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).
Leakage tests of a shaft seal under varying pressure and temperature conditions.
| Identifier | ExFiles\Box 111\4\ scan0111 | |
| Date | 1st June 1939 | |
| -2- shewed a tendency to flatten out (BL.2336, Sheet 2). Even when the pressure was only that due to a head of 1' of oil, there was considerable leakage when running the shaft in the reverse direction. Finally, to observe the effect of temperature variation upon the leakage, the shaft was run at various speeds with the oil under a pressure of 30 lbs/sq" and the temperature kept at 40° C, 50° C. and 60° C. in turn. It was found that, as one would expect, as the temperature increased, the leakage increased rapidly, (BL.2336 Sheet 3). The original intention was to fit a "Perfect" or "Angus" type of seal in front of the Acme thread seal, but since the rate of supply of oil to the thread was not then controllable it was deleted for these tests the intention being to refit same when the capabilities of the thread alone were known. The scheme is now superseded by GCD.1340, grease packed double seal, preparations for which test are now in hand. HPS{Horace Percy Smith - Experimental Factory Mgr}/B1. J.Bromilow. N. Bell | ||