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).
Engine cooling issues due to boiling and steam pockets, with proposed solutions involving new cylinder head designs.
| Identifier | ExFiles\Box 179\3\ img107 | |
| Date | 31th January 1932 | |
| -2- Ha/Lox.1/WJ.31.1.32. Cont'd.{John DeLooze - Company Secretary} frequently run boiling inadvertently due to the pilot forgetting his radiator shutters or loss of water during aerobatics, and under these conditions we think trouble would be likely to occur. Our thermo couple tests on the Std. cylinder block have shewn the necessity of avoiding steam pockets and to fulfil this under evaporatively cooled conditions it was found necessary to use on the Std. cylinders a larger water pump, larger water pipes, and an additional outlet at the centre of the cylinder block. Designs are in hand for the new two piece head with improved water-ways and we consider it will be necessary to at least equal the standard evaporatively cooled system as used on Kestrel 39 Type Test - with regards freedom from steam pockets - to ensure reliability under the conditions encountered in the R.A.F. Ha/A.C.Lovesey. | ||