A High‐Power Two‐Cycle Sleeve‐Valve Engine for Aircraft: A Description of the Development of the Two‐Cycle Petrol‐Injection Research Units Built and Tested in the Laboratory of Messrs Ricardo & Co. Ltd. Available to Purchase

OVER a period extending from just prior to the outbreak of war until a year or so after D‐day, a continuous programme of single‐cylinder research was carried out by Messrs Ricardo & Co. Ltd., for the M.A.P.—now M.O.S.(A)—on the two‐cycle petrol‐injection sleeve valve engine. The account which follows is intended to give a description of this programme and of its results, but since the decision which brought it into existence was considerably influenced by preceding events, the sequence of these events is related briefly in order to present as complete a picture as possible.