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).
Achieving silence with a baffle for a long hot air pipe and sending a standardisation sheet.
| Identifier | WestWitteringFiles\J\February1923\ Scan36 | |
| Date | 7th February 1923 guessed | |
| contd:- -2- baffle we can obtain the same degree of silence as with the long hot air pipe. We are sending round a standardisation sheet for this. Hs.{Lord Ernest Hives - Chair} | ||