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).
The performances of shunt wound dynamos suitable for external regulator control.
| Identifier | WestWitteringFiles\F\January1921\ Scan18 | |
| Date | 1st January 1921 | |
| To R.{Sir Henry Royce} from EFC. c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to PN.{Mr Northey} c. to By.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to Da.{Bernard Day - Chassis Design} c. to EWT. for R.R. Inc. ORIGINAL. X.294 - PERFORMANCES OF SHUNT WOUND DYNAMOS SUITABLE FOR EXTERNAL REGULATOR CONTROL. Further to our EFC1/T5.10.20 (with which we issued cold and hot volt-speed and ampere-speed curves for plain shunt wound dynamos, together with a table of particulars and other details), herewith please now receive photostat copy containing :- III Cold open circuit volt-speed curves. IV Hot " " " " V Cold ampere-speed curves. VI Hot " " " In the above the curves for Bosch, Smith A, Smith 2D and Bijur are identical with those already issued on small sheets I and II under our EFC1/T5.10.20, but the curves for cold and hot conditions have been separated into distinct groups and similar curves for U.S.A. Bosch, Rotax and Westinghouse dynamos have been added. The results now presented, including the heating test results described below, comprise therefore the complete experimental performance results of shunt wound dynamos. The cold and hot ampere-speed curves are the performances working on two defined volt-ampere characteristics one each for the cold and hot condition, as indicated by the scale of operating voltage at the side. Contd. | ||