Lift Prediction of Spanwise Cambered Delta Wings

An analytic prediction method is derived to estimate the lift of delta wings with constant anhedral or dihedral, i.e., a V wing. The method is based on the leading-edge suction analogy, with expressions for leading-edge suction being developed that account for anhedral and dihedral. An empirical correction is combined with the resulting expression to incorporate an effective leading-edge sweep interpretation of wing roll. This approach allows an estimation of the disparate effects of anhedral and dihedral. The attached e ow lift component is estimated using a Trefftz plane expression for the apparent mass of a V wing. Comparisons are made with a variety of planforms, with encouraging agreement between theory and experiment being demonstrated.

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