THE problem of the machine finishing of perfectly balanced airscrews is claimed to have been solved in France with the appearance of a machine developed for the purpose after several years of experiment by the Société L'Helice Equilibré.
(1934), "A Machine for Producing Airscrews: A French Addition to Airscrew Workshop Equipment Designed on Novel Lines", Aircraft Engineering and Aerospace Technology, Vol. 6 No. 12, pp. 333-333. https://doi.org/10.1108/eb029884
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