Rolls-Royce Archives
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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 recording performance data from two test ascents with different bonnet setups.

Identifier  ExFiles\Box 119\3\  scan0006
Date  4th October 1912 guessed
  
4th asct. closed bonnet plate on. 4 1/2 litrs. 16c 15c 24c 27c 31c 47c
5th asct. Without bonnet plate on No water lost. " temp. 90° 14c 11c 24c 22c 34c 34c
R
  
  


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