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).
Investigation into cracking of Phantom III fan blades and standardisation for the Phantom III & Wraith models.
| Identifier | ExFiles\Box 94\5\ scan0077 | |
| Date | 24th October 1938 | |
| 324. STO HoloRuysam To BY & Rm.{William Robotham - Chief Engineer} from RHC{R. H. Coverley - Production Engineer}/DWB.{D. W. Brown} c. Hs.{Lord Ernest Hives - Chair} c. Roy.{Sir Henry Royce} c. Hd.{Mr Hayward/Mr Huddy} RHC{R. H. Coverley - Production Engineer}/DWB.{D. W. Brown}2/MD. 24.10.38. FAN BLADES - P.III & WRAITH. We have investigated the cracking of P.III Fan Blades reported in Rm{William Robotham - Chief Engineer}/Std.10/MH.{M. Huckerby}20.9.38, and BY.13/G.3.10.38, and find that standardisation of Duralumin Blades with altered shape represents a cost increase of 1/3d per chassis and a tool cost of £4. 15. 0d. and can be introduced at 106 in 'D' by scrapping existing stock of P.III blades (E.85301 and E.89255) value £24. 5. 10d. It is not proposed to introduce Duralumin blades on the Wraith, but we understand that the shape has been altered involving a further tool cost of £4. 15. 0d. with no alteration to blade cost. It has been confirmed that the new blade can be conveniently introduced at 1st in 'C' Series when existing stock of blades will be absorbed. RHC{R. H. Coverley - Production Engineer}/DWB.{D. W. Brown} | ||