Passive and active leading edge devices on a simple swept back wing

Elisa Phillips, Lutz Taubert, Israel Wygnanski, Moritz Menge

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

2 Scopus citations


Tests were carried out on a 45° swept back wing having several Aspect Ratios ( AR), but most of the presented results are concerned with a highly unstable, high AR wing. Test velocities ranged between 20-50m/s, depending on specific test needs (e.g. Pressure Sensitive Paint, PSP, required higher speed). The wing being based on a NACA0012 airfoil had a round leading edge that prevented the generation of a leading edge vortex prior to tip trailing edge stall, unless a protuberance like a vortilon or a snag were placed at the leading edge. The shape of the leading edge was modified in order to assess its significance. Interaction between the leading edge vortex and the trailing edge separated region resulted in non-linear pitch behavior that was controlled by passive and active means. At larger incidence angles the leading edge vortex propagated inboard and the trailing edge separated region moved upstream requiring a change in the control strategy in order to remain effective. Balance results, flow visualization and Pressure Sensitive Paint show how to force the downstream turn of the leading edge vortex in order to control its path and its effect on pitch-up.

Original languageEnglish (US)
Title of host publicationAIAA Aviation 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages18
ISBN (Print)9781624105890
StatePublished - 2019
EventAIAA Aviation 2019 Forum - Dallas, United States
Duration: Jun 17 2019Jun 21 2019

Publication series

NameAIAA Aviation 2019 Forum


ConferenceAIAA Aviation 2019 Forum
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Aerospace Engineering


Dive into the research topics of 'Passive and active leading edge devices on a simple swept back wing'. Together they form a unique fingerprint.

Cite this