HYDROELECTRIC POWER AMPLIFIER WITH JET AMPLIFIER IN FIRST STAGE Russian patent published in 2016 - IPC F15B3/00 F15B9/07 

FIELD: aviation.

SUBSTANCE: amplifier is designed for follower electrohydraulic drives of aircraft control systems. Amplifier comprises an electromechanical converter with two control coils, upper and lower magnetic conductors, T-shaped anchor with a base, central core and flat spring feedback, housing of jet amplifier with a built-in jet amplifier, as well as a housing of a slide control valve with a four-edge throttling valve of a second stage, wherein lower magnetic conductor is provided with screws made from nonmagnetic material for limiting travel of a T-shaped anchor, upper magnetic conductor is provided with screws made from ferromagnetic material for fine adjustment of moment characteristic of electromechanical converter, jet amplifier is made in form of, arranged between two flat discs, a feed plate with a through central slot for a deflector and three wedge-like holes, one of them connected by wide part through said through slot in lower disc to channel head, has at outlet in central slot a rectangular stabilising section forming a pressure nozzle, two other connected by wide part through corresponding through channels in lower disc and channels in body of slide control valve with end cavities of slide valve of second stage, located opposite first hole to form narrow parts at outlet in central slot receiving windows, separated by a trapezoidal wall, size flat tops of which does not exceed size of pressure nozzle, value of gaps between rod and ends of central groove, as well as dimensions of each of receiving windows exceed sizes of pressure nozzles. T-shaped rod armature in area of feed plate has a wedge-shaped hole, wide part of which faces nozzle, a narrow - to receiving windows, forming a deflector.

EFFECT: high accuracy of adjustment.

8 cl, 4 dwg