It was Hughes XV-19 as in Aviationweek article.
http://www.aviationweek.com/aw/blogs/defense/index.jsp?plckController=Blog&plckScript=blogscript&plckElementId=blogDest&plckBlogPage=BlogViewPost&plckPostId=Blog%3A27ec4a53-dcc8-42d0-bd3a-01329aef79a7Post%3A3c4293b5-65e7-4bc0-87bc-ef3e73332cd9
High-speed compound from 1982:
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19820015368_1982015368.pdf
lllll As of 2019 I have transitioned; My name is now Rei. Please don't deadname or misgender me, thank you. <3 lllll
Hughes Model-485 CRA (Composite Research Aircraft):
http://www.dtic.mil/dtic/tr/fulltext/u2/684315.pdf
1960's high-speed compound design:
Hi all,
can you identify this Hughe Design? (Source: L+K)
Servus Maveric
Hughes eh? Looks like a sci-fi Bell 430.
Yes, Gunship, but the text says Hughes...
Maveric wrote:Yes, Gunship, but the text says Hughes...
I know. I thought the similarity was amusing.
Maveric wrote:Hi all, can you identify this Hughe Design? (Source: L+K) Servus Maveric
I think it was Model-1000,may be.