Theory of Oblique Wings of High Aspect Ratio.
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING
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The aerodynamic characteristics of oblique wings in an inviscid, incompressible flow, linearized for small wing camber and incidence, are studied under the assumption that the wing aspect ratio is high. The present analysis differs from the classical lifting-line theory in that the flow field next to the wing section the inner solution is affected by a component of the wake vorticity parallel to the center line, and, hence, is not locally two-dimensional. A crucial aspect of the analysis involves the behavior of the three-dimensional corrections near the leading and trailing edges, which require special attention, lest nonuniformities arise. The results determined from matching the inner and outer solutions exhibit a strong asymmetrical spanwise influence of the wake vorticities, with a lift increase on the downstream wing panel and a lift reduction on the upstream panel. Results obtained are compared with surface-lift distributions generated by an inversed method for yawed elliptic planforms, and with span loadings generated by a panel method for elliptic flat plates wings with zero camber as well as an ESP extended-span planform wing.
- Fluid Mechanics