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).
Note on the possibility of roar with overlap and its relation to back pressure in the exhaust system.
| Identifier | ExFiles\Box 1\10\ B001_X106 TO X 110-page059 | |
| Date | 1st October 1932 | |
| - 2 - E/HP.1.10.32. possibility of roar with the position of overlap shown, but this trouble has not yet arisen and is found to be less pronounced with less back pressure in the exhaust system. E.{Mr Elliott - Chief Engineer} | ||