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).
Clarifying the design of the Goshawk engine suspension tube fixing regarding thermal expansion.
| Identifier | WestWitteringFiles\I\May1922\ Scan40 | |
| Date | 13th May 1922 | |
| A.R. 235A (100 T) (S.H. 708, 10-19-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 9947 ORIGINAL RECEIVED MAY 16 1922 HS{Lord Ernest Hives - Chair} To Hs.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} GOSHAWK 1. ENGINE FIXING. X3535 In amplification of our telegram of the 12th inst., in reply to your Hs{Lord Ernest Hives - Chair}7/LG11.5.22., the suspension tube is intended to be tightly gripped on the engine, and to slide on the oilless bushing in the front. The caps should therefore have gaps as in LeC 1345. The caps in LeC 1486 were erroneously shewn without a gap. We considered at the time the question of relative expansion of steel tube and aluminium crankcase lengthways and it was decided that the tube would have to creep through the clamp if it wanted to. * with rise in temperature. E.{Mr Elliott - Chief Engineer} | ||