With a long-standing passion for 3D modeling, animation, and design, I am confident I can create an apt simulation of the Sikorsky S70 rotor system for you. My expertise in 3D visualization and modeling, coupled with my proficiency in popular software such as 3ds max and Adobe Suite, will ensure that the generated model clearly exhibits the key aerodynamic forces.
Understanding the need for a balance between aesthetics and functionality, I can primarily focus on modeling the rotor system if required. Moreover, drawing from my experience in video editing and animation, I can proficiently create a detailed demonstration video featuring the movements you've outlined: flapping, lead-lag, and feathering.
Furthermore, since a high-quality functional 3D print is imperative to your project, I assure you that my skills extend to producing designs optimized for 3D printing. Working with tools like Marvelous Designer and Art CAM gives me an edge by allowing me to craft intricate designs that tolerate mechanical stresses well. Combining all these strengths, I guarantee delivering comprehensive 3D design files (in STL or OBJ format) along with a functional printed model and an engaging video demonstration. Let's create something incredible together!