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).
Postponing the design of a variable pitch fan due to other important commitments.
| Identifier | ExFiles\Box 135\4\ scan0052 | |
| Date | 14th March 1940 | |
| 1135 file Jnr.{Charles L. Jenner} c. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} Rm.{William Robotham - Chief Engineer}7/ML.14.3.40. I think the design of the variable pitch fan will have to wait until we are clear of our other important commitments. Rm.{William Robotham - Chief Engineer} | ||