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 of A.S.T.M. & Series 30 ratings for Isopropyl Ether and Iso-Octane blends in aviation gasoline.
| Identifier | ExFiles\Box 150\1\ scan0225 | |
| Date | 30th January 1936 guessed | |
| FIG. 7. A.S.T.M. & SERIES 30 @ 375°F. {Mr Friese} RATINGS OF CLEAR & LEADED BLENDS OF ISOPROPYL ETHER & ISO OCTANE BLENDS IN AVIATION GASOLINE. OCTANE NUMBER % BLENDING AGENT IN AVIATION GASOLINE. ASTM WITH 3cc PbEt4 ASTM WITH 1cc PbEt4 A.S.T.M. CLEAR SERIES 30 @ 375°F CLEAR LEGEND ISOPROPYL ETHER BLENDS ISO-OCTANE BLENDS | ||