Some pictures of the TERN build

Cutting of corner reinforcements. They will be glued into the fuselage to allow the rounded bottom shape without loosing the strength of side and bottom connection.


Start of the inlet duct for the fan.


Inlet duct ready cut.


Trimming of fuselage front with hot wire. If the temperature of the wire is high enough it cuts through the PU glue without too much of a hitch.


First try to shape the fuselage. I have to revert to the sharp knife for the time, because I damaged my nice power supply for the special corner cutting tool.


Fuselage with the two main bulkheads. I used a selfmade sandwich foam/glass because I just had it. Naturally one can use 6mm (1/4") plywood for those. The wing stumps are still to be made.


Position of fan


Behind the fuselage is the UC blanc which I still had from another project.


View from the tail end. The bulkheads are not glued yet.


Indication of how inlet ducting fits in the fuselage.


Same from the other end

Views: 137

Comment by OlivierD. on November 5, 2009 at 6:59pm
Is that a WM400 fan? If so, good choice, good performer!
Comment by Matt Fisher on November 5, 2009 at 8:18pm
OMFG - I wish this was my project from foam cutter to fuselage type this is what I want. Great looking work!
Comment by Bryan Cuervo on November 6, 2009 at 6:03am
Looks great Wendi.
Can't wait to hear about the maiden flight!

Developer Comment by Mark Colwell on November 6, 2009 at 8:12am
Nice shop and work...
Comment by Matt Fisher on November 6, 2009 at 8:22am
How much power is behind your foam cutter nichrome and what temperature does it run at. Looks like it cuts very clean.
Comment by Curt Filipowski on November 6, 2009 at 9:55am
Build is looking really good. I am interested in seeing how the EDF flies this plane.
Comment by Wendi Smol on November 7, 2009 at 3:18pm
Hi, yes, it's a WM400 with a Medusa motor for 4s. It uses about 600W - 42A. That's good for about 12N static.
But I could perhaps go for a 5s - we'll see when it's done. With all the recording and drawing it won't get done before the spring. I want to try some "new" wing making procedure, that will take it's time too. So the maiden flight is still some way down the road. Sure you will hear about it early enough.
What do you mean "shop"??? That's my dining room!! :-) .
That little foam cutter is probably 20years old. It was one of my first toys when I started with foam building. For power I have an old regulated power supply, where I can adjust voltage and current from 0.0 to 30.0 V and A each. The foam cutter table uses about 50W. I adjust the current to 5A limit and then open the voltage to about 10V until the cutter wire has the right temperature. More info will be in the blog soon.
All the best
W.
Comment by Morli_ on November 7, 2009 at 4:06pm
Nice and interesting build Wendi, thanks for sharing
Comment by isobot on November 7, 2009 at 5:56pm
Thanks for the info and I was just about to comment on how nice your shop curtains are.....
Comment by Wendi Smol on November 7, 2009 at 6:09pm
Ha Ha

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