Rocket Fuel Innovation: New Method Predicts Engine Performance

Researchers from the Perm National Research Polytechnic University (PNIPU) and NPO Iskra have developed a calculation methodology for rocket engines utilizing granulated fuel. The approach combines computer modeling with physical experiments using simulants to determine fuel mass, tank dimensions, and the required number of nozzles during the design phase. Unlike traditional solid-fuel engines, which burn continuously until exhaustion, granulated fuel systems allow for repeated starts and stops. This capability is intended for satellite maneuvering, debris avoidance, and soft landings on celestial bodies. The researchers aimed to reduce the financial risks associated with design errors in these controllable systems. The Method of Granulated Fuel Delivery The system functions by feeding solid fuel particles into the combustion chamber alongside a gas medium. This design attempts to merge the structural simplicity of solid-fuel engines with the thrust control typical of liquid-propellant systems. By interrupting the mixture feed, the engine can be deactivated and restarted.