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).
Diagram of typical wave forms for Vulture engine ignition and distributor vibration.
| Identifier | ExFiles\Box 142\1\ scan0281 | |
| Date | 31th October 1938 | |
| TYPICAL WAVE FORMS VULTURE IGNITION V.M.2 APPROX. VERTICAL SCALE 100/1 CURVE A 5TH ORDER ONLY PURE SINE WAVE 1 REV CURVE B 1ST ORDER AND 6TH ORDER. EQUAL AMPLITUDES (VULTURE II N.o 2 VERTICAL VIBRATION OF DISTRIBUTOR) 1 REV CURVE C 5TH ORDER MODULATED (VULTURE II N.o 2 TRANSVERSE VIBRATION OF DISTRIBUTOR) 1 REV CURVE D COMPLEX 2ND ORDER VIBRATION (LATERAL VIBRATION ON A DISTRIBUTOR L.C. EXE. STAR. UNIT.) 2 REVS SGL 31.10.38. | ||