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Have One Rule in Mind.
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 28. 

Have One Rule in Mind.

In this struggle for mastery in flying machine efficiency all the contestants keep one rule in mind, and this is:

"The carrying capacity of an aeroplane is governed by the peripheral curve of its carrying surfaces, plus the speed; and the speed is governed by the thrust of the propellers, less the `head-on' resistance."


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Their ideas as to the proper means of approaching the proposition may, and undoubtedly are, at variance, but the one rule in solving the problem of obtaining the greatest carrying capacity combined with the greatest speed, obtains in all instances.