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Aviation History
1944
1944 - 2340.PDF
Advertisements. FLIGHT NOVEMBER I6TH, 1944 cp rffc& J4//^6? 44eeve-t>€zwe . . . <_yy&. 3. CONTROLLED TURBULENCE . . . This is one of a series of twelve advertise ments prepared for retention, and con stitutes a simple story of sleeve-valve advan tages. Previous copies are available on request to the Bristol- Aeroplane Company Ltd.,Bristol. /TIHE ports of a "Bristol" sleeve-valve engine are located "^ at the top of the sleeve and in the cylinder barrel; not within the surface of the cylinder head. In consequence, larger effective valve apertures are obtainable, and there is less restriction to gas flow. Furthermore, as each sleeve is positively driven and valve timing remains unaltered irrespective of engine speed, valve bounce is entirely eliminated. Better opening and closing diagrams are therefore possible on a " Bristol " sleeve-valve engine, turbulence is controlled, and a higher volumetric efficiency obtained. No wonder " Bristol " engines main tain their power. B tSy&iifMMs, «^!Wi/^ (ZsL&ica&zl, SLEEVE-VALVE ^ tried- /u04t&&t€<zizn<& ed&vewfa^d6& 4*tta4e 4&&ve-t><&/ve evvgxwe'
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