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Effect of sweep and aspect ratio on the longitudinal aerodynamics of a spanloader wing in and out of ground effect (1981)

Kjelgaard, S. O. ; Paulson, J. W., Jr.

In: CASI

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Publication Date: 2019-06-28

Description: A wind tunnel investigation was conducted in the Langley 4 by 7 meter tunnel to determine the effects of leading edge sweep, aspect ratio, flap deflection, and elevon deflection on the longitudinal aerodynamic characteristics of a span distributed load advanced cargo aircraft (spanloader). Model configurations consisted of leading edge sweeps of 0, 15, 30 and 45 deg and aspect ratios of approximately 2, 4, 6, and 8. Data were obtained for angles of attack of -8 to 18 deg out of ground effect and at angles of attack of -2, 0, and 2 deg in ground effect at Mach number equal 0.14. Flap and elevon deflections ranged from -20 to 20 deg. The data are represented in tabulated form.

Keywords: AERODYNAMICS

Type: NASA-TM-80199

Format: application/pdf

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