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 detailing flight consumption tests on a 3F Kestrel 'S' engine at 2000 RPM.
| Identifier | ExFiles\Box 179b\2\ img020 | |
| Date | 19th May 1931 | |
| FLIGHT CONSUMPTION TESTS ON 3F KESTREL 'S' ENGINE. AMOUNT ON A.C. NECESSARY TO GIVE MOST ECONOMICAL CONSUMPTION CRUISING AT 2000 R.P.M. LEVEL FLIGHT. FUEL CON. LBS/HR. MOVT A.C. DEGREES ALT. FT. BOOST LBS/SQ" APPROX. WEAKEST MTD. CONSUMPTION CON AFTER DROPPING 50 RPM & RESTORING WITH THROTTLE BOOST TO RESTORE TO 2000 RPM i.e. RESTORE 50 R.P.M. INITIAL BOOST AT 2000 R.P.M. POSN A.C. FOR DROP OF 50 R.P.M. APPROX. WEAKEST MAINTAINED POSN OF A.C. ACL K.E.7 / 19.5.31 | ||