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File:Pénaud's flying models.jpg

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Summary

Description
English: Three of Alphonse Pénaud's flying models. Top to bottom: the Hèlicoptère, the Planophore and the flapping wing Mechanical Bird. Early 1870s.
Date
Source Encyclopaedia Britannica (?)
Author Unknown authorUnknown author
Other versions
Image extraction processThis file has an extracted image: Pénaud's flying models (cropped).jpg.
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File history

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Date/TimeThumbnailDimensionsUserComment
current11:07, 19 October 2013Thumbnail for version as of 11:07, 19 October 2013500 × 764 (138 KB)HohumKept paper feel, but with less blowout and appearance of curls / bumps.
12:02, 13 October 2013Thumbnail for version as of 12:02, 13 October 2013500 × 764 (58 KB)HohumGreyscale, cleanup
02:50, 10 October 2013Thumbnail for version as of 02:50, 10 October 2013500 × 764 (96 KB)ScottHWHigher resolution; filename indicates possible even higher resolution version available source: http://www.ctie.monash.edu.au/hargrave/penaud.html
12:20, 23 October 2011Thumbnail for version as of 12:20, 23 October 2011350 × 535 (41 KB)MLWatts
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