I had the electronics for a fast ~300 grams model lying around so I decided to venture in to the land of Hot-wire cutting.
The model I had in mind to start with was something like the ST-Model Typhoon 430 and just by chance my friend happened to have one.
I took the measurements of his model and printed out a Zagi-10 wing profile and made a template of do it yourself printed circuit board glass fiber.
Since I’m making flying wings with a sweep I made my setup with a pivot at one end so that I only need one template and can operate it by myself.
The wire I use is 0,4 mm “Nikrothal 80” and to power it I use a CV/CC adjustable 5A Power-supply.
I run it in CC (Constant Current) mode at about 1,7-1,9A for this type of foam.
The cut is very smooth and takes about 1-2 minutes depending on the current used.
Results.
I made the fist of cheep expanded polystyrene foam S80 (EPS).
Build up. 3mm Depron as control surfaces and winglets.
No carbon fiber in this first model.
This is the stuff I had laying around:
Motor: Fiago 20*40 ~3223kv
30A Jeti ESC
2s 1000mAh Li-po
Esky 9g servos
4,5*4 Prop
Maiden flight!
It flies! And it flies good too!
Very fast and snappish despite the sloppy foam and lack of carbon fiber.
A new AitT is born!
My old AitT has now retired after a work related accident involving the ground.
This is going to be its successor:
This one is made of extruded polystyrene foam (XPS) witch is a much stiffer foam.
This time its carbon fiber all the way.
Even the winglets get some carbon fiber.
Night flight AitT!
Yep your read right! The AitT V.2 is a Night Flyer!
And more, it flies great!
The difference is easily noticeable compared to the old AitT.
I have also changed the prop to a 4,75*4,75, changed the servos to a pair of Multiplex Nano-S and changed to a 25-35C battery.
This is not a model you fly with your mind on the dinner and I like that.
Unlimited vertical is nice too.
The Glowire that I use on the front is from a PC-modders kit and the top and bottom ones are from hobbycity.
I personally have no trouble with orientation flying at night, in fact I sometimes find it easier that flying at day.
Brian at RCFlightcast wanted to see what speed I used when cutting out my wing cores so I made him a short youtube video
Very very nice samplice is to build, congratulations for your work as always.
Surely I will build it myself.
Thanks for your projects.
I’ve tried to find the wing profile but can’t seem to find one.
hey david,
could you please tell me the plans for the wings. Or the template’s plans.
HiDavid.
Looks cool, any chance of publishing some plans please?