In-Flight Flow Visualization Results from High Angle of Attack Tests on a Forward Swept Wing Aircraft with Comparisons to Water Tunnel Results

  • John H. Del Frate
Conference paper


Asymmetries in the vortical flow generated by the long forebody of the X-29 aircraft were suspected of causing uncommanded yawing moments at high-angles of attack. A smoke flow visualization technique was used to visualize the forebody vortices and to correlate any asymmetries observed with flight yawing moment data. This paper presents a method of analyzing smoke flow visualization data for comparison with asymmetric aircraft moments or forces. Good agreement was found between the forebody vortex asymmetries and uncommanded yawing moments.


Flow Visualization Angular Position Vortex System Local Timing Standard Side Force 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • John H. Del Frate
    • 1
  1. 1.NASA Dryden Flight Research FacilityEdwardsUSA

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