A vertical lift craft includes a vertical lift craft, a powered rotor
system including two counter-rotating lift rotors rotatably mounted to
the body and a cage fixed to the body and extending about the powered
rotor system, the cage including flexible rods extending in an open mesh
pattern and mutually attached at a plurality of intersections between the
flexible rods and netting extending between the flexible rods to cover
the cage. The mesh pattern includes latitudinally and longitudinally
extending flexible rods and the cage further includes elastomeric bumpers
at the plurality of intersections between flexible rods. A base has axles
fixed relative to the body and wheels on the axles.