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 showing the estimated power output of a Phantom engine against RPM at a 4.6 to 1 compression ratio.
| Identifier | ExFiles\Box 69\4\ scan0378 | |
| Date | 23th February 1928 guessed | |
| ESTIMATED POWER OUTPUT OF PHANTOM WORKING WITH A CONSTANT INDUCTION PIPE DEPRESSION OF 1 INCH OF MERCURY. COMPN RATIO 4.6 TO 1. B.H.P. R.P.M. INDUCTION PIPE DEPRESSION INS. HG. ESTIMATED POWER WITH ONE INCH DEPN STD POWER CURVE WITH 4.6 TO 1 COMPN RATIO. TEST BED EXH SYSTEM. STD INDN PIPE DEPN CONSTANT DEPN OF ONE INCH HG No.6. | ||