Data sheet documenting acceleration test results for a low compression head.
| Identifier | ExFiles\Box 11\3\ 03-page505 | |
| Date | 11th August 1931 | |
| 25-MX. {John H Maddocks - Chief Proving Officer} 11/8/31. ACCELERATION TESTS. LOW COMPRESSION HEAD. | M.P.H. | IN. Secs. | OUT. Secs. | AVERAGE. | |---|---|---|---| | 10 - 20 | 4.2 4.8 | 4.2 4.9 | 4.5 | | 10 - 30 | 9.0 9.0 | 8.5 8.0 | 8.6 | | 10 - 40 | 14.0 12.6 | 14.5 12.9 | 13.5 | | 10 - 50 | 18.75 17.5 | 19.2 19.7 | 18.8 | | 10 - 60 | 27.7 26.25 | 28.4 26.4 | 26.7 | | 10 - 70 | 38.1 37.2 | 36.9 35.9 | 37.3 | | 10 - 80 | 69.25 67.4 | 66.0 62.0 | 66.2 | Wind 15 M.P.H. across in front. Roads dry. Air Temp. 18°C. Pilots, Mer. Load. | M.P.H. | IN Secs. | OUT. Secs. | AVERAGE. | |---|---|---|---| | 20 - 30 | 4.5 | 4.3 | 4.4 | | 30 - 40 | 4.3 | 5.4 | 4.8 | | 40 - 50 | 4.8 | 5.7 | 5.3 | | 50 - 60 | 8.9 | 7.0 | 8.0 | | 60 - 70 | 10.7 | 10.5 | 10.6 | | 70 - 80 | 30.6 | 27.0 | 28.8 | [Signature] C.A.H.H. | ||
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).