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Aviation History
1949
1949 - 0381.PDF
MARCH 3RD, 1949 FLIGHT Advertisements I* 21 S t 1 II £ • • • the above illustration shows a casting being formed for a magnesium supercharger casing for a Hercules 763 engine destined for Hermes IV aircraft. When cast, the casing weighs 240 lb., subsequently to be reduced by machining operations to a finished component weight of go Ib. During casting, a sample "pour" is given physical tests and analysis ; x-ray tests are carried out on every casting to check internal structure ; pressure tests and inspec- tion after each machining operation further ensure that each component is as perfect as modern manufacturing methods can make it . . . ^Hj "Bristol" sleeve-valve reliability is inherent. THE BRISTOL AEROPLANE COMPANY LIMITED ENGLAND
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