THE Rotol airscrew is the modern development of the GlosterHeleShaw Beecham unit originally designed by Dr. HeleShaw, developed by the Gloster Aircraft Company, and test flown in various aeroplanes some years ago. It is interesting to recall that this early British airscrew anticipated the present demand for constantspeed control. The first models, which were arranged either for hydraulic or electric operation, had welded hollow steel or forged aluminium alloy blades the current types, the constant speed and fully feathering hydraulic models, may be fitted with wooden blades. Unfortunately there are restrictions upon the publication of a description of the feathering airscrew, owing to a number of novel features in connexion with its design and construction, but it has been fully flighttested and will soon be on the Open List. However, the following description of the hydraulically operated constantspeed model covers the latest details available for publication.
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: Oct 1, 1938
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