https://www.cgtrader.com/3d-models/aircraft/helicopter/sikorsky-ch-53-sea-stallion-helicopter
https://www.cgmodel.com/model-310301.html
Sikorsky CH-53 Sea Stallion is originally created with 3dmax2020, rendered on Unreal Engine 4.15.3 without any post-processing
All of the movable are rigged and animated, like blades (advanced composite rotor) rotation and fold, loading ramp open / close, refueling probe stretching, wing deice rotating etc
Materials are instanced, which based on one 1 master material
All of the bones are renamed and tweaked correctly, no need other set up
Generated accurate Physics Assets and collisions with static mesh shape
In additional to side door and load ramp door for animating with those bones