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).
Graph plotting sliding effort against torque for a Peregrine propeller shaft with hardened splines.
| Identifier | ExFiles\Box 148\4\ scan0011 | |
| Date | 8th October 1932 | |
| HS{Lord Ernest Hives - Chair} 738 PEREGRINE PROP: SHAFT 8-10-32 RR.SCH.168/9. SHORT TYPE. HARDENED SPLINES. SLIDING EFFORT - LB. 600 400 200 50 100 150 200 TORQUE LB FT. KB | ||