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).
List of suggestions and experimental data derivations for preventing fuel spillage and improving a fuel tank system.
| Identifier | ExFiles\Box 19\4\ Scan042 | |
| Date | 16th June 1930 | |
| -2- fitted into its frame and then the whole entered from the front of the board, which is undesirable. The pipe joint should be fitted with stamped lead seals and with labels marked "this instrument must be kept in a vertical position". (6) To prevent spilling by being inverted or due to pressure (abnormal in the tank), we suggest that it might be possible to have a ball valve at the head of the gauge glass and at the outlet of the balance pipe. (7) A similar valve might be fitted in the back leg just above the surface of the liquid, this valve to close the pressure line when the instrument is inverted, so avoiding the spilling of liquid into the pressure line. This latter valve is not so essential, as the twisted pipe acts very similar to a valve in this respect. (8) We suggest that the tank unit be moved to within 1.5" of the tank baffle to ensure the effective working of the Sprengle pump. (9) The tank fitting should be that shewn on N.sch.3028. (10) We think that as soon as we have perfected the K.S. gauge it should be included in our framed instrument patch, a design for which you already have. --- All the above suggestions are illustrated in fig.1. and are applicable to the existing system. We would like experimental data on the following suggestions which have been derived from Cy3/DM{D. Munro}19.5130. (1) We suggest that a tank be constructed having the filler cut off level with the top of the petrol tank and with the filler cap made gastight. The vent on the filler should not be fitted but to do its work a central vent be fitted after the style of the one used by RRAB. It is suggested that on tilting the tank when full the petrol will not spill although the level may rise above the top of the vent owing to the fact that the volume of the imprisoned air is so small that little or no cavitation can take place. When the volume of air is large then the liquid can never rise to the height of the top of the vent. | ||