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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).
Preliminary investigation into using an evaporatively cooled Phantom II engine as a power unit in tanks.

Identifier  ExFiles\Box 25\1\  Scan003
Date  31th October 1929
  
+7900
To F.{Mr Friese} from Lr.{Mr Ellor}
C. R.{Sir Henry Royce}
C. SMS.
C. MS. W.T.
C. HS.{Lord Ernest Hives - Chair} W. E.{Mr Elliott - Chief Engineer}

LFl/AMB.31.10.29.

EVAPORATIVELY COOLED PHANTOM II ENGINE
AS A POWER UNIT IN 'TANKS'

With reference to F's memos 5.10.29 and 24.10.29, in connection with the above subject, I have made a preliminary investigation into the above scheme and would suggest something on the lines outlined in this note. The actual arrangement of the cooling plant depends upon the shape of the tank and other requirements not known by us at the moment.

The attached diagramatic arrangement is based upon the preliminary investigation and is intended as a guide from a talking point of view.

General Peck's queries as to the sizes of condenser and steam pipe may be answered tentatively as follows :-

Min. Frontal area of condenser, 1.25 sq. ft.
Dia. of steam and water pipe from engine 1 1/2 ins.

Preliminary calculations.

Date.

All the cooling air must be induced to flow through the condenser tubes by an engine driven fan. The cooling plant must be of minimum bulk, the inlet and outlet of the cooling air being masked.
  
  


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