Hey everyone,

I'm Karan from India and have been involved with drones for around 3 years now. 

I'm the sub-coordinator of the Aero Dynamics club here. We are a bunch of highly motivated people who love building planes and see them soaring high up in the sky. You can check it out here:
For almost one year I worked on designing a solar powered UAV capable of theoretical perpetual flight so I have an in depth knowledge of multi-disciplinary optimization since you have to individually make each part efficient and as a system too. But sadly the project stalled due to lack of funds. I hope I'm able to pursue it further sometime in future. 
I have worked extensively in Aircraft CFD analysis and control systems (way point navigation). I have been working on these domains exclusively since the past 3 years. 
I have worked on multiple autopilot systems and have designed completely autonomous multi-copters. I have also worked on aircraft design and completely constructed a 4-axis CNC machine for foam cutting (airframes) and test rigs with my mates here. 
I've been in talks with Wayne Garris and hopefully we'll soon be working together on the next techpod along with the complete drone community. (if the design becomes open source)
Really excited about this, would be a great learning opportunity working withprofessionals like Wayne.
Looking forward to working with you Wayne.
Do check out the attached pictures.

Views: 2100

Comment by crystal garris on May 5, 2014 at 11:22am

Hey Karen, very nice! the bottom one, is that the solar power design you were talking about? whats the WS on the others so I can have some sense of scale? I will start a group here and post the files there for the time until some infrastructure is figured out.

Comment by Karan Chawla on May 5, 2014 at 12:09pm
Nah that's the plane I started designing for the search and rescue operation I told you about. The wingspan is about 3m although I plan to reduce the span a little.
Comment by Karan Chawla on May 5, 2014 at 12:11pm
And the one with the inverted v tail has a span of 2.2m and the canard has a span of around 2m too.
Comment by Antonie Kruger on May 5, 2014 at 12:15pm

Hi Karen, I smell the start of great things:) The bottom pic is a great rendering but the other 2 is great as well - bottom one of the real planes looks like a Rutan design. It's amazing what you can achieve with limited resources if the will is strong enough - what are you shaping the fuselages with?  Keep it up.

I like the way Wayne is steering this - seems to have good direction now.

Comment by Karan Chawla on May 5, 2014 at 12:29pm
A few months back we used to have a bow shaped hot wire cutter, we made templates and then we made the wings and the fuse. We sanded these to get the required finish. The designs weren't really accurate with this method So, we made a hot wire CNC of our own. Things have become way easier now.
We recently made our own 3D printer too.
Comment by Mike Evers on May 6, 2014 at 2:51am

I like the A-Tail, I just converted my Skyhunter so that I can transport it easily and pack it nicely back into the original box. I mounted my XPS RFU diversity receiver (http://www.xtremepowersystems.net/proddetail.php?prod=XPS-RFU) in the tail with the 2 antenna wires in a 90 degree angle with an X10 channel expander

(http://www.xtremepowersystems.net/proddetail.php?prod=XPS-X10%2B&am... ) in the Fuselage. Works like a charm.

The canard looks very interesting as well.

Comment by Grant Oswald on May 6, 2014 at 3:09am

This sounds really exciting. I hope this open source idea goes well!

Comment by crystal garris on May 6, 2014 at 6:41am
Mike, the ruton EZ is a tandem wing;-)
I really like the a tails as well. Probably one of the more efficient set ups. Considering it for TP2.0

grant, thanks! We have some very interesting people on board so far. Things are really coming together.
Comment by Karan Chawla on May 6, 2014 at 7:00am

Inverted V tail/ A tail has some really interesting characteristics. The first is tip vorticity reduction. A traditional tail is responsible for at least 3 vorticies, a standard V at least 2, and an inverted V almost none.

Each halve acts similarly to a winglet, for the other half, which in turn reduces the tip vorticity at the center. 

Inverted V has better yaw authority, and is more capable of coordinated turns. As the plane banks, the inner half of the V becomes more vertical, helping reduce slip. Also, as the plane banks, the outer half now acts more efficiently as an elevator. These two effects help maintain a constant speed, constant altitude, coordinated turn.

Comment by crystal garris on May 6, 2014 at 10:20am


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