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).
Chart recording engine detonation test results with corresponding waveform data.
| Identifier | ExFiles\Box 101\2\ scan0143 | |
| Date | 28th June 1938 | |
| Table Headers: S.40 MPH, S.70 MPH, MAX SPEED., DETONATIONS FADE OUT, INTENSITY OF DETONATIONS. Row 1: STD GOVERNOR, TURB HEAD, 15.8", 95.6", 79.7", 17", MEDIUM LOUD. Row 2: DETURB HEAD, 16.2", 95.35", 76.75", 14", MEDIUM LOUD. Row 3: SPECIAL GOVERNOR, TURB HEAD, 15.8", 96.3", 79.5", 11", MEDIUM LOUD. Row 4: I. WALLER., DETURB HEAD, 17.5", 95.15", 75.5", 11", MEDIUM LOUD. Row 5: SPECIAL GOVERNOR, TURB HEAD, 16.6", 96.8", 75.0", 13", MEDIUM LOUD. Row 6: H.F. HAMILTON., DETURB HEAD, 15.65", 92.35", 77.0", 14", MEDIUM LOUD. Vertical text (left): 15° ADV BTDC Vertical text (right): ROUGHNESS FROM SPLINTER Vertical text (right, top): 1089 / 28.6.38 | ||