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Author-hosted Virginia Tech course notes. Appendix A, Geometry for Aerodynamicists, archive.aoe.vt.edu/mason/Mason_f/CAtxtAppA.pdf , is dated 23 October 1997: pp. A-3–A-4 give the four-digit thickness polynomial and nose radius; pp. A-27–A-29 define wing area, mean aerodynamic chord and trapezoidal-planform quantities.

Additional cited passage: Appendix A, p. A-1, equations (A-1)–(A-3), upper and lower surface construction by offsets normal to the mean camber line. The following paragraph notes that neglecting the camber-line slope simplifies the inverse extraction of thickness and mean-line geometry. ^[ref]

Additional exact sweep locators: Appendix A, p. A-29, equations (A-97)–(A-101), leading- and trailing-edge coordinates, linear chord distribution and conversion between sweep at different fixed chord fractions. Equation (A-100) relates tangents of sweep angles rather than the angle differences. ^[ref]

Virginia Tech open textbook, 2026; author William H. Mason, editor Pradeep Raj. The publisher landing page identifies the author and design-oriented scope. Appendix A.4 treats planform analysis; the Preface documents the posthumous editing of Mason’s course notes. Official departmental identity confirmation: www.aoe.vt.edu/about-us/news/mason-memorial-distinguished-lecture/mason-configuration-aerodynamics.html .