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).
Results of cooling tests conducted at Brooklands on the 37 EX car, comparing different radiator matrix and fan configurations.
| Identifier | ExFiles\Box 94\3\ scan0225 | |
| Date | 24th June 1937 guessed | |
| (SHEET 3) RESULTS OF COOLING TESTS CARRIED OUT AT BROOKLANDS ( 40 MPH FULL THROTTLE ) ON 37 EX CAR CONDITIONS OF TEST AIR TEMP DURING TESTS °C CRITICAL AIR TEMP °C STD. MATRIX B.S.O 16.5 35.0 STD. FAN STD. MATRIX B.S.O 24.0 38.0 5 BLADE FAN 1.0/1 RATIO STD. MATRIX B.S.O 24.0 41.5 5 BLADE FAN 1.1/1 RATIO STD. MATRIX B.S.O 18.0 42.0 5 BLADE FAN 1.2/1 RATIO LIGHTENED MATRIX B.S.O 21.0 27.0 STD. FAN LIGHTENED MATRIX B.S.O 21.0 30.0 5 BLADE FAN 1/1 RATIO HARRISON MATRIX B.S.O 24.0 38.5 5 BLADE FAN 1/1 RATIO GALLAY MATRIX ( 60 M.M. ) B.S.O 25.5 25.5 5 BLADE FAN 1/1 RATIO MATRIX WITH AIR SLOTS B.S.O 22.0 28.5 5 BLADE FAN 1/1 RATIO NOTE (A) B.S.O DENOTES BONNET SHUTTERS OPEN (B) CRITICAL AIR TEMP IS MINIMUM ATMOSPHERIC TEMP NECESSARY FOR WATER TO REACH 100°c IF DRIVEN AT 40 MPH FULL THROTTLE LONG ENOUGH. (C) MINIMUM ATMOSPHERIC TEMP FOR WATER LOSS TO OCCUR IS 5°c ABOVE CRITICAL AIR TEMP (OWING TO STEAM VALVE) | ||