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).
List of various fans tested, along with their fan tip diameters and handwritten notes.
| Identifier | ExFiles\Box 75\3\ scan0027 | |
| Date | 16th December 1924 | |
| 16.12.24. EAC FAN TESTS. Nos. & Descriptions of fans tested. Fan tip dia. 1. Standard 40/50 six-bladed fan. 22" 2. Standard 40/60 six-bladed fan, with three blades removed. 22" 3. EAC. four-bladed fan. 23" 4. Hispano fan. 17½" 5. High speed 40/50 fan - six blades. 22" 6. Ditto, with three blades removed. 22" (curves not given) 7. Goshawk fan. 18" 8. Fan made to recommendations of Prof. Watts. 22" 9. 2nd. Fan made to recommendations of Prof. Watts. but with swept back blades. 22" 10. Expt. EAC. fan - first modification. 23" 11. Ditto, second modification. 23" } curves to follow 12. Ditto, third modification. 23" } EFC. | ||