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).
Table summarizing the operational lives and failure modes of six test fans.
Identifier | ExFiles\Box 135\1\ scan0247 | |
Date | 11th November 1938 guessed | |
- 8 - Summarised Table of Fan Lives. | First fan | 10 hrs. 27 mins. | + 3 hrs. approx exp. running. Burst | |-------------|-------------------|---------------------------------------| | Second fan | 5 " 36 " | Burst | | Third fan | 2 " 24 " | Returned intact | | Fourth fan | 8 " 12 " | Returned - all blades fractured | | Fifth fan | 24 " 7 " | Thicker blades Burst | | Sixth fan | 4 " 53 " | Returned - all blades fractured. | | ||