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).
Investigating vibration caused by a metal airscrew on Condor III engines.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan83 | |
| Date | 8th August 1925 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} EXPERIMENTAL REPORT. COPIES TO: R.C.J B.J. WOR.{Arthur Wormald - General Works Manager} By E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} E.R. P.W.OY. R.A. Expl. No. 44639 REF. Hs{Lord Ernest Hives - Chair}6/L01 8.8.25. OBJECT OF TEST. To investigate vibration caused by Metal Airscrew on Condor lll. engines. TESTER. T.A. Gibson. CONDITIONS. HANGAR TEST. SUMMARY OF TEST. From the attached report it will be seen that the metal air-screw with the adjustable blades can be solely responsible for complaints of vibration and roughness. The metal air-screw supplied to us was such that if it was fitted up to the makers marks, the engine vibrated badly - it was however possible to adjust the blades so that the engine ran smoothly. Hs.{Lord Ernest Hives - Chair} | ||