Experimental measurement of unsteady lift and pitching moments for MiTEs on a S903 airfoil

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Lift and pitching moment wind-tunnel data was obtained for Miniature-Trailing Edge Effectors (MiTEs). Unsteady data was acquired, non-dimensionalized, and compared to numerical predictions. A 0.02c height MiTE located at 0.9c was employed, which provided the same lift enhancement as a 0.17c trailing edge flap deflected 8 degrees. Aerodynamic loads of both types of flaps at a reduced frequency of 0.21 and a Reynolds number of 1.0 ×106 were recorded. The results were interpreted using previously verified computational fluid dynamics. Experimental results captured the unsteady aerodynamics loads due to strong vortex shedding that occur downstream of the deploying MiTEs. This phenomenon was never measured during prior dynamic testing, and validates computational fluid dynamics predictions.

Original languageEnglish (US)
Title of host publication67th American Helicopter Society International Annual Forum 2011
Pages2949-2961
Number of pages13
StatePublished - Jul 28 2011
Event67th American Helicopter Society International Annual Forum 2011 - Virginia Beach, VA, United States
Duration: May 3 2011May 5 2011

Publication series

NameAnnual Forum Proceedings - AHS International
Volume4
ISSN (Print)1552-2938

Other

Other67th American Helicopter Society International Annual Forum 2011
CountryUnited States
CityVirginia Beach, VA
Period5/3/115/5/11

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Palacios, J., Overmeyer, A., Smith, E., Maughmer, M. D., Kinzel, M. P., & Szefi, J. (2011). Experimental measurement of unsteady lift and pitching moments for MiTEs on a S903 airfoil. In 67th American Helicopter Society International Annual Forum 2011 (pp. 2949-2961). (Annual Forum Proceedings - AHS International; Vol. 4).