PROTECTION DEVICE OF LIQUID-PROPELLANT ENGINE (LPE) AGAINST STATIC ELECTRICITY Russian patent published in 2015 - IPC F02K9/60 H05F3/02 

FIELD: engines and pumps.

SUBSTANCE: in a protection device of a liquid-propellant engine against static electricity, which includes conductive paths attached by means of screws and nuts with one end to installation elements on housings of pyro valves and with the other end to bosses on the engine frame, pyro cartridges screwed into pyro valves, earthing bosses on the frame, earthing conductors, in which according to the invention, between the threaded part of pyro cartridges and the mating thread of a pyro valve seat, a thread on the pyro valve body and a thread of a tube of a start-up ampoule of the gas generator, as well as in places of attachment of the paths and earthing there applied is current-carrying enamel reducing active resistance of an electric circuit and serving at the same time as a locking device of threaded connections, to structures of pyro valve assemblies there connected are pipelines to which electrical jumpers are fixed, which are connected to the engine frame by means of fasteners; on a transverse tie member of its frame there arranged are bosses with earthing conductors connected to them.

EFFECT: improving reliability of electrical circuits for removal of electrostatic electricity from a pyro device.

3 cl, 16 dwg