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 comparison graph for a Vickers Scout engine with standard and long duration cams at various pressure heights.
| Identifier | ExFiles\Box 43\3\ Scan186 | |
| Date | 18th September 1928 | |
| RR F.XI.S SHEET 1 ENGINE No 35 - "VICKERS SCOUT" .632 GEAR RATIO COMPARATIVE BED TESTS OF STANDARD & LONG DURATION CAMS THROTTLED INLET BOXES USED TO CREATE EQUIVALENT PRESSURE HEIGHTS CORRECTED TO A CONSTANT INLET TEMP. OF 15°C. REFERENCE TO CURVES.- x ------ ORIGINAL TEST FIGURES PRIOR TO DELIVERY OF ENGINE (21-5-28) o --- --- TEST BED FIGURES AFTER FLYING EXPERIMENTS (17-9-28) o ------ TEST BED FIGURES WHEN FITTED WITH LONG DURATION CAMS (18-9-28) BOOST PRESS "Hg A.B.S AIR BOX PRESS "Hg A.B.S B.H.P. ABS BOOST PRESSURE PLOTTED AGAINST BHP 2250 RPM 2500 RPM GROUND LEVEL 29.92"Hg AIR BOX PRESSURES ABS PLOTTED AGAINST BHP 2250 RPM 2500 RPM PRESS HEIGHT 10,000 FT PRESS HEIGHT 12,000 PRESS HEIGHT 15,000 FT yg eller | ||