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Which kind of drag is always there whenever a wing is making lift?

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  1. Skin friction drag
  2. Induced drag
  3. Form drag

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References

  1. FAA Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C) www.faa.gov/regulations_policies/handbooks_manuals/aviation/faa-h-8083-25c.pdf Checked 2026-10-10.
  2. Induced Drag Coefficient, NASA Glenn Beginner's Guide to Aeronautics www1.grc.nasa.gov/beginners-guide-to-aeronautics/induced-drag-coefficient Checked 2026-10-10.

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