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 of thrust-fan speed curves for seven different fan configurations.
| Identifier | ExFiles\Box 181\M8\ img010 | |
| Date | 20th November 1924 | |
| B. THRUST-FAN SPEED CURVES OF VARIOUS FANS (SET B) 1. STD. 40/50 6 BLADE FAN. (22" DIA) 2. STD. 40/50 FAN WITH 3 BLADES REMOVED. 3. E.A.C. 4 BLADED FAN. (23" DIA) 4. HISPANO-SUIZA PAN. (17.5" DIA) 5. HIGH SPEED 6 BLADE FAN. (22" DIA) 6. HIGH SPEED FAN WITH 3 BLADES REMOVED. 7. GOSHAWK FAN. (18" DIA) Y-Axis: THRUST LBS X-Axis: FAN SPEED (R.P.M.) X-Axis Values: 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 Graph Annotation: VENTILATOR FAN. Bottom Right Stamp/Handwriting: NEW 28-11-24 E72 20/11/24 | ||