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).
Graph plotting pressure against piston velocity under various air temperatures, with a diagram illustrating passage design.
| Identifier | WestWitteringFiles\R\2December1927-February1928\ Scan153 | |
| Date | 8th February 1928 guessed | |
| GRAPH II MAX: PISTON VEL: % VARIATION NORMAL TEMPS: 6% % VARIATION EXCEPTIONAL TEMPS: 20% PRESSURE LBS / D" AVERAGE VEL: PISTON VEL: INS/SEC AIR TEMP -10°C. +10°C } NORMAL TEMP VARIATION +25°C +40°C. ILLUSTRATING THE WIDELY DIFFERENT TYPES OF PASSAGE REQUIRED TO PRODUCE THE DESIRABLE K.E. AND TURBULENCE LOSS. PASSAGES .100 LONG .083 DIA: 2.5" .137 | ||