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).
Request to build a second 20/25 HP flexible blade fan to compare different steel blade thicknesses.
| Identifier | ExFiles\Box 104\3\ scan0226 | |
| Date | 3rd April 1936 | |
| x524 To RHC.{R. H. Coverley - Production Engineer} HS{Lord Ernest Hives - Chair}/Std.1/JH. 3.4.36. 20/25 HP. Flexible Blade Fans. We should like you to build up the second flexible blade 20/25 fan which you are completing with blades of steel .012" thick, some of the material which has been ordered for the Phantom III flexible fans can be used for these blades. We shall then be able to get comparisons between .010 and .012" blades. HS{Lord Ernest Hives - Chair}/Std. | ||