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).
Graph showing the variation of boiling point, air temperature, and relative air density with altitude.
| Identifier | ExFiles\Box 16\2\ Scan096 | |
| Date | 24th September 1934 guessed | |
| VARIATION OF BOILING POINT AIR TEMP: AND RELATIVE AIR DENSITY WITH ALTITUDE BOILING POINT OF WATER. °C AIR TEMP: RELATIVE DENSITY ALTITUDE IN FT: ALTITUDE IN FEET RELATIVE AIR DENSITY AIR TEMP | ||