FIELD: turbine engineering. SUBSTANCE: turbine has one set of adjustable guide vanes 8, one set of working vanes 5, and non-adjustable grid of guiding vanes. The ratio of the chord of the adjustable vane to its stroke is less than this ratio for nonadjustable guide vanes 13. The adjustable guide vanes have straight contour line with symmetry profile. EFFECT: improved design. 6 cl, 2 dwg
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