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 of performance curves showing gas velocity past valves for a Lorraine-Dietrich engine.
| Identifier | ExFiles\Box 22\4\ Scan105 | |
| Date | 25th March 1927 | |
| 8 INDICATED MEAN EFFECTIVE PRESSURE (LBS PER SQ IN) GAS VELOCITY. (FEET PER SEC) R.P.M. OF ENGINE. LORRAINE-DIETRICH ENGINE. CURVES SHEWING GAS VELOCITY PAST VALVES. (INLET AREA AT VALVES = 1.61 SQ IN) GAS. VEL. / I.M.E.P. GAS. VEL. / R.P.M. GAS. VEL. / R.P.M. GAS. VEL. / I.M.E.P. 20 H.P. R.R. (INLET AREA AT VALVES = 1.04 SQ IN.) 25-3-27 | ||