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).
Technical note summarizing experiments on high tension distributing wires within a tube and the effects of earthing.
| Identifier | ExFiles\Box 61b\4\ scan0199 | |
| Date | 24th November 1919 | |
| To R.{Sir Henry Royce} from EFC. c. CJ. Bn.{W.O. Bentley / Mr Barrington} E.{Mr Elliott - Chief Engineer} c. By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} EH. X4119 EFC4/T24.11.19. X.3129- RE HIGH TENSION WIRES IN TUBE. X4119 The object of this note is to summarize the results obtained on the bench in connection with the use of a tube through which the high tension distributing wires are passed. The two reports on such experiments are EFC1/T22.5.19 and EFC1/T14.11.19. In the previous report of the two, we gave the results of experiments made with the object of ascertaining the magnitude of effects produced by the discharge through any one wire, on the other wires, and shewed how, if the wires were used through a metal tube, this metal tube should be earthed to minimise such effects. In that report we recommend earthing the tube for this reason; that it minimised the electrostatic induction effects on the tube and on the other wires, not appreciating at the time that the consequent reduction in intensity of the main spark thereby caused might be sufficient to cause misfires. In the second report referred to, we have shewn how the effect of earthing the tube reduces the possible length of main spark, but does not appreciably reduce it if the tube is left insulated. In the use of a metal tube we are up against two distinct effects :- Contd. | ||