I have read that there are presently many 'Aviation Heads' trying to figure this out and are producing CGI images of their best guesses. I don't
know if this is one of them but the article this image comes from says 'CGI of potential helicopter'. www.defencetalk.com...
What you are seeing is the tail section of the chopper, not the entire thing. Thus, the entire aircraft is much larger than what is in the picture -
this is just a piece of it .