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  2. Why is The North Face running a racial inclusion course? - AOL

    www.aol.com/finance/gen-z-approved-clothing...

    The nearly 60-year-old American retailer pointed to a 2017 study which found that just 26.2% of Black people and 25.7% of Asian people spend time in the countryside, compared with 44.2% of white ...

  3. General Electric YF120 - Wikipedia

    en.wikipedia.org/wiki/General_Electric_YF120

    History Development General Electric (GE) began developing the GE37, which would become basis of the XF120 and YF120, for the Joint Advanced Fighter Engine (JAFE) program in the early 1980s aimed at supplying the powerplant for the Air Force's Advanced Tactical Fighter (ATF). The core technology used in the F120 design was developed during two industry-government programs, the Advanced ...

  4. Hybrid electric aircraft - Wikipedia

    en.wikipedia.org/wiki/Hybrid_electric_aircraft

    The 2 MW (2,700 hp) design is similar to the Airbus E-Fan X program, but aims for certification and production for a subsequent commercial offer. One 2,150 hp (1,600 kW) PW121 turboprop will be replaced by a 1 MW (1,300 hp) gas turbine joined with an electric motor of the same rating, powered by off-the-shelf lithium-ion batteries for takeoff ...

  5. Droop speed control - Wikipedia

    en.wikipedia.org/wiki/Droop_speed_control

    Droop speed control is a control mode used for AC electrical power generators, whereby the power output of a generator reduces as the line frequency increases. It is commonly used as the speed control mode of the governor of a prime mover driving a synchronous generator connected to an electrical grid. It works by controlling the rate of power ...

  6. Pratt & Whitney F119 - Wikipedia

    en.wikipedia.org/wiki/Pratt_&_Whitney_F119

    History The F119 resulted from the Joint Advanced Fighter Engine (JAFE) program in the early 1980s aimed at supplying the powerplant for the Air Force's Advanced Tactical Fighter (ATF). Detailed design of Pratt & Whitney's submission, designated internally as PW5000, began when the request for proposals (RFP) for JAFE, later renamed ATF Engine, was released in May 1983. Advances in engine ...

  7. Power plant efficiency - Wikipedia

    en.wikipedia.org/wiki/Power_plant_efficiency

    To express the efficiency of a generator or power plant as a percentage, invert the value if dimensionless notation or same unit are used. For example: A heat rate value of 5 gives an efficiency factor of 20%. A heat rate value of 2 kWh/kWh gives an efficiency factor of 50%. A heat rate value of 4 MJ/MJ gives an efficiency factor of 25%.

  8. Side project time - Wikipedia

    en.wikipedia.org/wiki/Side_project_time

    The 20% Project is responsible for the development of many Google services. Founders Sergey Brin and Larry Page advised that workers "spend 20% of their time working on what they think will most benefit Google". Google's email service 'Gmail' was created by the developer Paul Buchheit on his 20% time. In his project "Caribou", Buchheit used his ...

  9. British Airways Flight 009 - Wikipedia

    en.wikipedia.org/wiki/British_Airways_Flight_009

    Around 13:42 UTC (20:42 Jakarta time), the number-four Rolls-Royce RB211 engine began surging and soon flamed out. The flight crew immediately performed the engine shutdown drill, quickly cutting off fuel supply and arming the fire extinguishers. Less than a minute later, at 13:43 UTC (20:43 Jakarta time), engine two surged and flamed out.

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