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).
Explaining the concept of critical atmospheric temperature for engine cooling system tests at Brooklands.
| Identifier | ExFiles\Box 29\3\ Scan123 | |
| Date | 29th August 1925 | |
| To B.J. from Hs.{Lord Ernest Hives - Chair} x788 Hs{Lord Ernest Hives - Chair}4/LG29. 8. 25. BROOKLANDS TESTS. x788/766 With reference to the attached ref. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}/LG8. 7. 25. It will be seen that the wording in para. (c) refers to critical atmospheric temperature and the figures on the following page refer to radiator water temperature. Critical atmospheric temperature is the temperature which, if a car is run full power at that temperature, the water will boil, therefore, it will be seen, the less efficient the cooling system the lower the criticial atmospheric temperature must be to prevent the water boiling. We attach a report which explains the method of carrying out the tests. Hs.{Lord Ernest Hives - Chair} | ||