A Treatise Upon Aerostation: Or, The Art of Travelling Through the Air, by Mechanical Means Alone; with a Full Explanation of the Natural Principles by which Birds are Enabled to Fly; Likewise Instructions and Plans for Making a Flying Car with Wings, in which a Man May Sit, And, by Working a Small Lever, Cause Himself to Ascend and Soar Through the Air with Great Facility ...W. H. Sommerton, and may be had of the author, 1831 - 28 pàgines |
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A Treatise Upon the Art of Flying: By Mechanical Means, with a Full ... Thomas Walker (Portrait painter) Visualització completa - 1810 |
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able to fly active wings arms art of flying Art of Travelling artificial flying artificial wings ascend back edges bird forwards body buoyancy and progression car to sit cause ciples class of birds compressed condor demonstrate DEUTSCHES MUSEUM drachm eagle effect elastic power exertion expansion flight of birds force of birds force of gravity front edges hitherto humming bird humming-bird invention legs living machine manner of flying means of flying method of flying mill-sails motion of birds observe overcome the force pair of wings paper wings parachutes passive surfaces pectoral muscles possess powers of flight principles of nature produce a projectile projectile force projectile impulse projectile motion quill feathers re-action readers sail science of flying shew silk sliding poll SOMERTON stone strike the active subject of flying tip to tip treatise underside and back upwards various Vide plate whole weight wings and tail wings formed