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 the Anglo-Iranian Oil Company discussing a torsiograph and cathode ray indicator for engine testing.
| Identifier | ExFiles\Box 138\2\ scan0090 | |
| Date | 18th February 1937 | |
| ANGLO-IRANIAN OIL COMPANY FORMERLY ANGLO-PERSIAN OIL CO. LIMITED. RESEARCH STATION. TELEPHONE: SUNBURY 666. YOUR REFERENCE Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}5/AP OUR REFERENCE RS{Sir Henry Royce's Secretary}/DF P.O. Box 1, CHERTSEY ROAD, SUNBURY-ON-THAMES. 18th February, 1937 Rolls Royce, Limited, Experimental Department, DERBY. Dear Sirs, With reference to your letter of the 12th instant, Messrs. Dobbie McInnes Ltd. are making a torsiograph for us for use in conjunction with the Standard-Sunbury Cathode Ray Indicator, and it is probably for that reason that they referred you to us. While we believe that the equipment in question will be suitable for critical speed determinations, both as regards speeds and deflection amplitudes, we feel it is still too much in the experimental stage to recommend it. Even when we are satisfied that it is suitable for the ordinary car engine and for marine work, etc, it may require refinement to adapt it for aero engine work and our experiences last year, both at your works and at Bristol, have led us to the conclusion that it is essential for the aero engine builders themselves to undertake the development of cathode ray indicating equipment from its present position to one of suitability for the extreme conditions met with in aero engines. Yours faithfully, FOR THE ANGLO-IRANIAN OIL CO., LTD., (Signature: R.{Sir Henry Royce} Stansfield) CHIEF RESEARCH ENGINEER, SUNBURY LABORATORIES | ||