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