treiner jets
 

photos my treiner in Brazil
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RE: treiner jets
 

i had the same idea! the facet looks an awful lot like an alphajet!

RE: treiner jets
 

ummm, its trainer...

RE: treiner jets
 

Hi Hiran, I was ready to send a PM to you when I found this thread. We started building here a new plane, smaller than the Hotcat and without the hassle of the pneumatics,brakes,speedbrakes and retracting gears. It was designed for 12 -18 Lbs turbines. We are calling it JM-1 (Jato de Madeira - 1) or wooden jet one (kind a rutan name) :-)
I will post some pics of the building and hopefully the flight report! Regards, Enrique

RE: treiner jets
 

OH GOD,
WOOD AND TURBINES......... WOOOOOOOOOOOOOOOOOOOOOOOOOSH

RE: treiner jets
 

Are you saying that foam and fiberglass are less fire prone than wood???

LOL

Regards, Enrique

RE: treiner jets
 

Hmmm...seems to me with the wood fire you could at roast weenies. Foam and fibreglass would poison you and the ozone bringing out the enviornmentalists. You'd then loose that jet flying site to a woodpecker.
lol

RE: treiner jets
 

Agree, let's stop charring bad-smelling expensive composites! :)

RE: treiner jets
 

erbroens - nice looking design. Looking forward to your posts on construction and flight testing.

RE: treiner jets
 

Thx Bobber,I will try to keep this thread as a blog of this plane project.

Regards, Enrique

RE: treiner jets
 

As promised, time to show some pics. After hand drawing the full size plans in brown paper, and printing the wing and stab section using the Winfoil software, we started to glue some balsa. The fuse sides are 1/4 inch balsa with a 3/16 balsa doubler from the wing tube location thru the tail section. The formers are 3 mm plywood unless the nose gear support that is 10mm . The crooked formers have 2 functions , to improve the tail rigidity and to anchor the turbine support plate. The overall lenght of the plane is 2 meters, has about 950 sq.in. of wing area and the projected dry weight is about 15 lbs.

RE: treiner jets
 

OK.some more pics. After venting some frustration after some mistakes, (first pic) we finally found the correct shape of the leading edge extensions, I printed again the airfoils, (naca 0007 at the root blending into a naca 0010 for the rest of the wing.) while I was doing this, Mr. Patake, the builder started to shape the laminated balsa blocks to the rounded shape and It started to look more like a plane! he also done the large hatch with the canopy, and the rudder that is built flat (a balsa truss with 1/16 side planking) we also reinforced the already reinforced fuse sides with a 3 mm plywood support for the wing tube. The LEX are also 3 mm lite plywood with lightening holes. No big problems found until now, and the building is been done very rapidly, mostly because we don´t spend time making fiberglass parts or a molded plastic canopy.

Regards, Enrique

RE: treiner jets
 

wide angle pics...

RE: treiner jets
 

Hi,Enrique
Hi,Hiran

Im Joel from Pernambuco,and I´d like to know more about your jets and turbines.
Recently I purchase a FTE 750 and this is my first experience with turbines and I will need
to talk about jet models for this engine.
Send to me yours emails and fones for contact.

Regards,
Joel

RE: treiner jets
 

It looks like your design is going to be great for a small turbine.

I posted this one several weeks ago of a creation of mine. I like the looks of yours much better. I have a Wren MW54 on mine and expect to fly it soon. I hope you will kit your design. I think it will be a good sellerl.

Hal
MS Gang Country

RE: treiner jets
 

my email:[email protected]

Regards,
Joel

RE: treiner jets
 

Thanks Hal, At this time I am not thinking in kitting this plane, i am designing it and hopefully flying it by pure fun , and it is fun too to share this experiment. However, the guy that is building it , works full time on this activity . I guess that if the plane flies really well, it could be sold RTF by him, or by any other manufacturer or perhaps a model magazine would publish or sell the plans. But it is better to wait a little more to see if the jm-1 proofs if is worth of it! BTW your plane looks would be much better if you somehow round more it at the cabin area, but if it flies well, you better don´t change it! ;)

Regards, Enrique


Joel My Friend! don´t need to panic! just click the PM to send me a personal mail with
your questions (we speak portuguese too!)

RE: treiner jets
 

in post #13, it looks a little like the Dj-3 DF model
[link=http://www.volkan-dil.co.uk/Gallerys/dj3/images/PICT1322.jpg]Volkan Dil's DJ3[/link]

RE: treiner jets
 

by the way, looking good[sm=thumbup.gif] be good to hear out it turns out.

RE: treiner jets
 

Thanks Dave, I saw the Japanese DJ-3 and it is very similar to this plane, but this plane is also very similar to a very old BV ducted fan design called "Sundowner" that resembles a Phantom with a exposed fan, and I remembered
this particular plane when I first thinked about the JM-1. I also picked many features of some planes like the double-delta wing platform of the Kangaroo, the easy building type of fuselage of the Facet , etc.

Regards, Enrique

RE: treiner jets
 

Enrique

I agree mine would look a lot better with a rounded cabin area. That is why I like the looks of yours.

My original design had a straight wing and a single rudder but I couldn't get it to balance so it evolved into this design. I am anxious to know how yours flys. I might be able to adapt my wings to a design similar to yours.

Hal

RE: treiner jets
 

Hal, If you wish , you could send me your airplane data to see IMHO if a wing change is needed or other modification before you
start to saw off those wings!

Regards, Enrique

RE: treiner jets
 

Enrique,

This is a very nice design indeed and an interesting thread. I look forward to more photos as you progress. In particular, I like your approach to achieving tail volume without going to twin booms.

RE: treiner jets
 

Thx Bobber, more Photos to come next week... it is starting to look cool now, and I hope that this looks continues after many flights!
;)

Rgds, Enrique

RE: treiner jets
 

Time for more pics... The airfoils printed in the Winfoil software where transfered to aluminium plates for hot-wire cutting of the wing and stab. This wing are quite tapered and swept-back, so we used a reference marking at each tip to make the cut as accurate as possible, with one guy trying to match the number count of the other guy, and keeping the speed of the cut as smooth and even as possible. Btw, the airfoil at the outer panels of the wing is a naca 0010, with 2.5 degrees of washout... why 2.5 ? because 2 seemed too little and 3 too much! :-) the stab uses
a naca 0007 at the root and a naca 0009 at the tip without any washout. The wing incidence is 1 degree at the lex, and about 0 at the MAC and - 1,5 degree at the wing tip . the stab will be
set at about -1 degrees relative at the MAC. In the last pic , the foam core has a semi-rib that
anchors the wing tube guide.