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).
Continued note on atmospheric temperature correction during power tests, with a comparative data table.
| Identifier | ExFiles\Box 37\3\ scan 114 | |
| Date | 3rd September 1917 guessed | |
| Contd. -2- number of degrees by which the atmospheric temperature observed during the power test exceeds 16°C. (If atm. temp. is less than 16°C. t is negative). An example of the application of this correction is given. The magnitude of our correction is less than that given on the chart, the extreme comparative figures being according to the following table:- Temp. Pressure. A.I.D. Correction. Modified Correction. -5 31.0 -10.5% -8.1% 25 28.0 +10.1% +8.7% We are making a chart similar to the one herewith but showing the modified correction & this can be issued if desired. EFC. | ||