Richard Whitcomb
Richard Whitcomb is an
aeronautical engineer. In the 1950s, Whitcomb proposed the 'Area Rule', which used the total profile of the
airplane's
wing to calculate
drag and stated that the cross section of the aircraft should vary smoothly from nose to tail. In the area rule, the cross sectional area of the body should have a smooth variation with longitudinal distance along the body. There should be no rapid or discontinuous changes in the distribution of cross sectional areas. On the other hand, the supercritical airfoil behaves in a different way.