| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressor which decreases influence of the secondary air on the main air stream. SOLUTION: A compressor is equipped with rotor blades 2 installed penetrating a hub 1 and stator blades 3 arranged between the rotor blades 2 and fixed to a casing 4, wherein each rotor blade 2 is equipped in its hub penetration part with a flange-shaped platform in such a way as aslant with respect to the main air stream, and its upstream is formed as intruding to the lower part of the hub 1.
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