Unmanned aerial vehicle

FIG. 1 is a front view of our ornamental design for the unmanned aerial vehicle;

FIG. 2 is an enlarged view of an encircled portion “ 2 ” of FIG. 1 ;

FIG. 3 is an enlarged view of an encircled portion “ 3 ” of FIG. 1 ;

FIG. 4 is an enlarged view of an encircled portion “ 4 ” of FIG. 1 ;

FIG. 5 is a back view thereof;

FIG. 6 is an enlarged view of an encircled portion “ 6 ” of FIG. 5 ;

FIG. 7 is an enlarged view of an encircled portion “ 7 ” of FIG. 5 ;

FIG. 8 is a bottom view thereof;

FIG. 9 is an enlarged view of an encircled portion “ 9 ” of FIG. 8 ;

FIG. 10 is an enlarged view of an encircled portion “ 10 ” of FIG. 8 ;

FIG. 11 is an enlarged view of an encircled portion “ 11 ” of FIG. 8 ;

FIG. 12 is a top view thereof;

FIG. 13 is a left side view thereof;

FIG. 14 is an enlarged view of an encircled portion “ 14 ” of FIG. 13 ;

FIG. 15 is a right side view thereof;

FIG. 16 is an enlarged view of an encircled portion “ 16 ” of FIG. 15 ;

FIG. 17 is a front, top perspective view thereof; and,

FIG. 18 is an enlarged view of an encircled portion “ 18 ” of FIG. 17 .

The broken lines in the drawings depict portions of the unmanned aerial vehicle that form no part of the claimed design. The additional broken lines surrounding the detail views are for the purpose of annotating the enlargements only and form no part thereof.