The model was created by inspiration of Leonardo Da Vinci's incredible designs.

This one particularly by the famous Aero Screw flying machine.

The various blend files contain the high-poly and low-poly models, their animations.

Versions: 

High Poly: Polycount: 2.3M Vertices 

- Joined

- Animated (Separate parts)

Low-poly: 100000 vertices (See second video)

- Joined

- Animated

Files:

1. Optimized, non-animated, joined  (High poly)

2. Optimized, in parts, animated (High  poly)

3. Low-poly, animated and joined (Low-poly, driven trough constraints and drivers)

4. Low-poly (low_poly_2), animated and joined (All parts keyframed)