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 temperature rise in the top tank during idling tests with various shutter and fan configurations.
| Identifier | ExFiles\Box 118\1\ scan0267 | |
| Date | 6th May 1940 | |
| 1-R-1 IDLING TESTS FIGURED GIVEN ARE MK.{R. E. B. Meade-King} VI MATRIX RATE OF TEMP. RISE IN TOP TANK °C/MIN 0 0.5 1.0 1.5 2.0 MOVEABLE SHUTTERS STD. FAN 5.00" BLADES FIXED SHUTTERS 35° STD FAN 5.00" BLADES FIXED SHUTTERS 35° FAN BLADE ANGLE 23° 5.00" BLADES FIXED SHUTTERS 35° No FAN FIXED SHUTTERS 50° UPPER HALF RAD BLANKED OFF STD. FAN 5.00" BLADES FIXED SHUTTERS 50° LOWER HALF RAD BLANKED OFF STD. FAN 5.00" BLADES RM{William Robotham - Chief Engineer}/COL 6/5/40 (3) FIG. 3 | ||