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).
Investigation into why Colonial type silencers are noisy and how they can be cured while maintaining ground clearance.
| Identifier | ExFiles\Box 152\3\ scan0010 | |
| Date | 6th January 1912 | |
| R.R. 512 (2 1/2 H) (X. 435. 14.12.11) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2227. Section 1300.X442 Description: Colonial type silencers why noisy, how can be cured. (+ still ground clearance) Date: 6/1/12 REPORT: Instrs by EP.{G. Eric Platford - Chief Quality Engineer} | ||