Wings Airbus A380

planform view showing moderate wing aspect ratio



composite photo of structural loading test on left wing box

the a380 s wing sized maximum takeoff weight (mtow) on 650 tonnes accommodate these future versions, albeit internal strengthening required on a380f freighter. optimal wingspan weight 90 m (300 ft), airport restrictions limited less 80 m (260 ft), lowering aspect ratio 7.8 reduces fuel efficiency 10% , increases operating costs few percent, given fuel costs constitute 50% of cost of long-haul airplane operation. common wing design approach sacrifices fuel efficiency on a380-800 passenger model because of weight airbus estimates aircraft s size , advanced technology provide lower operating costs per passenger 747-400. wings incorporate wingtip fences extend above , below wing surface, similar on a310 , a320. these increase fuel efficiency , range reducing induced drag. wingtip fences reduce wake turbulence, endangers following aircraft , could, theoretically, damage house roofs.