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).
Table of discharge coefficients for vertical petrol nozzles under three different head pressures.
| Identifier | ExFiles\Box 36\1\ scan 053 | |
| Date | 15th May 1916 | |
| PETROL VERTICAL COEFFICIENTS OF DISCHARGE Nozzle. Head 1. Head 2. Head 3. A 1 .879 .909 .938 A 2 .842 .876 .896 A 3 .786 .793 .811 A 4 .728 .742 .740 B 1 .897 .907 .961 B 2 .872 .889 .940 B 3 .828 .867 .910 B 4 .795 .845 .881 C 1 .845 .892 .938 C 2 .835 .873 .953 C 3 .824 .855 .928 C 4 .815 .839 .922 D 1 .898 .904 .910 D 2 .888 .896 .890 D 3 .878 .888 .873 D 4 .861 .880 .852 R.R. A 276 (400 T.) (S.) C. 530. 15-5-16 C. 1546. | ||