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Aviation History
1960
1960 - 1152.PDF
To pass the vital 'hush' test... Jet noise is no longer just a nuisance. It has become a major issue which the aircraft designer cannot afford to ignore. Failure to achieve a reasonable degree of silencing may mean the banning of a jet airliner from important airports or, at the very least, serious restrictions on its operation. Rolls-Royce Limited have produced effective silencers for both Avon and Conway engines, the principle being to break-up the ... Rolls-Royce use jet gas stream and encourage rapid mixing-in of air. Because these silencers run continuously at high temperatures and under severe stresses, they are made of the Wiggin nickel alloy Nimonic 8oA. Write for a free copy of our booklet 'Wiggin Nickel Alloys in Aircraft'. 'NIMONIC IS A REGISTERED TRADE MARK Fabricated from Nimonic 8oA sheet, this noise suppressor is for a Rolls-Royce Conway engine as used in certain versions of the Boeing JOJ airliner. HENRY WIGGIN AND COMPANY LIMITED • WIGGIN STREET • BIRMINGHAM 16 Used for the moving blades of every British gas turbi -now so/my #e# AtpA-tem/jera&tre
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