Hi,
Fameus Yakovlev constructed series of light airplanes - a small UT1 which was mostly acrobatic/sport machine and UT-2 trainer, which then was seriously improved into UT-2M (swept leading edge, new tail and modified fuselage with elevated second cabin).
About 50 UT-1 was impressed into army in 1942 in Crimea and Caucasus front and they were equiped with two ShKAS machine guns and 4 RS 82 rockets - it was named UT-1b.
My models are:
UT-1b - vacu (scratch modified) by Russian company Aviastend, Sgt. V.V.Prozor, unit: 46 ShAP, Black See Fleet, Caucasus, 1942
UT-2 - Polish injection model by Aga company, unit unknown
UT-2M - scratch conversion of UT-2 model by Aga, as far as I remeber Deblin Polish Aviation School in early 1945 (I have to check it)
The latest conversion was based on plans like that one, for example:
http://www.samolotypolskie.pl/samoloty/1368/126/Jakowlew-UT-22
BTW - there is a vacu of this version by Russian Aviastend, but I did not know it before I made model. Anyway the conversion was nice to do and I am happy with it. In all machines the engines are improved by my with camshaft elemets and exhaust pipes etc...
I hope you will enjoy them.
A family photo:
UT-1:
UT-2:
UT-2M
Regards
Jerzy-Wojtek