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 plotting vibration amplitude against excitation frequency for various aircraft components.
| Identifier | ExFiles\Box 86\4\ scan0221 | |
| Date | 25th November 1936 guessed | |
| RESEARCH LABORATORY AMPLITUDE D.{John DeLooze - Company Secretary} 56BN{W.O. Bentley / Mr Barrington} VIBRATION AT R.A.W? AMPLITUDE INCHES Y-AXIS LABELS: 0.6, 0.4, 0.2, 0 LEFT SIDE NOTES: WINGS WORST VIBRATION IN 3RD ORDER CASE DOTTED LINES SHOW VIBRATION ON ALLOY? CAMBER OF STANDARD WING LOWER WING FIN & RUDDER BOTTOM AXIS: EXCITATION FREQUENCY IN CTS{C. Trot Salt - Carburation} X-AXIS LABELS: 300, 400, 500, 600, 700 | ||