FIELD: aero-engine manufacture. SUBSTANCE: for changing fuel flow, setting device 31 moves metering device 30 to new position. Command valve 38 maintains pressure drop in channel 42, 43. Command pressure depending on position of metering device 30 is maintained in channel 43. Command pressure is applied to spring space of control valve 19. Position of servopiston 13 and, hence that of blades 11, depends on pressure drop in channels 43,44. EFFECT: improved control stability. 1 dwg
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