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Aviation History
1953
1953 - 1632.PDF
262 The world's largest helicopter is Piasecki's YH-16. 264 Back to simplicity—the anti-submarine Short Seamew. 265 By a famous French constructor: the Morane Fleuret trainer (1953) THE FIRST FIFTY YEARS . . . 1953 This is the last page of a history; yet it is ahead of the news, for mostly the machines are unproven. First is the Piasecki YH-16 (262), the world's largest heli copter, weighing 35,000 lb and capable of carrying 40 troops. Then comes the S.O. 9000 Trident (263), built to provide data for a supersonic intercepter and having a rocket motor in the tail and Turbomeca turbo jets at the wing tips. Above (264) is the Short Seamew anti-submarine aircraft, a sturdy, inexpensive type designed to operate from the smaller aircraft carriers. Below it, at 265, is the Morane Fleuret light jet trainer, with twin Turbomecas and side-by-side seating, followed at 266 by the Short Sherpa research aircraft, which has an "isoclinic" wing. The principle is that, instead of being as stiff as possible, the wing is relatively flexible and distorts, as the makers put it, "in an advantageous manner." The North 786 263 Tail-mounted rocket, tip-mounted turbojets: the Trident. American YF-100, at 267, is a very remarkable fighter indeed, as witness its achievement of supersonic speed on its maiden trip. A U.S. Navy fighter of altogether exceptional interest is the Convair Sea Dart (268). This is a delta-wing machine which, when at rest, is partially submerged in the water, and which rises into the air, and descends again, through the medium of "hydro- skis." Remarkable French designs are the Hurel Dubois HD-31 transport (269), with its wing of 20.2:1 aspect ratio, and the S.E. 5000 Baroudeur, at 270, a rocket-launched fighter/attack aircraft which takes off from a trolley and lands on skids. Last, at 271, is the Douglas X-3 research aircraft designed— when the power is available—for a Mach number of 3 (repre senting 1,960-2,280 m.p.h., depending on height) and altitudes of the order of 200,000-300,000ft. Speculating on how this "phenomenal" machine will appear to readers half a century hence, we leave the great company of aircraft which have had their exits and their entrances during the first fifty years. 266 The Short Sherpa research aircraft, with isoclinic wing. 267 Supersonic speed on the level: North American YF-100. 268 Delta-wing and hydro-skis: the Convair Sea Dart. 270 Trolley take-off, skid landing: the Baroudeur. .»*&#, *. 269 Seeking low induced drag: the Hurel Dubois HD-31. 271 Designed for Mach 3: the Douglas X-3.
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