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).
Proposed electrical revolution indicator, its potential applications and limitations.
| Identifier | ExFiles\Box 165\4\ img211 | |
| Date | 20th July 1933 | |
| 81907. F.{Mr Friese} From Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.4/MA.20.7.33. ELECTRICAL REVOLUTION INDICATOR. Answering your F.4/JL.15.7.33., this invention appears very interesting and we intend to ask Mr.Fedden of the Bristol Co., on the occasion of his forthcoming visit what he thinks of the device. We regret that we have no immediate application for the instrument. We however query Mr.Birds remarks on Page 3 that a synchronous motor could be used as a distance recorder because such a motor would not maintain synchronism with rapid fluctuations in speed. Also on page 5 the device would not indicate stalling speed as the stalling speed if a function of the height and air density as well as the air speed. Hs{Lord Ernest Hives - Chair}/Wst. | ||