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But, in applying such a propelling force to the air, most of the force is utilised in maintaining aerodynamic support as a matter of fact, more force is needed to maintain this support than the muscle of man could possibly furnish to a lifting screw, and even if the helicopter were applied to a full-sized, engine-driven air vehicle, the rate of ascent would depend on the amount of surplus power that could be carried.
One of the first things that Mortlake and Fanning Harding proceeded to do on their arrival at this "bivouac" was to make a tour of the row of sheds in search of the Prescott machine. But to their joy, apparently, no shed housed it. There were machines of dozens of other types, monoplanes, bi-planes, machines of the helicopter type, and a few devices based on the parachute principle.
Say, below the level of a neighboring peak where a man may lie in wait to fire." Silent Apaches faced silent Mongols, and Travis had a chance to taste what might be defeat. But the helicopter must be taken before they advanced toward the ship and the settlement. "And, maker of traps, how do you intend to bait this one?" Menlik's question was an open challenge.
Guiding himself by peering through the rifle-sight, Loudons brought the helicopter slanting down to land on the sheet of fused glass that had once been a grassy campus. "Well, this is probably it," Altamont said. "We didn't have to bother fussing around with that flag after all.
Really unstable slopes had been shaken down long ago. "I wish we had a helicopter," Cochrane repeated. "The look of the mountains as we came down, with glaciers between the smoking cones that was good show-stuff! We could have held interest here until we worked that naming contest. We could use the extra capital that would bring in!
The next morning Arcot had a long conference with President Morey. At the end of it, he left the office, ascended to the roof, and climbed into his small helicopter. He rose to the local traffic level, and waiting his chance, broke into the stream of planes bound for the great airfields over in the Jersey district.
Another figure of the early days was A. V. Roe, who came from marine engineering to the motor industry and aviation in 1905. In 1906 he went out to Colorado, getting out drawings for the Davidson helicopter, and in 1907 having returned to England, he obtained highest award out of 200 entries in a model aeroplane flying competition.
The inventor stated that 'all being arranged, the steam was up in a few seconds, when the whole apparatus spun around like any top, and mounted into the air faster than a bird; to what height it ascended I had no means of ascertaining; the distance travelled was across two fields, where, after a long search, I found the machine minus the wings, which had been torn off in contact with the ground. This could hardly be described as successful flight, but it was an advance in the construction of machines on the helicopter principle, and it was the first steam-driven model of the type which actually flew.
The Helicopter, on the other hand, has no antecedent type, but is dependent for its raising powers on the pull of a propeller, or a plurality of them, constructed, as will be pointed out hereinafter.
Soames had studied road-maps and he and Fran had discussed in detail the route to Navajo Dam using stilts to cross electrified fences from the hidden missile base. Soames was sure that with Fran's help he could find the pseudo-village where Gail and the children remained. It would call for a helicopter.
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