**Picture
1. **Wireframe of a section of the compressor. The outer diameter
is 87 mm.

**Picture
2. **Deformation due to 110000/min of rotational speed. The
amplification factor is set to 20.

**Picture
3. **Von Mises stress due to 110000/min rotational speed.
Plastification is considered. The peak stress in the bore is with 300
MPa at about yield stress. With that value crack-initiation
will probably occur after 2000 start-stop cycles.

**Picture
4. **Increase in diameter vs. rotational speed. Burst will occur at
about 170000/min. This is equivalent to a tip-speed of 775 m/s.

**Picture
5. **Equivalent plastification at the last converging time-step of
the burst calculation at about 170000/min

**Picture
6. **Frequency diagram of the compressor-blades. Resonances with
the vanes can not be avoided.

**Picture
7. **Eigenmode stimulated by the 19 vanes close to full speed. For this calculation the cyclic symmetry capabillity of CalculiX was used.

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