Wind tunnel testing of a full scale helicopter blade section with an upstream active Gurney flap

Richard Loendersloot, J. Freire Gomez, J.D. Booker

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Abstract

Wind tunnel tests were performed on an aerofoil section comparable to that of a full scale helicopter blade section with an upstream active Gurney flap in the framework of the European project CleanSky ITD Green RotorCraft. A modified NACA0012 profile was used, with 23 Kulite pressure transducers embedded in the profile’s surface and with an integrated actuator system for the Gurney flap. The Gurney flap, positioned at 95% of the chord length and with a deployed size of 1.3% of the chord length, extended the full span width of the section. The aerofoil was supported by a mounting system with automated control of the angle of attack. The effect of the Gurney flap is assessed for various deployment strategies. The test campaign carried out was successful. The aerodynamic behaviour can be extracted from the data and contains valuable information for validation of 2D numerical models developed by other partners in the project. The most important improvement of the setup for future use is the stabilisation of the inclinometer readings, which showed a significant amount of noise.
Original languageEnglish
Title of host publicationProceedings of the European Rotorcraft Forum
Place of PublicationSouthampton
PublisherRoyal Aeronautical Society
Pages1-13
Publication statusPublished - 2 Sep 2014
Event40th European Rotocraft Forum, ERF 2014 - Southampton, United Kingdom
Duration: 2 Sep 20145 Sep 2014
Conference number: 40

Publication series

Name
PublisherRoyal Aeronautical Society

Conference

Conference40th European Rotocraft Forum, ERF 2014
Abbreviated titleERF
CountryUnited Kingdom
CitySouthampton
Period2/09/145/09/14

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Keywords

  • METIS-304227
  • IR-91928

Cite this

Loendersloot, R., Freire Gomez, J., & Booker, J. D. (2014). Wind tunnel testing of a full scale helicopter blade section with an upstream active Gurney flap. In Proceedings of the European Rotorcraft Forum (pp. 1-13). Southampton: Royal Aeronautical Society.