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 the Peregrine engine with a turbulent head and open exhaust, showing B.M.E.P and Induction Depression.
| Identifier | ExFiles\Box 179b\2\ img115 | |
| Date | 4th October 1932 guessed | |
| TURBULENT HEAD PEREGRINE ORMS Le C 3223 OPEN EXHAUST THROAT BOTH HEADS 3222 RM{William Robotham - Chief Engineer} PR 33 B.M.E.P. INDUCTION DEPN INS HG A B 110 100 90 80 70 60 4 3 2 1 0 3500 4000 4500 5000 | ||