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).
Page 2 of a report discussing the efficiency of a more costly tube shape, with further tests pending.
| Identifier | ExFiles\Box 182\M19\ img160 | |
| Date | 21th April 1931 | |
| - 2 - Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/KT.21.4.31.contd we may be able to get adequate efficiency without this somewhat more costly-tube-shape. A further report will be sent as soon as we can complete the tests. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||