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 showing consumption tests for a Fairey Postal engine (F.12-45) used in a DH.9 machine.
| Identifier | ExFiles\Box 36\2\ scan 177 | |
| Date | 17th August 1928 | |
| CONSUMPTION TESTS FOR FAIREY POSTAL ENGINE TESTS TAKEN ON F.12-45 - THE ENGINE USED IN THE DH.{D. Henderson - Showroom}9 MACHINE Y-AXIS LEFT: CONSUMPTION LBS/B.H.P/HOUR X-AXIS: B.H.P. Y-AXIS RIGHT: R.P.M. ENGINE CURVE LABELS: R.P.M. R.P.M. FULL THROTTLE TEXT BOXES: SPECIFIC CONSUMPTION AT THE REQUIRED HP & RPM TAKEN AT GROUND LEVEL - IR. TEST BED RESULTS THIS CURVE IS THE ESTIMATED SPECIFIC CONSUMPTION AT THE GIVEN ALTITUDE. IT WAS OBTAINED FROM THE UPPER CURVE BY CORRECTING FOR THE ATMOSPHERIC BACK PRESSURE. THROTTLED SWAN SPIRIT USED FOR ALL THROTTLED TESTS. S.G. = .690. SPECIFIC CONSUMPTION USING 50/50 BENZOL - AVIATION FUEL S.G = .816. SPECIFIC CONSUMPTION USING T.E.L. FUEL. S.G.= .732. FULL THROTTLE STAMP: DRAWING OFFICE ISSUE ROOM 20 AUG 1928 DERBY | ||