Notes on airplane flight endurance (I) (airplane section, S. & A. branch report)
United States. Army. Air Service. Engineering Division.
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DescriptionIt is the purpose of this report to describe a chart which will serve as a ready means of determining for any airplane the minimum horsepower required or the maximum horsepower available at any altitude which it is possible for the airplane to reach. The chart should be useful in calculations of airplane-flight endurance for determining (a) the maximum time in the air with a given fuel supply at the altitude of minimum horsepower required; (b) the corresponding speed; (c) the fuel supply necessary for a given duration at any altitude, either at full power or with throttled engines. In addition the curves of horsepower at altitude as presented may be used to indicate absolute ceiling.
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