from the illustrations, /Parrot/AR__Drone__2-AR__Drone__2

from the illustrations, /Denel__Aerospace__Systems/Rooivalk-AH_2

from the illustrations, /FAMA__helicopters/Kiss__209-Kiss__209-M

from the blog, /2012/12

from the blog, /2013/02

from the blog, /2012/09

from the illustrations, /Hughes__Helicopters/Cayuse-OH_6-D

from the blog, /2016/04