Propeller Launcher

FIG. 1 is a front and right perspective view of a propeller launcher; FIG. 2 is a rear and left perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left view thereof; FIG. 6 is a right view thereof; FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof. The broken lines in the drawings are included for the purpose of illustrating portions of the propeller launcher that form no part of the claimed design.