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).
Test procedures for the Kestrel IV.M.S. engine's circulating pump.
| Identifier | ExFiles\Box 179b\2\ img139 | |
| Date | 4th November 1932 guessed | |
| EXTRACT FROM :- Service Type Test Kestrel IV.M.S.No.907 Evaporatively Cooled. Engine Circulating pump. The functioning of this pump is of fundamental importance. It is considered the most conclusive results can only be realised by obtaining its calibration on the engine test installation, the rig tests being only subsidiary but cannot yet be abbreviated. The former tests are as follows:- Impose an average static suction head of plus 1 lbs.sq.inch. together with a restriction between separator and pump capable of reducing this head to - 1 lb.sq.inch. at 70°C at 2500 R.P.M. Impose delivery head as given by cylinder block pressure, with engine running at full throttle, i.e. record G.P.M. delivery. (a) At 3000 R.P.M. with plus 1 lb.sq.inch. suction pressure varying inlet temperature 75, 85, 95, & 99°C. (b) At 2500 R.P.M. do do (c) At 2250 " " do do (d) With throttle closed to slow running and A.C. at P.S. with suction head plus 1 lb.sq.inch vary inlet temperature as above and record G.P.M. delivery. (e) Repeat test (b) at 2500 R.P.M. full throttle, full strong with - 1 lb.sq.inch. at 75°C suction pressure normal R.P.M. (f) Repeat test (b) at 2500 R.P.M. with plus 1 lb.sq.inch. at 75°C suction pressure, but delivery pressure increased to plus 3 lbs.sq.inch. on engine outlet. (g) If (f) is satisfactory, as regards safety of engine with reduced water flow, repeat as (f) but with delivery pressure increased to plus 4 lbs.sq.inch on engine outlet. | ||