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).
Blueprint illustrating the design and airflow of two Vortex silencer types, 'A' and 'B'.
| Identifier | ExFiles\Box 152\3\ scan0054 | |
| Date | 22th January 1931 guessed | |
| VORTEX 'B'. VORTEX 'A' SILENCER. CONSTRUCTION OF VORTEX SILENCER 'A'. EXPANSION CHAMBER. EXPANSION CHAMBER. CONSTRUCTION OF VORTEX 'B' IS SIMILAR WITH EXCEPTION OF DIFFERENT TYPE OF SILENCING UNIT. A.{Mr Adams} A.{Mr Adams} A.{Mr Adams} A.{Mr Adams} | ||