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).
Wind tunnel work, Viscon oil cooler development, and improvements to radiator core efficiency.
| Identifier | ExFiles\Box 149a\3\ scan0098 | |
| Date | 6th February 1934 | |
| -2- HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}4/KW.6.2.34. They have decided that they cannot do wind tunnel work with anything but D.C., and have therefore installed a 600 H.P. D.C. generator. The dynamometer set-up has a 120 H.P. motor. They spent £50,000 on the development of the Viscon Oil Cooler alone. Naturally such a scale of research work is only made possible by the volume of production. They are making over 4,000 Chevrolet radiators a day. On this production saving a cent per radiator represents 10,000 dollars a year. RADIATOR CORES. The radiator matrices that Marstons are now producing for us to-day are 20% less efficient than the existing standard Harrison core. The core is of the same type, but the efficiency has been stepped up in two ways: (1) Instead of dents in the indirect cooling strips they now put louvres. These are more effective in dissipating the stagnant layer of air than the dents, increasing the efficiency 10%. We should be able to get Marstons to modify their tools to produce this alteration. (2) They have increased the density of the matrix from 8 indirect fins /1" to 10 fins/1", i.e. - Old Matrix 40 25 New Matrix 55 20 This improves matters a further 10%. | ||