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).
Recommendations for future tests on a vibrating machine to more accurately locate resonant frequencies.
| Identifier | ExFiles\Box 90\5\ scan0071 | |
| Date | 13th September 1935 | |
| -3- Ha/FJH.{Fred J. Hardy - Chief Dev. Engineer}25/KW.13.9.35. In future tests on the vibrating machine we shall have to take readings at closer intervals in order to locate the resonant frequencies more accurately. The resonant frequency will be the best means of judging the effect of alterations to stiffness as the amplitude obtained depends upon the magnitude of the impulse applied and therefore the setting of the machine. Closer regulation of speed is also desirable. Ha/F.J.Hardy. | ||