COMPOSITE wooden construction has long been the rule in Russia for a great variety of aircraft types: fabric and/or plywood skins on a metal and/or wooden framework are to be found in airframe components side by side with all‐steel or light‐alloy components. Some aircraft types are even of all‐wood construction.
Theiner, J. (1943), "Woods Used in Russian Aeroplanes: Results of a German Examination of the YAK‐1, MIG‐3 and LAGG‐3", Aircraft Engineering and Aerospace Technology, Vol. 15 No. 10, pp. 288-288. https://doi.org/10.1108/eb031061
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