This aircraft paper model is a Kamov Ka-15 (NATO reporting name Hen), a Soviet two-seat utility helicopter with coaxial rotors, the papercraft is created by DI-3, and the scale is in 1:33.
The Kamov Ka-15 was a precursor to the Ka-18, fitted with the M-14 engine. It was primarily used for bush patrol, agricultural purposes and fishery control.
You can download the paper model template here: Kamov Ka-15 Helicopter Free Aircraft Paper Model Download [Box] [Gavitex]