OPTIMIZATION of wing design aims at finding the best compromise between conflicting aerodynamic requirements and considerations of structure weight and stiffness. Since the profile drag of a laminarizcd aircraft is very small, the induced drag has to be correspondingly reduced for proper matching. Reduction of induced drag can only be obtained, for a given dynamic pressure at the cruise, by increasing the span, and that reflects on structure weight.
Lachmann, G. (1962), "Boundary Layer Control for Low Drag: A Review of the Present Situation and an Assessment of the Potentialities of Laminarization Techniques", Aircraft Engineering and Aerospace Technology, Vol. 34 No. 4, pp. 108-115. https://doi.org/10.1108/eb033548Download as .RIS
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