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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
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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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