FIELD: shipbuilding. SUBSTANCE: passage for sucking the boundary layer has varying section and is provided with slotted holes in its narrow portions; flow deflector is provided with chamber which brings these holes in communication with perforations of flow deflector. Flow deflector is wing-shaped in form. Aft extremity is provided with plating of aft counter which has perforations for sucking boundary layer from it to chamber formed before plating and brought in communication with narrow portion of ejection passage by means of slotted holes provided in plating of aft counter. EFFECT: enhanced reliability. 3 cl, 4 dwg
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