Skywalker 2013 UAV platform completed

 

Hello everyone,

I have finally completed the build of my UAV platform. I'm talking just the plane here; the autopilot issue is a very different one and I'm still experimenting on it.

I always like to give back to DIYDrones, which conveys very valuable information to me daily, so here you have it.

Here is photo gallery. If anyone needs a parts list I'll be happy to provide one.

Side View

Under-Side PaintJob

Direct USB Connection Port

GPS and Receiver Installation

Battery and Differential Pressure Sensor Placement

USB Port Hatch

The Carrying Case

Made out of PVC tubing

Inside its Belly

Thanks for watching!

Views: 12597

Comment by LanMark on October 22, 2013 at 11:01am

I don't know much about planes but I was wondering why there are two ESCs when you only have one motor?

Comment by Georacer on October 22, 2013 at 11:09am

There is only one ESC in the build and it is the one you can see in blue heatshrink in the middle of the second-to-last picture.

The parts you are talking about are Battery Elimination Circuits (BEC). A similar circuitry is often placed in an ESC that allows you to power a receiver, but having stand-alone modules to do that job has multiple benefits:

  1. It allows for more current draw. The ones I use can supply 8A of continuous current, much more than any ESC BEC can do.
  2. They can operate independently from an ESC. This allows for system redundancy. If your ESC is fried for some reason, you can still maintain power to your control surface servos and autopilot
  3. They allow for a modular system. You can design and implement independent systems for control surfaces electronics, autopilot, propulsion, each with its own power source. Then you just connect the wires among them. However, this can realistically be done only in larger airframes, with greater payloads.

T3
Comment by Stephen Zidek on October 22, 2013 at 11:14am

Beautiful plane!  This is the kind of thing I'm going to do when I have disposable income, instead of being a starving college student.

Comment by Georacer on October 22, 2013 at 11:19am

Typically and officially, I'm still a university student myself. And this really is the time to thank my parents (sponsors) for allowing me to get involved with the profession I love.

Comment by Guy Compton on October 22, 2013 at 11:53am

Many that was an awesome job.


100KM
Comment by Hein du Plessis on October 22, 2013 at 12:12pm
Are those 5Amp batteries? How are you going to fix the cg??especially with a camera up front? I have to put counter weights in the back.
Comment by Georacer on October 22, 2013 at 12:16pm

While I was building, rumors had it that I would need to add counter weights to the front of the plane, even with 10Ah worth of batteries. It turned out this was not the case.

Right now, I have the batteries placed as far back as I can and I have added 60grams of lead counter-weight under the horizontal stabilizer. The center of gravity now lies at 1cm in front of the aileron servo wire line. It could be further back, but "steering like a truck" is a feature I like about this plane.

Comment by Georacer on October 22, 2013 at 12:17pm

I intend to mount the camera on a turret under the belly of the plane, so I should be able to fix it under the CG. Anyway, if I add video transmission equipment, I can put it in the tail and remove those extra counter weights.


100KM
Comment by Hein du Plessis on October 22, 2013 at 12:20pm
Silly rumour :) I got a 8Amp from rmrc that slides in flat under the tray all the way to the back. I still have a problem because the gopro with pan and tilt is up front. I fly with cg 2cm behind servo wire.

100KM
Comment by Hein du Plessis on October 22, 2013 at 12:22pm
I've got a third camera on the tail and my tk102 gps tracker on the back of the cf rod. Helps.

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