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).
Cross-sectional drawing of an Air Silencer with dimensions and material specifications.
| Identifier | ExFiles\Box 126\2\ scan0166 | |
| Date | 25th July 1939 guessed | |
| SS{S. Smith}247 AIR SILENCER AVERAGE THICKNESS OF MATERIAL = 1/16" STEEL WOOL RING 1 1/4" x 7/8" THICK FELT WASHER 1/4" THICK x 7 1/2" DIA 4.250 2.000 DIA 1.000 6 HOLES 1/2" DIA 15/16" DIA 1/32" 3.500 | ||