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 plotting air temperature increase versus road speed for a radiator using hexagonal matrix tubes.
| Identifier | Morton\M19\ img291 | |
| Date | 23th September 1931 | |
| TESTS:- AIR TEMPERATURE RISE ACROSS RADIATOR. AIR TEMPERATURE RISE FROM FRONT OF RADIATOR TO FLOORBOARDS. USING 3 1/2" HEXAGONAL MATRIX TUBES. AVERAGE AIR TEMP: 12.5°C TEMP: - 57.5°C TEMP: - 85°C BONNET ON. AVERAGE AIR TEMP: 13.5°C CYLINDER WATER TEMP: 68°C CYLINDER WATER TEMP: 85°C AIR TEMPERATURE INCREASE (°C) SHADED AREA REPRESENTS AIR TEMP: INCREASE DUE TO EXHAUST AND ENGINE HEAT RADIATION SPEED (M.P.H.) ROAD SPEED (M.P.H) ACROSS RADIATOR:- FRONT OF RADIATOR TO FLOORBOARDS:- 1) LOW WATER TEMP. 2) HIGH WATER TEMP. | ||