Like all large jetliners, the Boeing 787 Dreamliner has a brake unit on each of the eight wheels of the main landing gear assemblies. On other aircraft, though, the brakes are powered by the hydraulics system where hydraulic actuators push the brakes against the wheel. To save weight which improves the fuel burn and payload, on the Dreamliner the brakes are powered by electrical actuators to press the carbon brake discs against the wheel. By dispensing with hydraulic actuators and the associated hydraulic lines and accumulators associated with the braking system, the Boeing 787-8 saves 141 lbs and the larger 787-9 saves 244 lbs. With electrical wiring replacing hydraulic lines, it's also faster to replace the brake units if needed. Built-in monitoring systems allow engineers to monitor brake performance closely giving a real time measurement of disc wear. The electric brakes on the 787 are produced by Safran Landing Systems and are the first application of this technology on a production commercial aircraft. Safran is a French company formerly known as Messier-Bugatti-Dowty and is the largest manufacturer of aircraft landing gear sets in the world. Final assembly of the 787 landing gears takes place at Safran's facilities in Everett, Washington, and Toronto, Ontario, before delivery to the 787 production lines in Seattle and Charleston. This particular 787 is N828AA, a -9 variant built at the Boeing Charleston line and delivered to American in June 2017. #avgeek #aviation #aircraft #planeporn #KDFW #DFW #DallasFortWorth #Texas #airport #planespotting #instaplane #Boeing #787 #AmericanAirlines #N828AA #Dreamliner #instagramaviation #splendid_transport #instaaviation #aviationlovers #aviationphotography #flight #AvGeeksAero #AvgeekSchoolofKnowledge #AvGeekNation (at DFW Airport) https://www.instagram.com/p/CWPkH5NL8eS/?utm_medium=tumblr
