UAE6 - Wind Tunnel Tests Data - UAE6 - Sequence 7 - Raw Data

**Overview**

Sequence 7: Shroud Operating (P)

This test sequence used a downwind, rigid turbine with a 3.4° cone angle. The wind speed ranged
from 5 m/s to 25 m/s. Turntable angles from 0° to 30° were achieved, but the yaw error angle was
maintained at 0° by adjusting the nacelle yaw. The blade tip pitch was 3°. The rotor rotated at 72
RPM. Blade and probe pressure measurements were collected. The teeter dampers were replaced
with rigid links, and these two channels were flagged as not applicable by setting the measured
values in the data file to ?99999.99 Nm. The teeter link load cell was pre-tensioned to 40,000 N.

An airfoil-shaped aluminum shroud was placed on the tower below the 34% span five-hole probe. It
extended below the 91% span five-hole probe. The turntable angle was adjusted to position the
shroud at various angles relative to the flow, but the turbine yaw error angle was maintained at 0°.
Two additional points were collected where the turntable angle was 0°, and the turbine yaw angle
was 20° (71000200) or -20° (710M0200).

**Data Details**

File naming information can be found in the attached Word document "Sequence 7 Filename Key", copied from the Phase VI Test Report.