The works are conducted in new direction of rocket engine-building-development of engines on paste-like propellant (non-hardened solid propellant) with its pressure feeding into combustion chamber. The rocket engine on paste-like propellant is in the phase of test development. The engine on paste-like propellant is conceptually an updated solid propellant motor with new capabilities of deep regulation and multiple ignitions while preserving major advantages of SRM and borrowing from SRM some elements of design, materials, solid propellant components, and technologies.

The engines have unique capabilities of deep thrust regulation (in an experiment 80 - times regulation was realized) and multiple ignition.
The engines on paste-like propellant, while solving a number of tasks, have mass-dimensional advantages when used in reaction control systems over the other types of engines. The use of engines on paste-like propellant as main engines for launch vehicles will allow to increase their effectiveness by optimizing the trajectory of payload injection by engine throttling during the whole flight.
The use of promptly and deeply regulated engine on paste-like propellant with multiple ignition as an acceleration engine, an engine for soft landing on the surface of space objects and as actuators of reaction control system, while solving a number of tasks, will improve mass-dimensional characteristics of spacecraft.

The use of these new types of engines as regulated main engines and as control system engines of launch vehicles and spacecraft will allow to increase their power efficiency. Completion of the development of the engine on paste-like propellant will allow to enter the market of space hardware and commercial services with a new class of rocket engines allowing to increase the effectiveness of payload injection by light and medium - class launch vehicles. Yuzhnoye SDO found new technical solutions on initial and multiple ignitions, combustion of paste-like propellant, regulation of propellant consumption, prevention of flame from coming from the combustion chamber into the feeding system et al, which effectiveness was confirmed by numerous firing tests of experimental and pilot engines on paste-like propellant. All this is a unique scientific-technical experience that together with Yuzhnoye is experience in developing solid propellant and liquid propellant engines allows to develop the engines on paste-like propellant of different purposes.