11. He presented some papers to the society including " Power in Relation to Weight in Aerial Navigation ". 12. LOCKHEED-TIME _ ATLANTA _ A fourth dimension-- time-- is being added to Lockheed Martin Corp .'s aerial navigation systems. 13. Upon arrival, he heard of the International Conference on Aerial Navigation to take place the first week of August. 14. In 1923 he joined the Society of Aviation and Aerial Navigation of Ukraine and the Crimea ( OAVUK ). 15. At this point the name of the school was changed to the Marine Aerial Navigation School ( MANS ). 16. It solved the so-called celestial triangle accurately to about one minute of arc and quickly enough for aerial navigation . 17. Yancey was the author of several books on aviation including " Aerial Navigation and Meteorology " ( 1929 ). 18. After the war he worked as an independent businessman and in 1925 worked as a specialist in aerial navigation with Lufthansa. 19. In 1809 he began the publication of a landmark three-part treatise titled " On Aerial Navigation " ( 1809 1810 ). 20. Gatty was offered American citizenship and the newly created position of Senior Aerial Navigation Engineer for the US Army Air Corps.
