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 showing pressure in the Phantom II cooling system against engine RPM with different nozzle and valve configurations.

Identifier  ExFiles\Box 15\1\  Scan203
Date  22th January 1930
  
PHANTOM II COOLING SYSTEM
PRESSURE IN WATER JACKETS AND RUBBER JOINTS DUE TO RESTRICTED DELIVERY NOZZLE AND RESTRICTION VALVE IN TOP WATER PIPE TO LE C 2675.
THE RESTRICTED DELIVERY NOZZLE HAS REDUCED SLOTS .250 WIDE .625 LONG.
PRESSURE IN WATER SYSTEM (LBS/SQ IN)
ENGINE R.P.M.
LEGEND:
RESTRICTED DELIVERY NOZZLE
RESTRICTION VALVE (LE C 2673) CLOSED
" " " OPEN
2.
STAMP: ROLLS-ROYCE JAN 22 1930 DERBY
  
  


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