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 improving cooling to reduce wear, based on temperature analysis.
| Identifier | ExFiles\Box 141\2\ scan0336 | |
| Date | 10th September 1940 | |
| Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby}1/ET.10.9.40 - 4 - out, subsequent wear may vary with change of temperature well below the burning out temperature of about 250° C.; (e.g. when front temperature is 100° C. and rear temperature is 150° C). In any case, the main conclusion is that better cooling is essential, and when this is provided, we should be rid of most of the trouble. RECOMMENDATIONS. Before making suggestions to design, it would be interesting to find the cooling rates of 2 rib drums such as EXS.1755 on 12.B.V and, at the same time, of a scrap drum with all fins removed. We also consider that, if necessary, air deflectors could probably be developed to give say 20% improvement. Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby} | ||