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THE PROBLEMS OF AIR NAVIGATION
The earth as a planet
CHART PROJECTIONS FOR AIR NAVIGATION
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aeronautical charts Air Almanac air navigation aircraft airplane airport approximately assumed position azimuth beacon beam celestial navigation circle of position Civil Aeronautics compass heading curve dead reckoning dead reckoning position determined deviation direction and velocity distance drift angle earth east equator error feet flight flying ground speed horizon hour indicated instrument intended track interception intersection Lambert projection landmarks latitude line of position longitude magnetic variation marker beacons measured Mercator chart meridian meridian nearest method minutes nautical miles obtained parallel pilot plane plotted polar pole problem quadrant radio bearings radio compass radio direction finder radio range station radio station regional charts represents rhumb line rotation route scale sectional charts sextant shown signal star straight line subtracted surface tion true air speed true course true heading true index weather wind correction angle wind direction wind triangle