George Wright
I might mention that George co wrote a book on ducted fans.
Is the book still available George?
Paul Lamar
George,
I saw a German mid-fuselage ducted fan - it looked a beauty, however you
may
know it as a shrouded propeller.
I believe it was developed in the early seventies, do you know of this
aircraft.
George ( down under)
Maybe it was this one. The original prototype has been flying for more
than
20 yrs. It uses a Koenig 3 cyl 2 stroke radial of 25 hp. Charles Ligeti
was killed testing
the second prototype which was to go into limited production.
I have scaled the original design from 80 sq ft to 110 sq ft and hope
to
use the
XR-40 hp wankel ( http://www.rotary-xr40.com/). It flies very well in
X-plane and has
a top speed of 140 kts with a stall speed of 35 kts. L/D very good at
19/1.
Trying
to decide whether to use a direct drive ducted fan or a belt reduced
cockpit
adjustable
Ivoprop which would require more prop clearance.
Glenn
Paul/George, can you fellows tell me more on the aircraft in the last
post,
the triangular design/ducted fan has a lot going for it? thanks Bob
I think you mean Glen. I don't know what they would be.
Paul Lamar ...No rotor no motor.
I wrote this one up, too. The Ligeti Stratos is a difficult bird to
categorize. The original prototype flew very well and is currently in the
possession of Ligeti's son who is reverse engineering and updating it. The
second prototype crashed - apparently due to changes in the propulsion
system which created pitch problems. A slightly larger production version
was projected and the molds for the fuselage built. I wouldn't be surprised
to see it return. A University in Viriginia used this configuration in a
NASA design competition a few years ago under the name Ikolos. The clinker
was the choice of Rand cam engines for propulsion.
George Wright
Rand cam! Another scam.
Paul Lamar
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