The Popular Science Monthly Volume 94

The Popular Science Monthly Volume 94

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...McDoul, Box 480. Johnstown. Pennsylvania. ropher is little excuse for an aircraft to lose its way, rain or shine.-Aerial mail delivery has been handicapped in this country because pilots lost their way in fogs and storms. Future delivery of mail by aeroplane, especially long-distance flights, will probably employ radio if the service meets the demands of progress in flying. Aid to Future Explorers The success of radio direction-finding is a boon to aerial navigation at night, when it is important that an aircraft crew should know hourly their exact location and whether or not their course is true. Shifting winds then become known and corrections can be made for the ship's drift. ' A map becomes worthless for visual navigation when mist, fog, or rain hides known landmarks; and the terse reports of night bombing operations during the war, announcing the number of ships that failed to return to the aerodromes after certain longdistance raids; testified to the need of a more accurate means of navigation. The progress made in wireless development has dispelled the remoteness of the North Pole and brought closer America and Europe, and students of aerial navigation are now convinced that the fear of becoming lost has been eliminated from the minds of those who propose to explore and venture by means of aircraft. Making a One-Man Job of Adjusting Foot-Brakes O adjust automobile loot-brakes single-handed, jack up the rear wheels, one side at a time, while setting the band on each wheel; then, with a block against the seat panel and a jack placed in as shown to force the pedal down, turn the wheel and the screws on the brake-band, adjusting it to the proper tension. Make both brake tensions equal. Take up easily Hold the gains of army...show more

Product details

  • Paperback | 338 pages
  • 189 x 246 x 18mm | 603g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236876075
  • 9781236876072