"Very nice! Just one thought, if you fly it and realize that you have way too much yaw control with the current system, I think you should try just doing a DCP for the yaw, and using the tilt, at a much slower setting, for trimming the…"
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Sean Skirvin
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Sean Skirvin's Discussions
Tandem Rotor-craft
Started this discussion. Last reply by Sean Skirvin Oct 7, 2011. 2 Replies 1 Like
I am currently working on building a tandem rotor (chinook type) helicopter for use as a photography platform. Not too far along yet, I have 2 x trex450 clones on the way from China at the moment.…Continue
Tags: trex, mixing, channel, helicopter, chinook
$100,000 Darpa UAV Contest
Started this discussion. Last reply by Stephen Wuest Nov 10, 2011. 8 Replies 0 Likes
Just wondering if anyone else here was entered in the Darpa UAV contest. I am currently working with a few guys on a entry. Basically they want a VTOL uav that can fly 2 miles NLOS(non line of sight)…Continue
Sean Skirvin's Page
Latest Activity
Sean Skirvin commented on Gisela & Joe Noci's blog post A large scale Variable Pitch Tilt Quadrotor implementation.
Stephen Wuest replied to Sean Skirvin's discussion $100,000 Darpa UAV Contest"I agree with the comment that this is not a military UAV site.
I have reservations about the managerial efficiency of anything overseen by DARPA.
I have serious doubts that Boeing or Lockheed or the big aero boys have practical experience building…"
Sean Skirvin commented on trappy's blog post TBS Video Update"Excellent videos, good production value, and nice music too. You do some insane maneuvers my friend, I was on the edge of my seat a few times!
I am also interested in what kind of video/Tx/Rx system you are using."
Sean Skirvin replied to Sean Skirvin's discussion Tandem Rotor-craft"I was also thinking, instead of using collective differential for my pitch control, just using the elevators already on the SP and switching the orientation of the 450 bodies to facing each other, instead of facing away."
Alfred Riopel replied to Sean Skirvin's discussion Tandem Rotor-craft"Looking forward to following your build. keep us posted."
Sean Skirvin left a comment for Alfred Riopel"I started a individual thread for my questions about the tandem. Thanks for all your help thus far. I really like your coax too!
http://diydrones.com/forum/topics/tandem-rotor-craft"
Sean Skirvin posted a discussionTandem Rotor-craft
I am currently working on building a tandem rotor (chinook type) helicopter for use as a photography platform. Not too far along yet, I have 2 x trex450 clones on the way from China at the moment. I have some braided carbon tubes from Dragon Plate that I was going to use to connect the 450 bodies. After some helpful words from Mr. Riopel, I have decided to use one motor mounted in the middle to power both rotors. I'm not certain, but I'm considering using the tail belts from two…See More
Sean Skirvin replied to Alfred Riopel's discussion Feature request.: Coaxial Collective & differential collective yaw mixing in the group ArduCopter (traditional heli) user group"Wow, thanks! Quick question though, do you think it is required to mechanically connect the drive trains if I used a gyro and my rotors not overlapping?
As for needing help with the hierarchy, I'm not sure. Here is what…"
Sean Skirvin replied to Alfred Riopel's discussion Feature request.: Coaxial Collective & differential collective yaw mixing in the group ArduCopter (traditional heli) user group"I would also be very interested to see this as I am building a 450 tandem rotor. I was planning on doing external mixing but would much rather it be done in the APM. Also looking at getting the PhoneDrone board when it comes out and…"
Sean Skirvin commented on Jacob Eraklidis's blog post My UAVforge submission"I wasn't trying to be overly negative, or say that it can't work. I was just saying it is not the most inherently stable VTOL platform. Also, if you can find someone that makes a VP EDF, I would be very interested to play with…"
Sean Skirvin commented on Jacob Eraklidis's blog post My UAVforge submission"True, the Saturn V did that, like other rockets, but a 6 million pound rocket is going to be affected by the crosswind less (density/shape) and more slowly (inertia) than a 6 pound uas. "
Sean Skirvin replied to Ihab Ali's discussion Flash Demo for new control rules"Not me, I barley understood the old rules!"
Sean Skirvin replied to Ajit Krisshna's discussion How to swivel a quad?"If you want a quick start, download the APM or ACM software from this site and load it with ArduinoIDE http://arduino.cc/en/Main/Software and start looking through the code. I have little/no experience coding so much of it was confusing to me, but…"
Sean Skirvin replied to Ajit Krisshna's discussion How to swivel a quad?"Two words, "reverse engineer". Even though you want to make your AP from scratch, I would STRONGLY recommend buying one (open source based) first, to get a handle of how these things function. No offence, buy your use of the…"
Sean Skirvin commented on Jacob Eraklidis's blog post My UAVforge submission"Nice animation. I agree with Alex about the EDFs, and would also add that they are quite loud, and I know sound mitigation is one of the things they were looking for. EDFs also tend to have a high pitch, which can cause turbulence…"
Profile Information
- About Me:
- Background in wind turbine/composite development and manufacturing .
- Tell us a bit about your UAV interest
- Always been interested in building things.
- Hometown:
- Bowling Green
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Contests
Season Two of the Trust Time Trial (T3) Contest has now begun. The third round was a reliablilty/aerial photography round for both planes and copters, which is now closed. Stay tuned for the next round, beginning soon.A list of all T3 contests is here.
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