![]() ![]() B777 was designed when the advantages of the wingtips were well known, yet they decided to go without one anyway. Also, it is crucial to consider the tradeoff. The raked wingtips help reduce takeoff field length, increase climb performance and reduce fuel burn.So basically, these act in the same manner as the conventional wingtips. These act in the same manner as the winglets to reduce drag.Boeing 777 raked wingtip image fromAccording to Boeing,Each wing on the Boeing 777-300ER (extended range) is being extended by 6.5 feet, and raked wingtips are being added to improve the overall aerodynamic efficiency. Most of the new aircraft are designed with plenty of aerodynamic experience and the engineers can take a call based on the data available as to whether to have 'conventional' winglet or not (See A350XWB Vs B787).Coming to B777, it should be noted that the -300ER, -200LR, and -200F have wingtip devices after all- raked wingtips. ![]()
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