BLEED STRUCTURE OF AXIAL COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To make a recessed part on an air passage face small by opening a bleed hole when required and closing the bleed hole when not required to reduce a minus element with respect to aerodynamic performance and to improve the efficiency of an axial compressor and to avoid a danger of blade breakage by damping an excitation source. SOLUTION: A plurality of stationary blades 1 provided at an interval in the peripheral direction are provided on an inner face of a casing 2 of the axial compressor 8 of an engine, and the casing 2 has a plurality of bleed holes 3 communicating the inside with the outside between the stationary blades 1 and is provided with a bleed hole adjusting mechanism 15 attached to the casing 2 and changing an air passing area of the bleed hole 3 to adjust bleed flow rate communicating the bleed holes 3 by the bleed hole adjusting mechanism 15.