Yermolayev Yer-2 3D model is available on CGTrader for $89. Original author: chipbasschao. Specs: 60590 polys, 41394 verts.
STL (Stereolithography, filesize: 20.9 MB), OBJ (OBJ, filesize: 20.9 MB), 3DS (3D Studio, filesize: 20.9 MB), C4D (Cinema 4D, filesize: 20.9 MB), DAE (Collada, filesize: 20.9 MB), FBX (Autodesk FBX, filesize: 20.9 MB), LWO (Lightwave, filesize: 20.9 MB)