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 curves for a Hispano engine showing horse power, efficiency, and pressures against RPM.
| Identifier | ExFiles\Box 22\1\ Scan147 | |
| Date | 10th March 1924 | |
| HISPANO ENGINE HORSE POWER MECH. EFF. % ENGINE R.P.M. MECH. EFF. I.H.P. B.H.P. H.P. TO ROTATE ENGINE I.M.E.P. AND B.M.E.P. LBS / SQ' EXPLOSION PRESSURE LBS / SQ' VOL EFF. % COMPR. PRESSURE LBS/SQ' I.M.E.P. B.M.E.P. AVERAGE FORCE THRO'OUT STROKE COMPRESSION PRESSURE INDICATED VOLUMETRIC EFFICIENCY FIGURES OBTAINED WITH ORIGINAL R.A.E. INDICATOR Timing Diagram text: TDC, BDC, I.O., E.O., 220°, 30°, 40° | ||