More affordable and economically justified development of all new technologies. Forming of an initial set of testing facilities, tools and equipment. Experimentation of printed 3D liquid-fueled engine with traction of 500 kgf. Use of safe noncryogenic fuel components: hydrogen peroxide and aviation kerosene. Testing of jet tail-down landing.
All these facts will help to create the technological start for further development and launching of single-stage orbital rocket.