Drag

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Parasite drag - skin friction (drag of all parts of the aeroplane that do not contribute to lift)
Induced Drag - caused by angle of attack
-increases as angle of attack increases and decreases as angle of attack decreases
-high aspect ratio and narrow chord has the least induced drag, small aspect ratio and wide chord has most induced drag

  • Skin Friction - friction on the skin from the air
  • Form Drag - resistance of body parts moving through the air
  • Interference Drag - assembled aircraft creates more drag than the parts would if they were individuals
  • Leakage Drag - air leaks out doors and windows

-Slow, clean and heavy is the condition with the most induced drag.
-Wingtip vortices's produce induced drag.