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).
Power and consumption curves comparing the FXII and Curtiss D12 aero engines at a 6/1 compression ratio.
| Identifier | ExFiles\Box 36\2\ scan 144 | |
| Date | 5th January 1928 | |
| POWER & CONSUMPTION CURVES FOR FXII AND CURTISS AERO ENGINES. COMPn RATIO OF EACH = 6/1. FXII 19. FULL THROTTLE CORRECTED N.T.P. CURTISS D12. FULL THROTTLE CORRECTED N.T.P. FXII 19 THROTTLED. (NOT CORRECTED) CURTISS D12. THROTTLED (NOT CORRECTED) B.H.P. SPECIFIC CONSUMPTION - THROTTLED CURVES TAKEN WITH MIXTURE FULL RICH. FULL THROTTLE TAKEN WITH WEAKEST MAINTAINED MIX. CURTISS D.12. THROTTLED. FULL THROTTLE CURTISS D12. F.XII No.19. THROTTLED. F.XII No.19. FULL THROTTLE. PTS/B.H.P./HOUR. ENG. R.P.M. ahs | ||