The Bell 47 is a single rotor single engine light helicopter manufactured by Bell Helicopter. It was based on the third Bell 30 prototype, which was the company's first helicopter designed by Arthur M. Young. The 47 became the first helicopter certified for civilian use on 8 March 1946.
Although the model does not have moving parts - The Keyshot .bip file does contain basic animation of rotas (along with the materials)
The aircraft used in the award-winning M*A*S*H television series
It's royalty free but If you use the model and it gets published somewhere - I'd love to know about it (just for interest) !!