The book United States Army Aircraft Production Facts was written by author George Webber Mixter Here you can read free online of United States Army Aircraft Production Facts book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is United States Army Aircraft Production Facts a good or bad book?
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The guns are subject to extreme va- riations of temperature and must be certain to function in intense cold, often below zero, as found at high altitudes. The ammunition must be superperfect to still further avoid the possibility of the gun jamming. An intensely high rate of fire is essential. On the ground 500 shots per minute is reckoned as sufficient for the machine gun, but aircraft guns have now been brought up to 950 to 1, 000 shots per minute. This high rate of fire is important because ...of the great speed at which airplanes move. The gunner can only train on his target for a few seconds at a time, and every possible shot is essential. When one considers that if an airplane fires at right angles at a fixed target with the plane moving at 100 miles per hour and the gun shooting 62 AIRCRAFT PRODUCTION FACTS. 880 bullets per minute the bullets will be spaced 10 feet apart on the target, the necessity for extreme rapidity of fire is evident. Aircraft guns are never fired continuously for any length of time r therefore water cooling is not required.
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