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).
Table of experimental fan results, comparing thrust, power, and thrust/power ratios at two different speeds.
| Identifier | ExFiles\Box 75\3\ scan0075 | |
| Date | 10th March 1925 | |
| 10a. 3.1 .45 6.89 9.0 1.42 6.33 E.A.C. EXPERIMENTAL FAN RESULTS. NO. Fan. Speed 1200. Thrust. (lbs) Power. (H.P.) Thrust/power. Speed 2000. Thrust. (lbs) Power. (H.P.) Thrust/power 10b. E.A.C Fan off 44PK Bent & twisted more 4.19, .60, 6.99, 12.0, 1.96, 6.12 10c. Further modification to 10b 4.50, .64, 7.03, 12.81, 2.17, 5.91 10d. 10c with the initial angle increased. 4.25, .62, 6.85, 12.125, 1.99, 6.10 15. E.A.C Fan handed to D.O. 4.81, .65, 7.39, 13.25, 2.22, 5.97 16a. Wide Blade Fan as received. 2.81, .47, 5.98, 7.25, 1.28, 5.67 16. 16a raked more but with zero attack angle 5.88, .92, 6.40, 15.81, 3.14, 5.03 17. 16b with angle of attack increased 5.63, .78, 7.22, 14.75, 2.54, 5.81 18. 16c with leading edge cut down 5.50, .77, 6.66, 15.35, 2.61, 5.85 60668 X 10/17 | ||