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).
Water flow tests and full throttle power data for a Kestrel III engine with alternative ignition settings.
| Identifier | ExFiles\Box 179b\2\ img137 | |
| Date | 19th November 1932 | |
| -4- Ha/Yng.2/M.J.19.11.32.Cont'd.{John DeLooze - Company Secretary} In addition a slow running circulation check was made at the specified conditions of a resistance measured at the engine outlet equivalent to 2 ft. above the effective head of water at inlet. The minimum speed at which the pump would circulate water under these conditions was 480 R.P.M. Water Flow - (2) To Type Test Schedule (S.C.Engines). Flow tests in accordance with the Type Test schedule (appended) are given on Curve 353 F.{Mr Friese} The respective normal operating speeds flows are above those of the standard steam cooled engine - See Curve 205 F.{Mr Friese} The curves show, however, that as the speed rises the flows fall more rapidly as the temperature is increased. (B) KESTREL III M.S.607. The following table gives the full throttle power mag. drop and detonation for the alternative ignition setting for M.S. engines. TABLE DATA: SECTION 1: 40°+1 BTC. FA. FT. BHP | RPM. DROP (A ON) | RPM. DROP (B ON) | DETN F (A SIDE) | DETN F (B SIDE) ---------------------------------------------------------------------------------- At 2250 R.P.M.: 598 | 10 | 10 | 2 FT. | 6 FT. At 2500 R.P.M.: 664 | 20 | 20 | 1 FT. | 2 FT. SECTION 2: 36°+1 BTC. F.A. FT. BHP | RPM. DROP (A ON) | RPM. DROP (B ON) | DETN F (A SIDE) | DETN F (B SIDE) ---------------------------------------------------------------------------------- At 2250 R.P.M.: 603 | 40 | 40 | 2 FT. | 5 FT. At 2500 R.P.M.: 669 | 50 | 50 | 1 FT. | 2 FT. A.P. 1208 regulations are that the drop in R.P.M. shall not exceed 5% of normal. Both timings fulfil this condition. | ||