Hi John,
this is a plane that I didn't know. I hope it preludes to a Rieman R-10. Do you know if these planes were related in some way?
Massimo
Hi Massimo!
According to Bill Gunston's "Osprey Encyclopedia of Russian Aircraft 1875-1995", the civil KhAI-1 was the first product of the Kharkov Aviation Institute (led by Josif Grigoryevich Nyeman), and was considered very advanced for its day (first flight October 1932). Apparently the designs of the KhAI bureau were not numbered consecutively, and the KhAI-5 was developed from the KhAI-1 in 1934 as a military version. The KhAI-5 was put into production as the
R-10; from 1936 to 1940, a total of 528 aircraft including prototypes was built at three different plants (GAZ 43, GAZ 292, and Kharkov). So, in answer to the question, the KhAI-1 and the R-10 were directly related, according to Gunston. For example, judging from the general arrangement drawings in his book, the shapes of the wings and horizontal tailplanes were the same. I hope this helps!
There was a kit of the R-10 by Pavla, by the way, although this was one of their earliest kits.
John