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).
Secret memorandum regarding the felt lining for the Spectre Air Silencer.
| Identifier | ExFiles\Box 93\2\ scan0044 | |
| Date | 7th June 1935 | |
| x308 Wyman. Is this. O.K? Rm.{William Robotham - Chief Engineer} To BY.{R.W. Bailey - Chief Engineer} from E/JNR.{Charles L. Jenner} SECRET. E/JNR.{Charles L. Jenner}2/HP.7.6.35. Yes. c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} re SpectreCodename for Phantom III - Air Silencer. Good We send to you herewith:- LeC.4536 showing the felt lined air silencer. The felt should be stuck to the surfaces with adhesive, in addition to being fixed with staples or rivets. Staples are only used on the internal fixings and rivets are used on the outside cylinder and the end plates on account of appearance and wiping down. LeC.4536 herewith. E/JNR.{Charles L. Jenner} | ||