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 Thrust and Power versus Engine Speed for a standard 40/50 6-bladed fan and an experimental E.A.C. fan.
| Identifier | ExFiles\Box 24\4\ Scan320 | |
| Date | 25th March 1925 | |
| POWER TO DRIVE FAN (HP) THRUST (lbs.wt.) ENGINE SPEED (rpm) 1. STD. 40/50 6 BLADED FAN. (DRIVEN WITH 1.20 RATIO) 15. E.A.C. FAN INSTRn FOR INITIAL PRODUCTION (DRIVEN WITH 1.14 RATIO) THRUST POWER COMPARISON OF STANDARD 40/50 AND EXPERIMENTAL E.A.C. FAN E.F.C. 25/3/25 | ||