Three methods of calculating range and endurance of airplanes (1927)
NASA Technical Reports Server (NTRS) · leaf 8
Ke, Ke', and Ke' may be determined accurately, Table VII has been prepared to give directly the desired factor for any value of Wfl Wo likely to be used. AVERAGE CRUISING SPEED Equations (14a) and (17a) or (15a) and (18a) supply a simple method for determining the ratio of the average cruising… … Fig. 5.—Average cruising speed variation with fuel load THE FACTOR METHOD OP CALCULATING RANGE AND ENDURANCE The "factor method" of calculating range and endurance was developed by the writer for routine estimating work in the Bureau of Aeronautics. Briefly stated, the method consists of a…
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