Hi,
Sikorsky designed an unknown tilt-propeller aircraft
in 1996;
http://www.google.com/patents?id=n7cZAAAAEBAJ&printsec=abstract&zoom=4&dq=Dornier+design+of+airplane&num=100#PPP1,M1
Sikorsky has done a number of tilt rotor and tilt wing projects. Was it a design study for the Army (assumed)? Likely. A real project... Well probably not.
https://verticalmag.com/news/sikorsky-tilt-wing-demonstrator-will-lay-groundwork-for-future-products/
"...The company’s prototyping group, Sikorsky Innovations, is working with engine manufacturer GE Aerospace on the tilt-wing demonstrator, which will have a maximum gross weight of 9,000 pounds...
RBW is Rotor-Blown Wing, Sikorsky's tail-sitter concept for the DARPA VTOL X-Plane program. The manned tilt-wing version is new.
http://m.aviationweek.com/blog/sikorskys-rotor-blown-wing-look-familiar
I appreciate the link, still getting used to this site somewhat. I do recall the rotor blown wing DARPA x-plane which is essentially a tilt wing without the fuselage... with one distinction is that Sikorsky's tail sitting rotor blown wing had a flapping rotor head as opposed to a rigid propeller...
Hi,
here is a two Sikorsky agility tilt-propeller and tilt-wing ground attack light aircraft V/STOL
projects,and a winged helicopter.
http://arc.aiaa.org/doi/abs/10.2514/3.43593
It surprised a lot of people to learn that Sikorsky has a long history of work on tilt-rotor, tilt-wing and compound rotorcraft. Witness their recent work on the JHL program. Sikorsky's X-2 work is a prime example of this companies willingness to "go it alone." I was at a forum several years...
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