The ornamental design for a vtol fixed-wing flying platform, as shown and described.
FIG. 1 is a perspective rear left bottom view of the VTOL fixed-wing flying platform, the perspective rear right bottom view being a mirror image thereof;
FIG. 2 is a perspective front left top view of the VTOL fixed-wing flying platform, the perspective front right top view being a mirror image thereof;
FIG. 3 is a left side view of the VTOL fixed-wing flying platform of FIG. 1, the right side view being a mirror image thereof;
FIG. 4 is a front view of the VTOL fixed-wing flying platform of FIG. 1;
FIG. 5 is a rear view of the VTOL fixed-wing flying platform of FIG. 1;
FIG. 6 is a top view of the VTOL fixed-wing flying platform of FIG. 1; and,
FIG. 7 is a bottom view of the VTOL fixed-wing flying platform of FIG. 1.