THE fact that ring cowling is approved for use with the current series of Mercury and Pegasus engines appears a suitable occasion for a resumé of the important development work carried out by the Bristol Company in connection with the application of drag‐reducing cowlings to their engines and a programme of work which has included a long series of single cylinder experiments, wind tunnel research and full scale flight tests.
(1933), "Research on Low‐Drag Cowlings: An Account of Development Work Carried Out by the Bristol Company During the Past Ten Years", Aircraft Engineering and Aerospace Technology, Vol. 5 No. 9, pp. 209-216. https://doi.org/10.1108/eb029717
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