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).
Instructions regarding testing a 'Bleriot Phi' cut-out with extra auxiliary resistance.
| Identifier | ExFiles\Box 48\3\ Scan153 | |
| Date | 25th November 1920 | |
| RR 300 (120B) (SF 349 24-1-19) MP 200552 91496 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.A.C. F 25/11/20 Order No.: X 4215 Customer's No.: F.C. 167 Re: Bleriot Phi cut-out. This cut out has again been tested this time with extra resistance in the auxiliary resistance. The amount of extra resistance was the maximum which would allow the cut out to work without vibrating. i.e. 17.5 W. (Cont d) Signed This Sheet must be filed on completion of the work. | ||