Interaction, bursting and dynamic control of vortices of a cropped double-delta wing at high angle of attack
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Authors
Alkhozam, Abdullah M.
Subjects
High angle-of-attack aerodynamics, effects of fillets on vortex core trajectories, interaction and breakdown, flow visualization by dye-injection technique, static and dynamic water tunnel studies on double-delta wings
Advisors
Platzer, M.F.
Hebbar, S.K.
Date of Issue
1994-03
Date
March, 1994
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A flow visualization study of the vortical flow over a cropped double-delta wing model with sharp leading edges and its three derivatives with small geometric modifications (fillets) at the strake wing junction was conducted in the Naval Postgraduate School water tunnel using the dye-injection technique. The fillets increased the wing area of the baseline model by 1%. The main focus of this study was to evaluate the effect of fillets on vortex core trajectories, interactions and breakdown on the leeward surface at high angle of attack (AOA) with zero sideslip angle. Comparison of test results for different fillet shapes indicates delay in both vortex interaction and breakdown at high AOA, particularly for the diamond fillet shapes. The vortex breakdown data implies lift augmentation for both static and dynamic case, with the static data correlating well with recently published numerical data.
Type
Thesis
Description
Series/Report No
Department
Aeronautical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.