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).
Performance graph for a fluid transfer fuel pump, plotting delivery rates against inlet depression and altitude.
| Identifier | ExFiles\Box 149\3\ scan0157 | |
| Date | 21th October 1940 | |
| FLUID TRANSFER FUEL PUMP 21.10.40 PUMP R.P.M 2400 D.T.D. 230 FUEL .750 DIA PIPES BYE-PASS VALVE IN ACTION RELIEF VALVE OUT OF ACTION UNRESTRICTED DELIVERY. RELIEF VALVE IN ACTION. THE INLET DEPRESSION WAS VARIED BY A RESTRICTION VALVE DELIVERY (PTS/HR) 4000 3000 2000 MERLIN PUMP 1560 R.P.M RELIEF VALVE OUT OF ACTION UNRESTRICTED DELIVERY. 1000 APPROXIMATE REQUIREMENTS OF MERLIN ENGINE 800 PTS/HR ALTITUDE (1000 FT) 0 5 10 15 20 25 30 35 40 INLET DEPRESSION ("HG.) 0 4 8 12 16 20 24 MT 201. | ||