. The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics . When well marked anticyclonic weather maylast from tAvo to ten days, beginners sliould take advantage of theshort lulls which are present as a rule in the intervals followingdawn and sunset. Cyclonic conditions, on the other hand, shfmld naturally be avoidedfor safe flight. When the wind is veering from east to north-east,bumps are much more prevalent. South winds lu-ing rain andmists. It must not be overlooked that settled periods of
. The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics . When well marked anticyclonic weather maylast from tAvo to ten days, beginners sliould take advantage of theshort lulls which are present as a rule in the intervals followingdawn and sunset. Cyclonic conditions, on the other hand, shfmld naturally be avoidedfor safe flight. When the wind is veering from east to north-east,bumps are much more prevalent. South winds lu-ing rain andmists. It must not be overlooked that settled periods of calmweather usually cause a fog or haze to collect low <lown, whichwould prevent an aviator 5,0011 ft. up from observing oljjects, andwould thus make Lmding dangerous. DIV IXJ FOG PREDICTION CHART 251 :^?igsosQ ^c^Oqo vd ^ (Nj ^o. <0 ^ ?si o gging asjq -j l3^^ n33au39 30M3a3Jjia ¥o(f Prediction Chart. 252 METEOROLOGICAL DATA [div. IX
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectaeronautics, bookyear
