ELECTROMAGNETIC FUEL VALVE Russian patent published in 1994 - IPC

FIELD: control system of liquid-propellant rocket engines; handling of aggressive media. SUBSTANCE: fitted on valve housing is electromagnet with spring-loaded armature. Housing has also seat and it accommodates shutoff member and guide bushing. Placed in bushing bore is rod with longitudinal centering projections engaging with bore surface. Armature, rod and shutoff member are rigidly connected to each other. Pusher is rigidly connected with armature. Shutoff member and rod are made of thermoplastic material and are secured on pusher. Projections are made with summary length of line of contact with surface of bore in section by plane perpendicular to axis of rod equal to 6 - 8% of length of bore circumference. Guide of armature is made in form of dowel placed in guide bushing and armature in parallel with rod axis. EFFECT: enlarged operating capabilities. 2 cl, 2 dwg