ASK21 Heli Tow

Insipred by airshow display, which has been performed by Mi-4 helicopter and LF-107 Lunak glider in 1958, we decided to re-create this in X-PLane 10.
As you can see, it works surprisingly well.
For pictures of original performance, please look at http://www.vrtulnik.cz/mil/aerovlek.htm (in Czech only).