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Members’ Machines: No. III.: The Clarke Monoplane

Published online by Cambridge University Press:  24 August 2017

H. F. Lloyd
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The Aeronautical Journal , Volume 14 , Issue 56 , October 1910 , pp. 154 - 156
Copyright
Copyright © Royal Aeronautical Society 1910

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References

* In this connection it may be of interest to state that one of the “Clarke” propellers, which were recently tested by Vickers, Maxim, Ltd., on their new 110 ft. testing arm at their Barrow works, was found to have an efficiency of 71.8%. (This result was obtained with even over 40% slip, their apparatus, originally designed for propellers of dirigibles, being too large to allow any aeroplane piopeller to rotate it at its proper flight speed.)