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 engine amplitude in degrees against engine RPM for different spring drive and damper configurations.
Identifier | ExFiles\Box 132\1\ scan0139 | |
Date | 22th April 1939 | |
B 60 WITH WRAITH SPRING DRIVE SET AT 15 LBS AT 17 1/2" WRAITH III WITH WRAITH SPRING DRIVE SET AT 15 LBS AT 17 1/2" B 60 WITH B 60 DAMPER SET AT 219 LBS FT/DEGREE AMPLITUDE DEGREES. ENGINE R.P.M. JRS. 22.4.39. | ||