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  2. Wingtip device - Wikipedia

    en.wikipedia.org/wiki/Wingtip_device

    The winglets increased the 747-400's range by 3.5% over the 747-300, which is otherwise aerodynamically identical but has no winglets. The 747-400D variant lacks the wingtip extensions and winglets included on other 747-400s since winglets would provide minimal benefits on short-haul routes while adding extra weight and cost, although the -400D ...

  3. Wingtip vortices - Wikipedia

    en.wikipedia.org/wiki/Wingtip_vortices

    Such wings however have disadvantages with respect to structural constraints and maneuverability, as evidenced by combat and aerobatic planes which usually feature short, stubby wings despite the efficiency losses. Another method of reducing induced drag is the use of winglets, as seen on most modern airliners.

  4. Washout (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Washout_(aeronautics)

    Winglets have the opposite effect to washout. Winglets allow a greater proportion of lift to be generated near the wing tips. (This can be described as aerodynamic wash-in.) Winglets also promote a greater bending moment at the wing root, possibly necessitating a heavier wing structure

  5. Boeing 757 - Wikipedia

    en.wikipedia.org/wiki/Boeing_757

    Private and government operators have customized the 757 as VIP carriers such as the US C-32. In July 2017, there were 665 Boeing 757 in commercial service, with Delta Air Lines being the largest operator with 127 airplanes in its fleet. [2] The airliner has recorded ten hull-loss accidents out of a total of 13 hull losses, as of November 2023.

  6. Here's why plane seats don't match up with windows - AOL

    www.aol.com/article/news/2016/10/20/heres-why...

    If you’ve flown before, you may have noticed plane windows don't line up with the seats -- the 'Today I Found Out' YouTube channel has dug up the answer.

  7. Lift-induced drag - Wikipedia

    en.wikipedia.org/wiki/Lift-induced_drag

    Some early aircraft had fins mounted on the tips. More recent aircraft have wingtip-mounted winglets to reduce the induced drag. [14] Winglets also provide some benefit by increasing the vertical height of the wing system. [6]: 4.10 Wingtip mounted fuel tanks and wing washout may also provide some benefit. [citation needed]

  8. Why Airplanes Will Love 3-D Printing - AOL

    www.aol.com/2013/06/10/why-airplanes-will-love-3...

    During a recent interview, Jeff Immelt, the CEO of General Electric , acknowledged that 3-D printing has some practical applications in the world of building jet engines. He wasn't talking about ...

  9. Why do airplanes serve food? - AOL

    www.aol.com/why-airplanes-serve-food-221400201.html

    Domestic American Airlines soon followed. Aviation historians say — not so much. "I don't think people expect much from airplanes anymore," said Janet Bednarek, professor of history at the ...