Abstract
Existing approximations for the effect of wing height on lateral stability are examined and found to be inadequate for configurations with a large ratio of body diameter to wing span. A closed form expression for elliptically loaded wings is developed that matches prior approximations for conventional configurations while also giving the correct trends for the large body configurations. The method compares favorably with results from a recently completed wind tunnel test. Nomenclature A = Aspect ratio b = Wing span c = Wing chord cl = Airfoil section lift curve slope CL = Wing lift curve slope Cl = Rolling moment coefficient Cl = Rate of change of rolling moment with sideslip (lateral stability) d = Body diameter or diameter of equivalent circular cross-section h = Body height w = Body width z = Height of wing above body centerline
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