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).
Graph of HP (Horsepower) versus Fan Speed (RPM) for two different fan configurations.

Identifier  Morton\M8\  img009
Date  20th November 1924 guessed
  
U1
H.P.-FAN SPEED CURVES
OF
VARIOUS FANS.
1. STD. 4% 6 BLADE FAN.
2. STD. 4% FAN WITH 3 BLADES REMOVED.
H.P.
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
R.P.M.
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
  
  


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