English: Selected airfoils in nature and various vehicles, with their approximate chord length indicated.

Sources for the shapes of the airfoils:

• Low-speed ULM wing: drawn over own photo of low-cost, low-speed ultralight

• Propeller blade: drawn over own photo of a sliced WW2-era bomber propeller

• Airliner: Profile of an A-321 wing at root, as represented in Bertin 2009^[1]

• Supersonic interceptor: Profile of an F-104 wing at root, drawn over own photo of a wing section exhibited in the Deutsches Museum

• Blackbird : as shown in Alexander 2002^[2] (very approximate drawing on original, chord completely estimated)

• Dragonfly: loosely interpreted from data, photo and diagram in Hertel 1966^[3]. Section roughly mid-wing.

• Dolphin flipper fin: drawn based on CT scan shown in Fish & al. 2008^[4], chord estimated.

• Sailboat mainsail: Drawing based on own knowledge & observation.

• Turbine blade: Drawing based on multiple representations in aeronautical propulsion textbooks.

• Turbofan fan blade: Drawing based on own knowledge & observation, inspired from Rolls-Royce 2005^[5].

1. ↑ Bertin, J. J.; Cummings, R.M. (2009) Aerodynamics for Engineers (5. ed.), Prentice Hall ISBN: 013227268.
2. ↑ Alexander, D.E. (2002) Nature’s Flyers, Johns Hopkins ISBN: 0801880599.
3. ↑ Hertel, Heinrich (1966) Structure, Form, Movement
4. ↑ Fish, Frank E.; Howle, Laurens E.; Murray, Mark M. (May 2008). "Hydrodynamic flow control in marine mammals". Integrative and Comparative Biology.
5. ↑ Rolls-Royce plc (2005) The Jet Engine (6. ed.) ISBN: 0902121235.