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

Overview

Sequence K: Step AOA, Probes (P)

This sequence was designed to quantify the 3-D blade static angle-of-attack response in the presence of rotational influences by varying the blade pitch angle. Sequence K used an upwind, rigid turbine with a 0° cone angle. The wind speeds ranged from 6 m/s to 20 m/s, and data were collected at yaw angles of 0° and 30°. 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.

The blade pitch angle ramped continuously at 0.18°/s over a wide range of increasing and decreasing pitch angles. A step sequence was also performed. The blade pitch was stepped 5°, the flow was allowed to stabilize, and the pitch angle was held for 8 seconds. Then the pitch angle step was repeated. Again, a wide range of pitch angles was obtained, both increasing and decreasing. The file lengths for this sequence varied from 96 seconds to 6 minutes, depending on the pitch angle range. Some short points were collected at 0° yaw and 3° pitch to verify the functionality of the instrumentation. The file name convention used the initial letter K, followed by two digits specifying wind speed, followed by two digits for yaw angle, followed by RU, RD, or ST, followed by the repetition digit. The angle-of-attack motion was differentiated by RU (ramp up), RD (ramp down), and ST (step down then step up). This sequence is related to sequences L and R.

Data Details

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

Data and Resources

Field Value
DOI 10.21947/1483674
accessLevel public
bureauCode {019:20}
catalog_@context https://openei.org/data.json
catalog_@id https://openei.org/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
dataQuality true
identifier https://data.openei.org/submissions/4206
issued 2018-11-28T00:00:00Z
landingPage https://a2e.energy.gov/data/uae6/uae6.z10.00
license https://creativecommons.org/licenses/by/4.0/
modified 2020-03-27T00:00:00Z
programCode {019:010}
projectNumber 67025
projectTitle Wind Data Hub
publisher Wind Energy Technologies Office (WETO)
resource-type Dataset
source_datajson_identifier true
source_hash 9b6a82d950d11d79e279a72c8569d265b4c30a73
source_schema_version 1.1
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 00
  • a2e
  • amerigeo
  • amerigeoss
  • atmosphere-to-electrons
  • ckan
  • eere
  • geo
  • geoss
  • national
  • north-america
  • raw-data
  • sequence-k
  • uae6
  • united-states
  • unsteady-aerodynamics-experiment-phase-vi-nrel-nasa-ames-wind-tunnel-experiment
  • weto
  • wind
  • wind-tunnel-tests-data
  • z10
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer Lee Fingersh
maintainer_email lee.fingersh@nrel.gov
metadata_created 2025-11-22T18:00:54.264932
metadata_modified 2025-11-22T18:00:54.264935
notes **Overview** Sequence K: Step AOA, Probes (P) This sequence was designed to quantify the 3-D blade static angle-of-attack response in the presence of rotational influences by varying the blade pitch angle. Sequence K used an upwind, rigid turbine with a 0° cone angle. The wind speeds ranged from 6 m/s to 20 m/s, and data were collected at yaw angles of 0° and 30°. 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. The blade pitch angle ramped continuously at 0.18°/s over a wide range of increasing and decreasing pitch angles. A step sequence was also performed. The blade pitch was stepped 5°, the flow was allowed to stabilize, and the pitch angle was held for 8 seconds. Then the pitch angle step was repeated. Again, a wide range of pitch angles was obtained, both increasing and decreasing. The file lengths for this sequence varied from 96 seconds to 6 minutes, depending on the pitch angle range. Some short points were collected at 0° yaw and 3° pitch to verify the functionality of the instrumentation. The file name convention used the initial letter K, followed by two digits specifying wind speed, followed by two digits for yaw angle, followed by RU, RD, or ST, followed by the repetition digit. The angle-of-attack motion was differentiated by RU (ramp up), RD (ramp down), and ST (step down then step up). This sequence is related to sequences L and R. **Data Details** File naming information can be found in the attached Word document "Sequence K Filename Key", copied from the Phase VI Test Report.
num_resources 1
num_tags 20
title UAE6 - Wind Tunnel Tests Data - UAE6 - Sequence K - Raw Data