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

Mike Dewhirst replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Thanks very much for the detailed answer Ed! I assume mounting props using this set up where the props have a pretty much uninterrupted air flow between them is better than putting one motor and prop on top of the motor arm mount and the other…"
Dec 1, 2015
Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I did it because it was a challenge and fun and I am pleased with the results.  Very smooth when done properly and a great platform for Cinema and filming. I did a number of designs, the best results has a bearing between the upper…"
Nov 30, 2015
Ed Kirk replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"I was using a Multiwii Paris, I don't remember exactly how I did the mid flight gain adjustments.  I was doing a lot of stuff with the 3DR tx-rx, back then. Ed"
Nov 30, 2015
Mike Dewhirst replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Hi Sean, sorry for the ignorance - who do you mean when you say "AC" - did you mean 3DR?"
Nov 30, 2015
Mike Dewhirst replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Hi Ed, which controller did you use that allows gain adjustment mid flight?"
Nov 30, 2015
Mike Dewhirst replied to Sean Headrick's discussion Problems with Ducted fan design with standard PIDs in the group ArduCopter User Group
"Very interesting! Did you see a noticeable improvement in performance and/or efficiency when running in contra-rotating mode? Did you just feed the shaft of the bottom motor through the middle of the top motor? BTW did you play much with different…"
Nov 30, 2015
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, 2015
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, 2015
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, 2015
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, 2015
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, 2015
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, 2015
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, 2015

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, 2015

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, 2015
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, 2015

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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