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Why do many airliners have winglets, the bent-up wing tips?

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  1. To weaken wingtip vortices and save fuel
  2. To make the plane look faster
  3. To hold extra landing lights

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References

  1. Winglets / Factors of Aerodynamic Drag, NASA Glenn Beginner's Guide to Aeronautics www1.grc.nasa.gov/beginners-guide-to-aeronautics/winglets Checked 2026-10-10.

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