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 of torsiograph results for engine B 80 unit No. 2, operating without a damper.
Identifier | ExFiles\Box 132\1\ scan0130 | |
Date | 22th April 1939 guessed | |
SUMMERS TORSIOGRAPH RESULTS ON ENGINE B 80 UNIT Nº 2 WITHOUT DAMPER AMPLITUDE DEGREES 10½ 9½ 8 6½ 5½ 4½ 4 3½ ENGINE R.P.M. FIG. 1 RM{William Robotham - Chief Engineer}/JRS | ||