Word: aero
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Every midshipman at Annapolis will soon study aviation through the 4-year curriculum. Theory of flight, aero-engines, aerial navigation and similar subjects will worry the already hard-worked students. In the future they will learn to fly-if they can pass the physical tests. These include being spun round in a revolving chair to simulate spinning in the air, walking blindfold in a straight line, breathing rarefied air corresponding to an altitude of 20,000 ft. or so. Army Air Service men see in this an outcome of the Mitchell controversy and a move to forestall a United...
...Pole while he is in that neighborhood next summer. If he does, he may have company. Last week, a radio despatch from the steamer Pram, plowing through cold seas for Kings Bay, Spitzbergen, reminded the world that Captain Roald Amundsen, after cruel vicissitudes (TIME, Nov. 24), had got an aero-arctic expedition underway...
Amundsen goes north under the auspices of the Norwegian Aero Club. The expedition was financed by $100,000 from James W. Ellsworth of Manhattan and has with it two Durnier-Wahl seaplanes, one to be flown by Aviator Lincoln Ellsworth, son of James W., the other by Amundsen. When he stated his plans, Amundsen announced that he would spend some 24 hours examining the Pole and its vicinity. He thought it might be possible to establish a fuel and food base at the Pole for further aerial exploration. From Kings Bay to the Pole is only a seven-hour flight...
...horsepower locomotive may weigh 20 or 30 tons. A small Ford motor weighs over 200 pounds and develops only 25 horsepower or so. The Liberty motor weighs 873 pounds for its 400 horsepower, i. e. a little over two pounds per horsepower. The great object of the aero-engine design is to achieve the truly wonderful goal of one pound per horsepower. This is almost attained by the two new Packard motors, descriptions of which have just been made public by Mr. Macauley. The smaller of the two develops 500 horsepower at 2,000 revolutions per minute and weighs...
This is the result of two years' steady development work. While every new device is constantly being tried and suggested, progress in aero engines seems to consist in improvement of existing features, with gradual changes only. The strongest steel alloys are used throughout. Many parts are made totally of duralumin. The valve mechanism of the overhead type is driven by a cam system and placed in a housing of the lightest possible construction. The cylinders are of larger bore and shorter stroke than the old Liberty motors so that the height of the motor is diminished. The exhaust valves...