Bryan Cuervo Male Ooltewah, TN United States: Share

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Bryan Cuervo commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Andy, I wish I had access to a CNC machine but all I have is the old school hot wire bow and variometer. I prefer 18 gauge stainless steel fishing leader to nichrome wire and I use either plastic laminate or 1mm thick Aluminum for templates. I would…

yesterday

Andy Geppert commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Thanks for all the great feedback Bryan. I'm rethinking the battery location - it should probably be in front from a impact point of view too. That way, when I it crashes, the battery doesn't take out all the electronics. I'm also planning on an EPP…

yesterday

Bryan Cuervo commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Hi Andy, I used the pink, Owens Corning, extruded foam I picked up from Home Depot, hot wired the MH60 airfoil and vacuum bagged one and a half layers of 6 oz standard weave fiberglass with WEST system epoxy. I don't have spars. I just let the wing…

on Tuesday

Andy Geppert commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Bryan, I'm ready to move forward with my wing/uav and your project is basically a perfect match to what I've been envisioning. For the benefit of myself and others who might be inspired by your design (or Jaron's, or Curt's...) I'd like to share my…

on Tuesday

Bryan Cuervo commented on Ben Levitt's blog post 'MatrixPilot 2.0 Released for UAV Dev Board'

This is fantastic! I'm humbled to have been a (small) part of such a professional, dedicated team. Bryan

December 11

Bryan Cuervo commented on Bryan Cuervo's blog post 'Pushing the UAV DevBoard to the limits'

Graham, I've not been able to get an accurate altidude hold yet but I guess it depends on how you define "accurate". A few plots on the referenced blog show the altitude vs time but I really need to tweek the variables more. I'm also flying a fast p…

November 24

Graham Dyer commented on Bryan Cuervo's blog post 'Pushing the UAV DevBoard to the limits'

I'm looking for a more 'pro' type UAV system and have seen a UDB equipped plane fly by Greg (Belli Button) and was very impressed. Your GPS tracks look good with relatively straight lines which is what I need, is the altitude hold pretty accurate to…

November 24

Bryan Cuervo commented on Bryan Cuervo's blog post 'Pushing the UAV DevBoard to the limits'

Hi Graham, I played around with ArduPilot for around six months and got my plane to successfully fly waypoints three times. Hopefully, by this time, the bugs have been worked out. The DevBoard performance has been pretty amazing and consistent. Also…

November 24

Bryan Cuervo commented on Bryan Cuervo's blog post 'Mega Easy Glider Mod for Ardupilot 2.2'

Colby, Unfortunately, I had ESC problems and lost this airplane in a fire. Overall, I was pleased with how she flew with the inverted V-tail.

November 24

Graham Dyer commented on Bryan Cuervo's blog post 'Pushing the UAV DevBoard to the limits'

Hi Bryan, so the DevBoard seems to work very well, how does it compare to ArduPilot? Is it's waypoint and altitude hold very accurate? Also it seems to fly pretty straight to a waypoint?

November 24

Colby sts commented on Bryan Cuervo's blog post 'Mega Easy Glider Mod for Ardupilot 2.2'

any updates on this airframe? i am thiknking about doing it to my easy glider. Any suggestions?

November 23

13brv3 commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Hi Bryan, Based on your description of editing, maybe I AM doing it right :-) I'll take a look at the other software, but the utility that comes with the PhotoMate887 is pretty good, and has track editing capability. The problem, as I'm sure you kn…

November 23

Bryan Cuervo commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Wow Rusty, That looks great! To edit my tracks, I open them in notepad and delete the coordinates I don't want in the final picture. This is tedious and I have to delete some, look at the results in GE, delete some more ------ Ricardo found some onl…

November 23

13brv3 commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

BTW, this airport is not active on the weekends. It's a military training field, that the R/C club is allowed to use on weekends and holidays.

November 22

13brv3 commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Greetings, I managed to make a few laps before dark, and here's the logger results. This is with Ben's code, and a combination of what Bryan set for parameters, and what I thought it would be for my plane. Altitude hold was not on, and neither was…

November 22

Curt Filipowski commented on Bryan Cuervo's blog post 'Flight tests with the UAV DevBoard'

Bryan, your attention to detail is not wasted here. I also read about the tail volume ratios but I ended up erroring on the side of to large. I am betting the washout you have added into your wings is what is holding your stability with small vertic…

November 22

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About Me:

Mechanical Engineer with a life long passion for RC aircraft and aerodynamics. Private glider pilot.

Bryan Cuervo's Videos

Tailless with UAV DevBoard

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Bryan Cuervo's Blog

Pushing the UAV DevBoard to the limits

Tailless & Wingletless from Bryan Cuervo on Vimeo.

In one more attempt to test the abilities and push the limits of Bill's UAV DevBoard, I removed the winglets from my tailless design so now there are no horizontal or vertical stabilizers.
The video is in three segments; the first showing manual flight with stabilization disengaged. You can see the difficu… Continue

Posted on November 18, 2009 at 5:06pm — 9 Comments

The UAV DevBoard and latest firmware in action

Showing off Bill and Ben's excellent firmware in the UAV DevBoard----
The compete story is here.

Complete Waypoint Circuit from Bryan Cuervo on Vimeo.

Continue

Posted on November 7, 2009 at 2:44am — 10 Comments

Flight tests with the UAV DevBoard

After my last UAV project went up in flames (literally!) I’ve shifted gears and designed a dedicated autopilot (AP) test vehicle. She is a tailless plane with removable wings for transportation and has plenty of room in the fuselage with easy access.

… Continue

Posted on October 4, 2009 at 4:00pm — 108 Comments

Flight Tests With the EG 2.2

I’ve started flight tests with the latest Ardupilot code and hardware and will post my findings in this blog post. Info on my plane and set up can be found HERE. I’ve found the EG 2.2 has similar flight characteristics to the original EasyGlider including the same “reverse roll” and “reverse pitch” settings in the code so these results should help anyone flying the stock glider.
A few notes on what I have… Continue

Posted on July 14, 2009 at 4:02am — 31 Comments

Ardupilot Success Stories

At this point, the only way to get my plane flying with Ardupilot is to buy a different FTDI cable which may or may not work with my setup(I don’t have the programming skills to bypass the configuration utility and add waypoints directly into the code). I’m running Windows Vista on my laptop and have the latest Ardupilot board with the shield kit as shown below. I’ve also installed the latest code, configuration utility and the newest version of the Arduino IDE.
Before I invest any more money in… Continue

Posted on June 30, 2009 at 6:30pm — 11 Comments

Comment Wall (5 comments)

At 6:05am on May 13, 2009, Max said…: Hi, nah ive given up for the moment, when I get some time ill throw it up and just see what happens... ill let you know the results :)

At 1:15pm on July 6, 2009, Jerry LeDrew said…: Hi Bryan....
The change work fine for me as well on a HP Desk-Top running XP- Sp3 .....

De Jerry ( VO1ET )

At 8:25pm on August 1, 2009, David Low said…: Hi Bryan,

The official released 2.2.3 doesn't work for me too.
And currently I am using the "I_Can_Fly" version uploaded by Jordi.
I make no changes on the source code except the "easystar.h" to change the gps protocol to EM406 and invert my roll and pitch

Cheers~

At 11:26am on October 9, 2009, hiflyer said…: just curious which airfoil you used for building your plane. Looks great, and its sound like it flies great too.

At 10:08am on November 10, 2009, Jesse Cho said…: Hi Bryan,

I'm a student doing some research for UAVs at Berkeley and I was wondering what type of material you used and how does your removable wings work... It would be great if you can let me know how.

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