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).
Description of an electrical indicator system with a Cathode Ray Tube for diagram analysis.
| Identifier | ExFiles\Box 138\2\ scan0202 | |
| Date | 4th November 1940 | |
| Rm{William Robotham - Chief Engineer}/RC.{R. Childs}3/ET.4.11.40. - 2 - "The electrical output from the various indicating units is applied to a resistance coupled three valve amplifier of a type suitable to the range of frequencies involved, from the lowest to the highest en-gine speeds, and this amplifier includes an integrating stage for conver-ting rate of change diagrams (velocity) to the usual direct diagrams when necessary. "It is fitted with all the necessary switches for changing from one indicating unit to another and incorporates a motor generator for high tension supply, and controls for spreading the indicator dia-grams for examination of details, to an extent beyond anything likely to be required for either routine tests or research purposes. "Alternatively, the diagrams may be contracted by the same controls so that almost the entire cycle is visible at one time on the indicator screen. "A Cathode Ray Tube provides the indicator screen on which the diagrams are visible." Rm{William Robotham - Chief Engineer}/RC.{R. Childs} | ||