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).
Testing of an R.A.F. petrol flowmeter and the development of a new Venturi-type meter using a copper sulphate solution.
| Identifier | ExFiles\Box 37\2\ scan 121 | |
| Date | 28th November 1917 | |
| To R.{Sir Henry Royce} from EFC. c.c. to BJ. c.c. to By.{R.W. Bailey - Chief Engineer} c.c. to Da.{Bernard Day - Chassis Design} X.3180. EFC2/T28.11.17. RE METERS FOR THE MEASUREMENT OF PETROL FLOW. With reference to Mr. Bailey's memo EY14/P271117, last paragraph, Mr. Bailey has asked me to report to you on the matter of petrol flow meters. You will perhaps remember that we had an experimental R.A.F. petrol flowmeter on loan from the R.A.F. upon which we conducted a number of tests which we reported in two memos EFC/MP28916, and EFC2/ST241016. The results of these tests were not sufficiently satisfactory to enable us to consider this instrument as reliable when used in the petrol supply pipe of an engine. Of course it should be stated that the R.A.F. told us at the time that this meter was only in the experimental stage and it may be that they have considerably improved upon this by the present time. We ourselves are experimenting with a petrol flow meter of the Venturi principle with a view to standardising this for the test houses. The meter is exactly similar, though very much smaller, to the water flow meter already described, but instead of using mercury in the gauge tube we have found a solution of copper sulphate of density about 1.1 to give fairly satisfactory results, the line of separation between the petrol and the solution being very distinct. This particular type of meter has the advantage that the reading is proportional to the square of the flow and that therefore in the neighbourhood of the maximum flow capacity of the meter | ||