TU144LL (Letayuschaya Laboratoriya) powered by four Kuznetsov NK-321 turbofan engines Aircraft was operated by IBP Aerospace, Tupolev, NASA, Rockwell and later Boeing as a testbed for the 'High Speed Commercial Research program' to develope a new supersonic passenger aircraft. Optimized for gameplay and simulations. The aircraft is complete animated. The model also has a cockpit and modeled cabin if you need to have the doors opened. Three textured materials with diffusemaps up to 2048x2048 pixels. The model was already released by me as freeware for FSX if you want to check out its possible performance. Depending on your countrys laws, Extended use may require additional licenses.