8 90r=H/3 r=2H/3 75° 60 4 45 日 30 20° 10 0 90 10 75 -2 …x……, 30 45° -4 P.\174N11i1141112 02 0.4 0.6 0.8 r/h FIG. 6: The normalized longitudinal stress at the leading edge(solid) and at the trailing edge (dotted), are shown as a function of the height fraction and for several angles(H/a= 24).The maxima of the leading edge stress curves are marked by solid pointsFIG. 6: The normalized longitudinal stress at the leading edge (solid) and at the trailing edge (dotted), are shown as a function of the height fraction and for several angles (H/a = 24). The maxima of the leading edge stress curves are marked by solid points. 12