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 detonation intensity at varying speeds for 'R' Mod supercharged engines.
| Identifier | ExFiles\Box 179\2\ img032 | |
| Date | 4th December 1931 | |
| "R" MOD SUPERCHARGED ENGINES CURVE 102 'R' DETONATION INTENSITY AT VARYING SPEEDS WITH ENGINE DEVELOPING 1000 B.H.P. & ALSO AT CORRESP.G TAKE-OFF POWERS AND SPEEDS ENGINE: R MS 25 WITH 6/1 CR{Mr Cra???ster / Mr Chichester} PISTONS & 8 9/16 % GEARS FUEL: D.T.D. 134 PLUGS: LODGE A.2. BAR: 765 M/M T/H AIR 13°C B.M.E.P. 354 B.H.P N CORRECTED B.M.E.P. AT 1000 B.H.P. LBS/SQ. IN. ENGINE R.P.M. A.A. REPRESENTS B.M.E.P AT 1000 B.H.P AT VARYING SPEEDS N B.B. CORRESPONDING TAKE-OFF POWERS AND SPEEDS TAKE-OFF SPEED = 95% N. R.P.M. S.D. 4/12.31 | ||