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 showing the power absorbed in horsepower versus thrust in pounds for a standard 40/50 6-bladed fan and a 3-bladed version.
| Identifier | ExFiles\Box 75\3\ scan0151 | |
| Date | 20th November 1924 | |
| POWER ABSORBED. BY VARIOUS FANS AT VARIOUS THRUSTS. 1. STD 40/50 6 BLADED FAN. 2. - DITTO - WITH 3 BLADES REMOVED. H.P. THRUST IN LBS. D.{John DeLooze - Company Secretary} 1 2 H.E.W. 20-11-24 E.F.C. 20/11/24 | ||