AEROPLANE DESIGN IN RUSSIA Available to Purchase

THE article by MR. J. H. STEVENS we publish this month on the machines in use by the Red Air Force is the third that has appeared in AIRCRAFT ENGINEERING on types of aeroplanes designed and built in Russia since the early days of the experiments of IGOR SIKORSKY. The three together constitute a history of aviation development in that country from 1911 down to the present day, such as has not appeared anywhere else. Only the first of the three, published in 1935, was obtained from a Russian source, the second, published in 1939 (also from the pen of MR. STEVENS) being based to some extent on information given in a French publication, while the present article is largely compiled from accounts that have appeared in the German journal Luftwissen, from which all the photographs, save one, are reproduced.