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Sectored vane geometry and calculations in traveling wave domain
The stability analysis is performed for a sectored low-pressure gas-turbine vane cascade (Fig. 1) consisting of 15 sectors.
pitch/c = 0.89 stagger = 350
P,= 43° 02=62°
= 0.39 MIS2 = 0.70
range of k: 0.005 – 0.4
Figure 1. Sectored vane geometry and parameters for the profile
Steady and unsteady calculations are performed with the linearized inviscid fttw solver NOVAK [7]. An overview of physical and aerodynamic parame-
ters for the aeroengine profile used for the calculations in the traveling wave domain is presented in Fig. 1. The basic calculations in the traveling wave domain are performed at 10 different inter-blade phase angles for the three fundamental modes, bending in two orthogonal directions and torsion.
