I made two versions one which looks like a Valkyrie and another more generic version. the zip contains the cut down versions of the choppers.

Base body:
https://www.thingiverse.com/thing:3397514

Wings:
https://www.thingiverse.com/captain_ahab_62/designs

Weapons:
https://www.thingiverse.com/thing:4223003
https://www.thingiverse.com/thing:4126845
https://www.thingiverse.com/thing:4218005
https://www.thingiverse.com/thing:4219029