DTIC ADA1016751: An Aerodynamic Analysis of Deformed pdf

DTIC ADA1016751: An Aerodynamic Analysis of Deformed

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The aerodynamic loading for deformed wings with elevons in both subsonic and supersonic flow is considered. The solution procedure falls into the potential flow category with appropriate restrictions. For subsonic flow, a lifting surface Kernel function formulation is used in which the local pressure loading for both wing and elevon is determined simultaneously in a semi-closed summation manner. Cases under study included gaps between wing and elevon in addition to arbitrary wing-elevon deformations. Results for all cases compared very well with experimental data. Experimental data taken in a low speed wind tunnel is also presented for a cropped delta wing and rectangular elevon in which the wing-elevon gap was the primary test variable. For supersonic flow, 3-D supersonic theory forms the basis for the solution procedure. Deformations are accounted for with the use of the doublet paneling added to the basic 3-D solution. Results agree very well with existing experimental data.

The gapped elevon and thick wing trailing edge problem is also addressed with satisfactory results. (Author

• Creator/s: Defense Technical Information Center
• Date: 4/1/1981
• Year: 1981
• Book Topics/Themes: DTIC Archive, Burkhalter, John E, AUBURN UNIV ALA ENGINEERING EXPERIMENT STATION, *AERODYNAMIC LOADING, *WINGS, EXPERIMENTAL DATA, DEFORMATION, KERNEL FUNCTIONS, WIND TUNNEL TESTS, COMPUTER APPLICATIONS, SUBSONIC CHARACTERISTICS, SUBSONIC FLOW, SUPERSONIC FLOW, LIFT, SUPERSONIC CHARACTERISTICS, DOWNWASH, ELEVONS, POTENTIAL FLOW, HINGES

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