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).
Concluding page of a letter discussing the influence of gear ratio on the airscrew.
| Identifier | ExFiles\Box 63\4\ scan0096 | |
| Date | 16th December 1929 guessed | |
| 3. The gear ratio provides a means for locating the criticals but the influence of the gearing is small if the connection between it and the airscrew is relatively rigid, since the node lies in this region. Yours Sincerely, B C Carter. WS. AEC | ||