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).
Bar chart comparing the rate of water temperature increase during idling tests for various fan configurations on a 30-G-VII engine and a Buick.
| Identifier | ExFiles\Box 125\3\ scan0133 | |
| Date | 22th June 1938 | |
| RATE OF INCREASE OF WATER TEMP. (°C / MIN.) TEST NS.{Norman Scott} 4: BUICK 2: 30-G-VII - STANDARD WRAITH FAN 8A: 30-G-VII - SHORT BLADED FAN 8B: 30-G-VII - SHORT BLADED FAN WITH INCREASED BLADE SET ON TRAILING EDGE - VERY NOISY 10: 30-G-VII - BUICK FAN 14: 30-G-VII - NO FAN 18: 30-G-VII - NO FAN FITTED 20: 30-G-VII - SHORT BLADED FAN AS ON TEST 8B. 3.80 30-G-VII AND BUICK. - BROOKLANDS TESTS - IDLING COMPARISON. FIG. IV. 30-G-VII - N°2 MATRIX. 30-G-VII N°1 MATRIX. 22.6.38 | ||