"Thomas Schoene" wrote in message
link.net...
George Ruch wrote:

I remember what may be the same picture, a DC-9 fitted with a
high-bypass turbofan, and multiple scimitar-shaped fan blades
extending from the first-stage fan. Damned if I can find it now,
though. Nothing like it so far on the NASA Dryden site. Any other
ideas?

They called in an unducted fan or ultra-high bypass turbofan.

Pictures:

http://www.b-domke.de/AviationImages/Rarebird/0809.html

http://www.nurflugel.com/Nurflugel/NASM/Img0052.jpg

Russian prop benders were on site for the program. The engine saves about
23% of fuel compared to regular high bypass engines, of the time. (pre
tripple spool compressor)