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).
Bench experiments conducted on EAC radiator fans.
| Identifier | ExFiles\Box 75\3\ scan0062 | |
| Date | 20th March 1925 | |
| R.R. 403A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} X1017 EXPERIMENTAL REPORT. Expl. No. 17. REF: EFC3/T20.3.25. To R.{Sir Henry Royce} from EFC. S E C R E T. c. CJ. Wor.{Arthur Wormald - General Works Manager} --------- c. Rg.{Mr Rowledge} Da.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. c. E.{Mr Elliott - Chief Engineer} By.{R.W. Bailey - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} BENCH EXPERIMENTS ON EAC. RADIATOR FANS. X8220 The results now reported complete our experiments on radiator fans so far as fans constructed in the present manner from sheet material are concerned. We are satisfied that, subject to this limitation of construction, combined with the respective limiting tip diameters, we have evolved both for the 20 HP. (as previously reported - EFC1/T9.2.25) and now for the EAC., the most efficient fan, or rather a type of blade in each case of maximum general efficiency. Our previous EAC. report was EFC1/T17.12.24, the method of working still being as therein described. Of the results reported in EFC1/T17.12.24, a selection namely of (1) (3) (9) & (10) has been made for comparison with a suitable selection of the further results, and curves of the whole group (comprising the two selections) are exhibited on the photostat copies herewith, the method of exhibition being similar to that adopted in our last (20 HP.) report. For instance, on sheet H we show both fan speed and power to drive (inclusive of power to slip and flex belt) on an axial thrust base, and on sheet I we show axial thrust Contd. | ||