Research Reports and Memoranda

The usual method of determining the characteristics of an airscrew by the curves of ? and x as a function of the advance/ diameter ratio neglects the deformations to which an airscrew in rotation is subject, and, desiring a more accurate method of investigation, the Service des Recherches de l'Aéronautique asked Commandant Ledoux to work out a method capable of practical application for the measurement of deformations. This report gives in detail the results of his work.