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).
Report page discussing engine performance data, propeller limitations, and design schemes for the F.X. engine.
| Identifier | ExFiles\Box 36\2\ scan 089 | |
| Date | 12th November 1926 guessed | |
| contd : -3- R.P.M. HP. B.M.E.P. 1800 420 143 2000 455 139.5 2200 470 130.7 2400 484 123.5 2500 484 119.0 There is no doubt that we shall on F.X. be able to equal the power performance of any other engine. If we can suitably arrange it, it would appear we should obtain better results in the air with the direct drive engine, with the max. B.M.E.P. at 2000 or 2200, even if we sacrifice power at 2500. We have not heard of any propeller on a normal high speed machine which is satisfactory above 2200 r.p.m. We believe we shall be able to make a satisfactory induction system with a duplex carb. at the rear. This is the scheme we consider we ought to concen-trate on, because as you point out, it will enable head resistance to be reduced to a minimum. Hs.{Lord Ernest Hives - Chair} | ||