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).
Report page discussing engine cooling system considerations, including tank position, header tanks, and steam pocket formation.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan173 | |
| Date | 11th December 1930 guessed | |
| - 6 - (2) The tank position relative to the cylinder jackets when tilted is very important due to the fact that it governs the air space in the jackets on filling the system to its normal level and the greater the air space the more prone the system becomes to the formation of steam pockets. (3) When there is a system with a header tank in a low position (e.g. 'Fury' header tank) giving a large air space in the jackets it is advantageous when warming up, (after the oil pressures are seen to be normal) to run the engine as near 1500 R.P.M. as possible. (This of course would be governed by the type of aircraft and weather conditions. In the winter more care would have to be exercised with regard to oil temperatures.) This would help to check the formation of steam in the jackets. (4) The filling of the system is very important as illustrated by the sketch. Similar tests are to be made with the engine level to see if the water displacement is as bad as when the engine is tilted. Hs{Lord Ernest Hives - Chair}/TAG. Sketches & Curves Attached. No. 199F.. 208F. 210F. 211F. 212F. 213F. 216F. 218F. | ||