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Aviation History
1950
1950 - 1114.PDF
JUNE 1950 Contributing to sleeve-valve fuel economy HERCULES 763 POWER PLANT IN HERMES 4- ^Bristol" ioer drag power plants A low specific fuel consumption is of little benefit, if a large proportion of the power output of the engine is wasted in excessive power plant cooling or external drag. "Bristol" have pioneered the design and manufacture of low drag power plants. The drag achieved with the latest Hercules power plants is so low, that if, on a typical four-engined airliner, they were replaced by perfectly smooth and streamlined nacelles of the minimum dimensions necessary to house the retractable undercarriage, the drag of the whole aircraft would be reduced by only 2%. "Iiris<of" low fuel consumption sleeve-valve engines THE BRISTOL AEROPLANE COMPANY LIMITED
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