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 diagram of a suggested experimental Volute Suction Drain.
| Identifier | WestWitteringFiles\U\January1930-April1930\ Scan078 | |
| Date | 28th January 1930 | |
| VOLUTE SUCTION DRAIN. FROM VOLUTE. TO INDUCTION PIPE. DIRECTION OF AIR FLOW 30° V SUGGESTED TYPE FOR EXPERIMENT. FOR DIMENSIONS SEE V.771. ael 28/1/30 | ||