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New Conquest of the Air or the Advent of Aerial Navigation

New Conquest of the Air or the Advent of Aerial Navigation


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About the Book

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918. Excerpt: ... CHAPTER III THE DIRIGIBLE BALLOON No sooner was the balloon invented than attempts were made to render it independent of the wind and to go in any desired direction. We have seen that Benjamin Franklin, in describing the first balloon voyage by man in 1783, shrewdly suggested "that perhaps mechanic art may find easy means to give them balloons progressive motion in a calm and to slant them a little in the wind." A definite conception of the dirigible balloon, which was not realized in practice for a century, was embodied in a letter written to Benjamin Franklin on May 24, 1784, in which the writer, Francis Hopkinson of Philadelphia, proposes to make the balloon spindle-shaped and to drive it by a wheel at the stern. This wheel, it is explained, should consist of vanes or fans of canvas whose planes should be considerably inclined with respect to the plane of its motion, exactly like the wheel of a smoke-jack. Blanchard, of whom we have had occasion to speak 68 several times, probably was the first in 1784 to apply a species of oars to the basket of a hydrogen balloon but without being able to effect any change in its direction. It was no doubt Blanchard also who induced our countryman, Dr. Jeffries, to try a similar appliance in their balloon-ascension in England later in the same year, one of the objects of this ascension being, according to Jeffries' account, already quoted, " to see the effect which oars or wings might be made to produce towards this purpose ascending or descending at pleasure and in directing the course of the balloon." If the idea of rendering the balloon obedient to its helm by mechanical means dates from the invention of the balloon, that of utilizing favorable currents of air, which was described in Chapter I, is quite as old. Whi...


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Product Details
  • ISBN-13: 9781151659989
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 38
  • Spine Width: 2 mm
  • Width: 189 mm
  • ISBN-10: 1151659983
  • Publisher Date: 06 Feb 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 86 gr


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