_RL s2
s2=s*s
& 0.0118 _d 0 * s + 0.000116 _d 0*s2))
& 0.0184 _d 0*s + 0.000118 _d 0*s2))
& 77.942 _d 0*s + 1.728 _d 0*s15 - 0.0996 _d 0*s2)*invtk +
& 0.0118 * s + 0.000116*s2))
& 0.0184*s + 0.000118*s2))
& 1.728*s15 - 0.0996*s2)*invtk +