Two graphs showing performance gains in speed and power from exhaust momentum manifolds on engines with fixed pitch airscrews.
| Identifier | ExFiles\Box 134\1\ scan0050 | |
| Date | 14th December 1937 guessed | |
| EXHAUST MOMENTUM MANIFOLDS TOP GRAPH: TITLE: GAIN IN SPEED DUE TO INCREASE IN ENGINE POWER WITH FIXED PITCH AIRSCREW LEFT Y-AXIS: % GAIN IN H.P. AT F.T. FROM ENGINE CHARACTERISTICS. RIGHT Y-AXIS: % INCREASE IN SPEED IN M.P.H. X-AXIS: % INCREASE IN R.P.M. SOLID LINE: % INCREASE IN ENGINE POWER - FROM TYPE TEST CHARACTERISTICS - ALL S/C ENGINES DASHED LINE: % INCREASE IN SPEED M.P.H. BOTTOM GRAPH: TITLE: GAIN IN SPEED AT VARIOUS MACHINE SPEEDS CORRESPONDING TO POWER INCREASE WITH R.P.M. Y-AXIS: M.P.H. GAIN DUE TO INCREASED POWER X-AXIS: % INCREASE IN R.P.M. CURVE LABELS: 200, 250, 300, 350, 400 | ||
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).