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).
Relative merits of M.S. and S. engines for 'Night Bomber' aircraft.
| Identifier | ExFiles\Box 36\2\ scan 208 | |
| Date | 3rd March 1929 | |
| To Lp.{Mr Lappin} from Lr.{Mr Ellor} X2934 Lr{Mr Ellor}3/LG12.3.29. e.{Mr Elliott - Chief Engineer} to RG.{Mr Rowledge} EP.{G. Eric Platford - Chief Quality Engineer} c. to HS.{Lord Ernest Hives - Chair} PV c. to Wor.{Arthur Wormald - General Works Manager} TL RR. 'F' M.S. & S. ENGINES. X2431 Referring to Lp{Mr Lappin}3/AV/D2. 3.29. With regard to the relative merits of the M.S. and S. engines for installation in 'Night Bomber' aircraft, I have discussed this matter with Rg.{Mr Rowledge} and would advise as follows :- (a) The M.S. engine is preferable for taking off and climbing at the lower altitudes. At the operational height, the B.HP. will be less than the S. engine and on this account the reliability may be considered relatively greater. (b) If the aircraft designers are satisfied that the B.HP. available for taking off, taking into account the <strikethrough>xxxt</strikethrough> extra weight of fuel carried, we are of the opinion that the F.S. engine can be run successfully for periods of 10 hrs. at the operational heights. As requested we enclose blue prints of curves shewing the fuel consumptions under throttled conditions at various r.p.m. for the moderate F.{Mr Friese} and 10,000 ft. S/C. engines. In answer to enquiries from Vickers and Handley-Page, we have forwarded copies of curves to <strikethrough>these</strikethrough> <strikethrough>xxxxxxxx</strikethrough> firms. Lr.{Mr Ellor} | ||