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Jemiba said:Well, Hiller was quite busy in the VTOL business until the '60s, I think.
Here's a project for a transonic VTOL design, as I understand the caption,
using the ejector augmentor principle, as the Lockheed XV-4.
(from Aviationweek, 10/1960 )
hesham said:Hi,
the Hiller two giant helicopter projects,one as a flying crane,
and the other as large transport.
http://www.flightglobal.com/PDFArchive/View/1963/1963%20-%201208.html
Jemiba said:From Aero 1/1960, a project developed by Hiller for the USN for
a transport with tiltable shrouded props.
hesham said:here is a folded and retractable rotor concept;
https://books.google.com.eg/books?id=8Hd4DlOqhhwC&pg=PA43&dq=retractable+rotor+system&hl=en&sa=X&redir_esc=y#v=onepage&q=retractable%20rotor%20system&f=true
Looks similar to the STORC concept, which would have used the fixed rotor
as a wing (NOT in flight, so it wouldn't have been a truecompound !)
hesham said:here is a folded and retractable rotor concept;
https://books.google.com.eg/books?i...y#v=onepage&q=retractable rotor system&f=true
Also;
https://books.google.com.eg/books?i...H#v=onepage&q=retractable rotor hiller&f=true