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).
Weybridge engine tests of a 1350 HP Merlin power plant for the Beaufighter II, detailing cooling modifications to the rear cowling.
| Identifier | ExFiles\Box 10\3\ 03-page194 | |
| Date | 22th September 1942 | |
| D.M.S./22.9.42 REPORT ON INVESTIGATION INTO - III TRIAL WEYBRIDGE ENGINE TESTS. 1350 H.P. MERLIN POWER PLANT FOR BEAUFIGHTER II. A modification to the rear cowling has now been developed which improves the cooling sufficiently for the installation to be acceptable under I.T.O. conditions as laid down by the R.A.E. We have installed the modified cowlings on the Port engine of the Beaufighter, but find that we are unable to obtain a true comparison with the results of the previous test No. A.13962/1, due to a marked deterioration in the cooling of the starboard engine which is still in its original condition. Some attempt is being made to improve the starboard engine by careful baffling, and the results of this work are presented in Test Report No. A.13962/2 dated 22.9.42. Work has now ceased for the Winter. | ||