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).
Letter from D.L. Ellis of the National Physical Laboratory inquiring about the trial of a silencer design.
| Identifier | ExFiles\Box 152\3\ scan0155 | |
| Date | 22th January 1934 | |
| Aero. Dept. The National Physical Laboratory Teddington Mdx. Your Ref: HB{C. E. Harcombe}/Rm.{William Robotham - Chief Engineer}7/KT. W.A. Robotham, Esq. Rolls-Royce Ltd. Derby. Dear Mr Robotham, I am writing to you again to ask if you have had any opportunity to try out my silencer design, and if so with what sort of success. I hope you wont think me impatient, but it is some time since I last wrote and I am naturally curious to know how things are proceeding. Yours faithfully D.L. Ellis. | ||