Analysis of Modified Lifting-Line Theory (1933) with Multiple Winglets

Ludwig Prandtl's modified lifting line theory explains the reduction in induced drag by 11% in comparison to elliptic lift distribution. Researches also suggest that induced drag reduction can be attained by employing by a winglet at the wingtip, by 15-20% (Whitcomb winglet). As a part of the research conducted, numerical analysis has been performed on a NACA 23012 wing of a taper ratio????=0.4516 with a geometric twist atn= 8 spanwise locations. The primary motive of this paper is to introduce the implementation of multiple winglets of varying lengths on a wing with bell-span (modified) lift distribution and analyse the induced drag differences