Page 226 - Aerodynamics for Engineering Students
P. 226

Two-dimensional wing theory  209

             air speed U. A vortex of strength rV is located at (x,, yv). Show that the distribution,
             k(x), of vorticity along the aerofoil from x  = 0 to x = c satisfies the integral equation





             where x = x1 is a particular location on the chord of the aerofoil. If  x, = c/2 and
             yv = h >> xv show that the additional increment of lift produced by the vortex (which
             could represent a nearby aerofoil) is given approximately by
                                                417
                                               -
                                               37rh2 '
   221   222   223   224   225   226   227   228   229   230   231