From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Analysis of forces, torques, and couples on propeller shaft joints and driving forks.
| Identifier | ExFiles\Box 148\4\ scan0178 | |
| Date | 4th January 1944 guessed | |
| 2. IF THE TWO PROPELLER SHAFT JOINTS ARE NOT IN THE SAME PLANE BUT AT 90°, THEN H = 2P . COS B T₃ = T₁ COS²B T₃ IS NOT UNIFORM OBVIOUSLY THIS ASSEMBLY MUST NOT BE USED DRIVING FORK AT 90° TO PLANE OF SHAFT LOADS ON DRIVING FORK H = P SEC B T₂ = 2HR = 2PR SEC B C₁ = P TAN B ROCKING COUPLE = 2PR TAN B = T₁ TAN B H = P SEC B COS B = P TORQUE T₃ = T₁ C₂ = H TAN B ROCKING COUPLE = 2PR TAN B = T₁ . TAN B . | ||