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 comparing the performance of a standard 40/50 fan against an experimental E.A.C. fan.
| Identifier | ExFiles\Box 75\3\ scan0070 | |
| Date | 27th March 1925 | |
| 1. STD. 40/50 6 BLADED FAN (DRIVEN WITH 1.20 RATIO) 15. E.A.C. FAN INSTRD FOR INITIAL PRODUCTION (DRIVEN WITH 1.14 RATIO) THRUST POWER POWER TO DRIVE FAN (H.P.) THRUST (lbs. wt.) ENGINE SPEED (rpm) COMPARISON OF STANDARD 40/50 AND EXPERIMENTAL E.A.C. FAN E.7.C. 27/3/25 | ||