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2. Airbus E-Fan - Wikipedia

   en.wikipedia.org/wiki/Airbus_E-Fan

   The batteries are mounted in the inboard section of the wings. They have enough power for one hour and take one hour to recharge. An onboard backup battery is available to make an emergency landing if power runs out while airborne. The E-fan's landing gear consists of a retractable fore and aft wheel, and a fixed wheel under the wings ...

3. 2013 Boeing 787 Dreamliner grounding - Wikipedia

   en.wikipedia.org/wiki/2013_Boeing_787_Dreamliner...

   On July 12, 2013, an Ethiopian Airlines 787 battery caught fire while on the ground at London Heathrow Airport having landed 10 hours prior. This fire was different in that it was caused by lithium-manganese batteries used by the emergency locator transmitter located in the upper rear portion of the aircraft's fuselage.

4. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

5. High-volume low-speed fan - Wikipedia

   en.wikipedia.org/wiki/High-volume_low-speed_fan

   A commercial fan delivering air at 20 miles per hour (mph) requires about 64 times as much power as a similar sized fan delivering air at five mph. [8] Airspeed, combined with fan "effectiveness," means that when the objective is to cool people or animals, very large, low-speed commercial fans are more efficient and effective than small high ...

6. Big Ass Fans - Wikipedia

   en.wikipedia.org/wiki/Big_Ass_Fans

   Big Ass Fans is an American company that manufactures fans, evaporative coolers, and controls for industrial, agricultural, commercial and residential use. The company's headquarters is in Lexington, Kentucky , with additional offices in Australia, Malaysia, Singapore and Canada.

7. Industrial fan - Wikipedia

   en.wikipedia.org/wiki/Industrial_fan

   The axial fan is often contained within a short section of cylindrical ductwork, to which inlet and outlet ducting can be connected. Axial fan types have fan wheels with diameters that usually range from less than a foot (0.3 meters) to over 30 feet (9.1 m), although axial cooling tower fan wheels may exceed 82 feet (25 m) in diameter.