Request to manufacture a set of Wraith fan blades from specific material for testing on a Phantom III fan flange.
| Identifier | ExFiles\Box 112\2\ scan0125 | |
| Date | 9th December 1936 | |
| O 805-8 24 To HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /Std. Rm {William Robotham - Chief Engineer} /Std.13/MH. {M. Huckerby} 9.12.36. B.50 FAN - STEEL BLADES. Will you please make a set of Wraith fan blades to latest drawing EW.2070, except that they should be made in 18 SWG. S/MD.239.A. material - possibly these could be made from B.II fan blades EB.1566. Will you then please fit these to a P.III fan flange which we will hand to you, using S/DS rivets, so that we can test same on Messrs. Ferodo's test rig. Rm {William Robotham - Chief Engineer} /Std. | ||
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).