Adapting a 40/50 carburetter for the Goshawk 11 engine, based on calculations and Mr. Royce's instructions.
| Identifier | ExFiles\Box 5\4\ 04-page044 | |
| Date | 20th April 1922 | |
| To EP. {G. Eric Platford - Chief Quality Engineer} from E. {Mr Elliott - Chief Engineer} c. to CJ. X4228 E3/M20.4.22. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. CARBURETTER. X.4228. X276F We send you herewith a copy of a memo. E2/M13.4.22.) dealing with the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. carburetter, also a blue print of drawing LeC.1552, referred to therein. This was got out in accordance with Mr. Royce's instructions that the 40/50 carburetter proportions should be reduced in size to suit the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)), and then compared with the carburetters we are testing. The reduction is based on the 40/50 developing 85 HP. as against the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. engine developing 55 HP. The calculations seem to show that we ought to make the low speed throat smaller, and the high speed throat larger on Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. carburetter. E. {Mr Elliott - Chief Engineer} see original for Blue Print | ||
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).