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Static wicks on the winglet and aileron of an EasyJet Airbus A319-100. Static wicks, also called static dischargers or static discharge wicks, are devices used to remove static electricity from aircraft in flight. They take the form of small sticks pointing backwards from the wings, and are fitted on almost all civilian aircraft. [1]
Nearly all jetliners have two PACKs, although larger aircraft such as the Boeing 747, Lockheed L-1011, and McDonnell-Douglas DC-10/MD-11 have three. The quantity of bleed air flowing to the AC pack is regulated by the flow control valve (FCV). One FCV is installed for each PACK.
Qatar Airways announced it was grounding its five Dreamliners. [53] Ethiopian Air was the final operator to announce temporary groundings, of its four Dreamliners. [54] As of January 17, 2013, all 50 of the aircraft were grounded. [54] [55] [56] On January 18, Boeing announced that it was halting 787 deliveries until the battery problem was ...
Low winged aircraft are more affected by ground effect than high wing aircraft. [10] Due to the change in up-wash, down-wash, and wingtip vortices, there may be errors in the airspeed system while in ground effect due to changes in the local pressure at the static source. [9]
They are used to support a parked aircraft to prevent their tail from drooping or even falling to the ground. When the passengers in the front get off an aircraft, the aircraft becomes tail heavy and the tail will droop. Using the jack is optional but not all aircraft need it. When needed, they are tugged to the tail and set up by manpower.
Digital maps of terrain and obstacle features are then used to determine whether a collision is likely if the aircraft does not pull up at a given pre-set g-level. If a collision is predicted, a cockpit warning may be provided. This is the type of system deployed on aircraft such as the Eurofighter Typhoon. [23]
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