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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).
Outlining rig test requirements for remote-driven, oil-driven, and air-driven petrol and hot-well pumps for aeroplanes.

Identifier  ExFiles\Box 61\3\  scan0173
Date  31th March 1931
  
X40384.

Hs.{Lord Ernest Hives - Chair} (2 copies)
C. R.{Sir Henry Royce} Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager}
C. R.{Sir Henry Royce} Dy.{F R Danby} Lr.{Mr Ellor}
C. Mr. Jaques.
******************

Rg{Mr Rowledge}/Tanl/DR.31.3.31.
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Remote-Driven Petrol and Hot-Well
Pumps for Aeroplanes.
******************

In addition to Ir's injector pump for mounting in petrol tanks to avoid a suction lift, which we wish to develop, we should like you also to do some rig tests on the following schemes:

Oil Driven Petrol Pump.

Here we intend to use the petrol pump on the engine to pump oil to one of two co-axial gear pumps mounted below the tank, of which one is motored by the oil and the other pumps the petrol. The oil used should be thin, like spindle oil, and a separate reservoir will be needed. The pump to be motored by oil should have the groove cut to give easy starting, as shown in Hs{Lord Ernest Hives - Chair}/Der3/MJ.20.3.31.

Tests should consist of throttling the delivery of the pump pumping petrol, and plotting curves of quantity against speed of the engine-driven pump, at delivery pressures corresponding to heads of 5, 10 and 15 ft. We should also like to know the corresponding pressures in the oil pipe, and whether the oil heats seriously on a long run at a high head. We also want to investigate the reliability of starting of the oil motor pump, particularly when there actually is a head of petrol on the petrol pump, and what pressure is developed if the pump does not start.

Claudel Hobson Air-Driven Petrol Pump.

We attach the drawings with regard to the above, which we also want tested on the compressed air mains. We believe it is supposed to work best at about 40 lbs/sq", but Claudels say they have run it at about 120 lbs/sq" with a 1.5 m.m. dia. restriction washer in the air pipe to avoid racing if there is no petrol present. It would appear that with the 75 lbs/sq" pressure in our mains we should use a 2 m.m. or so restriction washer.

cont'd.{John DeLooze - Company Secretary}
  
  


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