SOLID-PROPELLANT ROCKET ENGINE Russian patent published in 1996 - IPC

FIELD: solid-propellant rocket engines. SUBSTANCE: solid-propellant engine has combustion chamber with solid-propellant charge placed in it, nozzle and acoustic damper made in form of cylindrical two-stage chamber and mounted on front bottom of combustion chamber. Stage of chamber of lesser diameter is directed towards nozzle and is located in passage of charge; acoustic damper is provided with spring- loaded piston located in stage of chamber of larger diameter. Provided on lateral wall of chamber of lesser diameter on side of front bottom of combustion chamber is radial hole. EFFECT: enhanced efficiency of suppression of vibratory combustion in wide range of frequencies. 2 dwg