MULTISTAGE ROCKET AND METHOD OF ITS FLIGHT Russian patent published in 2015 - IPC F42B15/00 

FIELD: aircraft engineering.

SUBSTANCE: proposed rocket comprises upper stages with control system and payload, lower stages composed of piston-cylinder pair, ring frame with ring pyro element, onboard cable circuit composed by a free-deformable cable bundle. Cylinder is composed of a structural shell made up of a wafer structure filled with a monopropellant and including pyro elements and piston. Said cylinder is composed of untight shell connected with sealed bottom with four-chamber liquid-propellant engine consisting of two chambers of reinforced coal-plastic or carbon-carbon composite with expansion degrees. Besides, it includes two sealing belts composed of resilient ring with magnetic ring consisting of a set of permanent magnets. Four-chamber liquid-propellant engine comprises steering drives, telescoping nozzle adapters, monopropellant feed shutoff valves. Active paste is composed of said monopropellant and cylinder shell. Liquid-propellant engine is initiated by control system signal to activate ring pyro element at the frame to allow the piston displace relative to cylinder. Signal is fed to pyro elements to separate the cylinder ring elements. Engine chambers are separated from the rocket at the time moment depending on rocket range, engine thrust, rocket characteristic of gravity centre, rocket current flight time and combustion chamber separation time depending on expansion degree. Signal is activated to switch on cylinder supercharging for complete consumption of monopropellant.

EFFECT: enhanced performances.

13 cl, 7 dwg