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).
Standardisation of a reinforcing plate for fan blades to prevent them from breaking due to fatigue.
| Identifier | ExFiles\Box 171\3\ img109 | |
| Date | 2nd November 1921 | |
| R R 766 (S H) (S H 268. 19-9-20) G 8/64 COMPLETED 8.2.22 STANDARDISATION of CHASSIS PARTS. Description of Parts. Reinforcing Plate to Fan Blade. Origin. To avoid fan blades breaking. Experimental Test Report. There have been a number of failures of fan blades on customers cars. The fractures show fatigue. The new scheme is a reinforcing plate of aluminium. This can be applied quickly. We consider this alteration essential when smaller fan pulley is used. Road Test Report. Fitted to 4.EX Car - run 300 miles. Signature of Exp. Dept. that above is correct. K.{Mr Kilner} Livesy Weight of Old Part. Cost of Old Part. £ Nil. Weight of New Part. Cost of New Part. £ 0. 5. 9¼ Difference per Car. Difference per Car. £ 0. 5. 9¼ Date 2.11.21. X No. 3438 Drawing No. E20814/5 Part List A Scrap and replace at all costs, including Chassis already delivered to customers. B Scrap and replace on Chassis in works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on :- Series..........£.......... Series..........£.......... Series..........£.......... Storekeeper advised re above : Storekeeper's Signature. Signature of Mr. De LOOZE that above is correct. D/Rd 30.11.21 SIGNATURES | DATE | REMARKS Mr. JOHNSON | 10.1.21 | Agreed. C. Johnson. Mr. JOHNSON | 10.1.21 | Agreed. BJ. No stock to be scrapped. Mr. ROYCE | 6.2.22 | Agreed FHR. do not know much of this commit. agree & continued make use possibly thicker blades or steel blades used? Mr. WORMALD | 2.12.21 | Agreed. Wor.{Arthur Wormald - General Works Manager} Have been less expensive & better improvement. Mr. BARRINGTON | 16.11.21 | Agreed. Rg.{Mr Rowledge} Mr. DAY | 4.11.21 | Agreed. Da.{Bernard Day - Chassis Design} Mr. BAILEY | 3.11.21 | Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD | 2.11.21 | Agreed. EP{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY | 22.12.21 | Agreed. FN. | ||