This book surveys all the Soviet/Russian aircraft that either remained 'paper projects' (the work progressed no further than the design documents or even merely a design proposal) or were abandoned at the prototype construction stage.
Over many years the authors have unearthed a mass of unpublished material on these aircraft projects. These include such aircraft as the Isayev/Shevchenko 'bi-monoplane' fighters with retractable lower wings developed...
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