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 altitude power curves for a KES IV blower on a standard Kestrel engine with suggested type test ratings.
| Identifier | ExFiles\Box 179b\2\ img083 | |
| Date | 11th January 1932 | |
| 340 F ALTITUDE POWER CURVES OF KES IV BLOWER ON STD KESTREL ENGINE AT SUGGESTED TYPE TEST RATINGS SUGGESTED TYPE TEST RATINGS:- NORMAL R.P.M. 2500 MAX R.P.M. 3000 RATED ALTITUDE AT NORMAL R.P.M. 11000 FT RATED BOOST PRESS +1.25 LBS/SQ " POWER (NORMAL) AT RATED ALT. 590 MAX POWER (AT 15000 FT) = 640 H.P GROUND LEVEL POWER 525 B.H.P AT 2500 R.P.M ENDURANCE POWER FOR T.T. = 475. B.H.P. MAX PERMISS. BOOST FOR TAKE OFF 3 LBS/SQ " TAKE OFF R.P.M. 2200 (APPROX). POWER AT TAKE OFF 550 B.H.P. DETONATION AT TAKE OFF BOOST AND 2200 R.P.M. = 8 F.T. Graph Text: TAKE OFF POWER AT 3 LBS/SQ" BOOST 2200 R.P.M. 3000 R.P.M. + 1.25 LBS BOOST 2500 RPM + 1.25 LBS BOOST 2200 RPM + 1.25 LBS BOOST 3000 R.P.M. BOUNDARY LINE 2500 R.P.M. BOUNDARY LINE 2200 R.P.M. Blower Curves 8823/1. Axes Labels: Vertical Axis (Y): B.H.P. Horizontal Axis (X): ALTITUDE FT. | ||