I cannot read Russian unfortunately, but I think, that book is about "Helicopters,
Gyrodyne and Convertiplanes". That doesn't mean, that this design on the cover
is said to be a Gyrodyne. It obviously is a tailsitter, similar in concept to the Hafner
Vertical Attitude Aircraft (http://www.secretprojects.co.uk/forum/index.php/topic,17535.msg224750.html#msg224750),
I think.
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