IN the articles on the VB‐10 tandem‐engined single‐seater and the Arsenal de l'Aéronautique the Vernisse coupling has been mentioned. The desirability of a constant‐torque coupling was realized as long ago as 1937 and work was begun on the design in 1939. The idea was to develop a coupling primarily to enable engines to be mounted in tandem so that they would drive co‐axial airscrews, but also to provide a shaft joint that would take up structural deflexions for extension drives of single engines.
(1947), "The Vernisse Coupling for Tandem Engines: A Brief Note on the Ingenious Constant‐Torque Joint Developed by the Arsenal de l'Aeronautique", Aircraft Engineering and Aerospace Technology, Vol. 19 No. 7, pp. 217-217. https://doi.org/10.1108/eb031526
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