Non-planarity to improve subsonic performance of delta wing at low angle of attack

Y. Y. Zheng, N. A. Ahmed

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

14 Citations (Scopus)


The potential of nonplanarity to improve the lift generation of delta wings at subsonic speeds and low angles of attack was assessed through an experimental study. The solution features surfaces which deflect from the basic delta to form an X-configuration, and was inspired by the promises of high lift generation using vortex trapping on high aspect-ratio wings. Both load balance readings and detailed static pressure measurements were employed to enable a discussion of the effects of nonplanarity. Relative to the basic delta wing, the X-configuration displays an increase in lift at low angles of attack with corresponding increase in drag. An overall improvement in performance is displayed when compared leading edge vortex flaps (LEVFs).

Original languageEnglish
Title of host publication43rd Fluid Dynamics Conference
Publication statusPublished - 2013
Externally publishedYes
Event43rd AIAA Fluid Dynamics Conference - San Diego, CA, United States
Duration: 24 Jun 201327 Jun 2013

Publication series

Name43rd Fluid Dynamics Conference


Conference43rd AIAA Fluid Dynamics Conference
Country/TerritoryUnited States
CitySan Diego, CA

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering


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