Lift enhancement by a stationary leading-edge vortex over a high aspect ratio wing

Hadar Ben-Gida, Roi Gurka, Daniel Weihs

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Enabling a leading-edge vortex (LEV) is a possible mechanism to significantly increase the lift on wings. This is well known for slender delta wings, for which various analytical models were developed and shown accurate predictions of the lift enhancement. By suitably designing the wing planform, LEVs can also exist on high aspect ratio (AR) wings. This is a three-dimensional effect and in this study, we present a pseudo-three-dimensional flow model for solving the stationary LEV phenomenon over a high AR swept back wing, with sweep increasing towards the wingtip. Our model captures the phenomenon by satisfying conservation of mass and vorticity within the LEV, and using a combination of strip theory and the lifting-line theory. An example of a parabolic swept back wing, confirms that wing geometry can have a major role in holding a LEV steadily over the upper wing surface, resulting in significant lift enhancement of up to 70% in certain cases.

Original languageEnglish
Title of host publicationAIAA Aviation 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages15
ISBN (Print)9781624105890
StatePublished - 1 Jan 2019
Externally publishedYes
EventAIAA Aviation 2019 Forum - Dallas, United States
Duration: 17 Jun 201921 Jun 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


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