Eric Ruttan wrote:

Paul I thought you would find this interesting.

http://www.canardaviationforum.dmt.net/showthread.php?t=616

Eric

 Robert Clark,
If you want to copy something, this would be a good place to star, no

long

driveshaft.
I find it difficult to believe that this was designed in 1973 (
Germany)

and

built in 76 with what appears to be a 12A rotary.
What a great design!!

What have we all been doing for the last 30 years.
George (down under)

Vance W Jaqua wrote:

The version of the story as I heard it a long time ago - was that the fan
configuration would assist pilots transitionig to jets as it would allow
them, to experience the some of the adverse flying characteristics of
a jet at a reduced operating cost??? - Vance

george wright wrote:

Vance - what you're talking about is the Fantrainer (orig AW-2), a program
that drew from the Fanliner developments in an attempt to create an
economical "transitional trainer" for the W. German luftwaffe in the 70's.
They started with Wankel engines (NSU) and about 300 hp.  The exhaust system
was huge and draggy (external).  So the upgraded versions went to gas
turbines.  The original ducted fan supplier bowed out (Dowty) so they went
to MTU.  The luftwaffe didn't pick up the program and the only sale was to
Thailand which ended up with about 50 (most were kitted and assembled in
Thailand) and still uses them!  They fly very well.  The original German
prototypes still exist in private hands.

George & Marc, please don't forget to use this K&M graph in your new book on ducted
fans.

Paul Lamar
 
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