Abstract
(1) LIEUT.—COLONEL H. HOERNES has, under the title given above, produced a very readable popular hand book, and its low price and handy size should find it a ready market. Its chief value is as an historical record, the section dealing with dirigibles being particularly useful and giving a mass of important information in a small space. As may be expected from one whose name is well known as an authority on lifting-screws, the author declares emphatically for the helicopter as the machine of the future, and says: “In my opinion at least, the lifting-screw machine, or helicopter, forms an advance on every other type of flying-machine.” The reasons for this statement are given as its capabilities for vertical rise, its lightness, strength, and ease in landing, its safety, trustworthiness, and ease in control.
(1) A Compendium of Aviation and Arostation: Balloons, Dirigibles, and Flying-machines.
By Lieut.—Colonel H. Hoernes. With a preface by J. H. Ledeboer. Pp. xi + 179. (London: Charles Griffin and Co., Ltd., 1911.) Price 2s. 6d. net.
(2) The Helicopter Flying-machine: an Account of Previous Experiments, including an Analysis of the Author's Turbine Machine.
By J. Robertson Porter. Pp. viii + 80. (London: Aronautics Office, 1911.) Price 3s. 6d. net.
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(1) A Compendium of Aviation and Arostation: Balloons, Dirigibles, and Flying-machines (2) The Helicopter Flying-machine: an Account of Previous Experiments, including an Analysis of the Author's Turbine Machine . Nature 88, 346–347 (1912). https://doi.org/10.1038/088346b0
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DOI: https://doi.org/10.1038/088346b0