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 for two-piece cylinders in Kestrel engine production.
| Identifier | ExFiles\Box 179b\3\ img303 | |
| Date | 8th March 1933 | |
| To R.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Yng. c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. to Rg.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} Lr.{Mr Ellor} c. to KP. S.D. Hs{Lord Ernest Hives - Chair}/Yng.3/MJ.8.3.33. K2465 X3866 WATER FLOW TESTS ON TWO-PIECE CYLINDERS. Consideration has been given to the adoption of two-piece cylinders for Kestrel production. The question of water flow was raised by R.D.E.2.b. as the report on Kestrel 11 MS.605 Type Test (June 1932) gave a figure of 76 galls/min. for flow through the two-piece cylinders when using the water pump to LOP.E.34984 since this flow was below the minimum requirement to AP.1208 Schedule. Some doubt as to the accuracy of the Type Test figure was caused by a flow curve (F.324) in Development Report No.5 - Contract 165757/32, which shewed a flow of 111 galls/min. through the two-piece cylinders when using the evaporatively cooled type of water pump to LOP.E.37267 in conjunction with the blocks in the water cooled form. Tests were put in hand to clear the points of contention and in addition to carry out the necessary flow tests to cover the blocks for evaporative cooling, in conjunction with the latest type of water pump for evaporatively cooled running i.e., LOP. E.38201. Curves 391F. and 392F. give the flows under water cooled conditions and shew that at 2250 R.P.M. the flow is 84 galls/min. Curve 390F. gives the flows under evaporatively cooled conditions with the complete system in the evaporatively cooled form. A flow reading taken under A.P.1208 conditions using the evaporatively cooled type of water pump (LOP.E.38201) in conjunction with the blocks as for water cooling i.e. having no inlet restrictions, gave 108 galls/min. at 2250 R.P.M. which checks up well with the figure of 111 galls./min. under the same conditions but using the water pump to LOP.E.37267. To sum up briefly :- (1) For existing production the two piece cylinder blocks fulfil A.M. requirements using the present standard water pump. | ||