Sean Headrick
  • Male
  • San Jose, CA
  • United States
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Sean Headrick's Groups

Sean Headrick's Discussions

Trying to incorporate a delay between landing and takeoff for water sensor application.

Started this discussion. Last reply by Graham Dyer Feb 18, 2014. 9 Replies

Hi All,  I posted this over in ArduCopter User Group and got a few helpful responses but am still not havingsuccess. My goal is to land at specific way points around a body of water, like a lake for…Continue

 

Sean Headrick's Page

Latest Activity

Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"The large shrouds create a substantial surface area which is effected by air flow and wind.  With the extra power of two motor/props in each shroud it should fly better plus less weight per motor when doubled up.  One of the things I…"
Feb 9
Sean Headrick replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Relative to its predecessor (Mk 09 non ducted)  at the same angle the speed was much greater. Haven't tested in significant wind, but I suspect from initial tests wind drag is going to present a factor to be considered. How much is yet to…"
Feb 9
Sean Headrick replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"i sould have described it as a dual motor setup as opposed to coaxial. The ducts are designed to hold either one or two motors. I had been interested in trying out some of those coaxial motors when I saw them start to be available. Do they operate…"
Feb 9
Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I have done a lot of experimenting "proof of concept" with coax counter rotating motor/props with really great results.  I have used some off the shelf motors and converted some pancake motors.  I think they would…"
Feb 9
Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I noticed in your video the aircraft seems to have a greater angle or pitch when in forward flight, I noticed the same thing in my testing.  I also notice the effects of the wind were greater then when flown without a shroud, mine was…"
Feb 9
Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I like the term "proof of concept" so much of the theory applied seems to get lost in actual flying.  I made a test stand to test different components and found the results differed from actual flying conditions.  Test stand a…"
Feb 9
Sean Headrick replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"we won't attempt to quantify the gains in efficiency until the 2nd version of the ducts are complete. The first were a proof of concept, but the resin content was relatively high so it was clear a better production method be developed to reduce…"
Feb 9

Moderator
Bill Piedra replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Cool - is that the 'lady gaga copter' ? "
Feb 9

Moderator
Bill Piedra replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Please let me know when the full aircraft will be available.  "
Feb 9
Sean Headrick replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I found there were a few issues that were resolved to some extent by replacing all the avionics (pixhawk, power module) after the first maiden. So this was actually the second flight. I think there were some issues with some of the hardware in the…"
Feb 9

Moderator
Bill Piedra replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Great video.  Seemed very stable for a maiden flight.   I have wanted to try to build my own ducting for a while now, but I have no experience fabricating carbon fiber parts.  I was going to try to cut the duct shape out of foam and…"
Feb 8
Sean Headrick replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Thanks Bill,   We have been working on this design for several months and the processes of manufacturing the duct that was light weight, but able to hold its shape under the stresses encountered during flight with the propeller tolerance…"
Feb 8

Moderator
Bill Piedra replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Wow that's a great project.  How were you able to mold the ducts from carbon fiber?  "
Feb 8
Sean Headrick replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I am replacing the controller to start with. I have always had great success with AC and the hardware. Pixhawk seems to me to be a very robust reliable controller and the Channel 6 tuning allows for the "in flight" adjustment of each PID…"
Feb 4
Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I found that my ducted fans are more stable with lower settings.  I went to a controller with the capability to adjust gain from the transmitter while in flight, cuts down on trial and error.  Just increase or decrease gain with…"
Feb 4
Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I find your work very exciting, I haven't seen anyone else take the time, effort and expense to develop outside the box.  It appears that you must have a CNC router to make the quality parts, I used mine to make a power…"
Feb 4

Profile Information

About Me:
I have been a cabinet and furniture designer for about the past 15 years. My wife and moved out to the west coast about 5 years ago. I got into RC with a coax about two years ago and found the ArduCopter project page a year later. There was no turning back.
Please tell us a bit about your UAV interest
I am fascinated with the coming together of electronics and mechanics that make a multirotor possible. Add in the autonomous ability to perform tasks and take action opens up worlds of possibilities.
Hometown:
San Jose

Sean Headrick's Blog

Drones, Robotic Rovers and Citizen Scientists Join Forces to Sample a Lake’s Biodiversity

Posted on March 2, 2014 at 12:43am 0 Comments

  About a year ago I first saw Ken McGary of Nerds for Nature present on the potential use cases for sUAV and ecological sensor data collection.

.Last weekend we ran the first in a series of tests to explore the feasibility of using UAV to test water quality. Over the past month or so this has gone from some drawings on a napkin to a proof of concept that performed near perfectly last weekend at a bioblitz at…

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HUGO's Multi Rotor Prop Guards. What is the best approach?

Posted on July 8, 2013 at 8:00am 9 Comments

 

I have been working recently with the Robotics Association at Embry-Riddle Aeronautical University to provide the multi-rotor component of their 2013 Roboboat competition.…

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HUGO flight tests with new GPS Decibal readings, Loiter, Stabilise

Posted on January 25, 2013 at 7:30am 8 Comments

I started  to document some flights wth HUGO this week . Here is some footage of "loiter" and "stabilise" flight modes.Also took some decibal readings from approx. 10' to 1.5'. The dB level never exceeded 95 dB. This is not a scientific test. I hope to show a comparison with open frame as a control and get some proper testing procedures in place. 

  I have been using a single axis gimbal for FPV ,…

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Comment Wall (1 comment)

At 11:49am on October 23, 2013, William "Tesla" said…

Hi Sean

 Thanks for joining our group. Very nice quadcopters you have, they look robust and very clean. Feel free to ask me any questions you might have. Here are some specs on our heli autopilot which is capable of running various multirotor applications.

http://www.micropilot.com/products-mp2128heli-specs.htm

 

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