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).
Draft telegram regarding engine head failure analysis and stress testing.
| Identifier | ExFiles\Box 77\4\ scan0225 | |
| Date | 22th July 1943 | |
| @ Roycean SY with extension stresses which causes failure examine heads which have done much work test with extra high compression and bad detonation also hydraulically to find pressure necessary to fracture Royce | ||