Andy Geppert
  • Male
  • Blaine, MN
  • United States
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Studying Tornados with UAVs

Started this discussion. Last reply by Teejay Apr 19, 2010. 12 Replies

 

Andy Geppert's Page

Latest Activity

Andy Geppert commented on Chris Anderson's blog post Sparkfun AVC location announced, plus new DroneCon!
"Is there a sign-up for DroneCon? I'm planning to be there!"
May 9
Andy Geppert commented on Chris Anderson's blog post Sparkfun AVC location announced, plus new DroneCon!
"Yeah - this is exciting! Awesome stuff and I really appreciate the willingness to lead/teach from those who are masters of this craft."
Mar 23
Andy Geppert commented on Andreas M. Antonopoulos's blog post Developing code for the APM - Webinar (TODAY)
"Any plans to do another webinar like this in the near future? I missed this one, but would love to attend another one. Was this one recorded by chance? "
Jan 27
Andy Geppert commented on Mark Harrison's blog post Chris Anderson leaves Wired, goes to some startup
"Awesome! Awesome! Awesome! I am very excited for you Chris. What an adventure!"
Nov 2, 2012
Andy Geppert commented on Ted Van Slyck's blog post EPP FPV Wing Project
"You are definitely going in the right direction with your comments on the wider cord and different foil at the tip. I found my starting point was a little "off" based on some Reynolds number analysis, and ended up making those design…"
Oct 28, 2012
Andy Geppert commented on Ted Van Slyck's blog post EPP FPV Wing Project
"Great work so far! What calculations did you use to come up with the 2 degrees of washout? I'm working on a similar wing, that has not flown yet, but I was coming up with recommended washout in the range of 4 to 8 degrees with the MH60.…"
Oct 26, 2012
Andy Geppert commented on Andrew Rabbitt's photo
Thumbnail

HDwing3 - render 6

"Oh, and, that rendering of the flying with Andrew did is AWESOME! That is the direction I am pursuing as well."
Jun 14, 2012
Andy Geppert commented on Andrew Rabbitt's photo
Thumbnail

HDwing3 - render 6

"Google "flying wing design" and in the first page of results, you'll find several useful…"
Jun 14, 2012

Profile Information

About Me:
My brother and I are starting a project to take a small R/C glider to 100,000 feet with a helium balloon, drop it, and have it to return to the launch point autonomously. This is an ambitious project that we plan to take in with several smaller steps.

My picture profile is of the R/C trainer (Eagle II) I learned on... after the rubber bands holding the wing failed about 100 feet up. The fuselage beat the wing down by a good 20 seconds. I think it will make a fine testbed though after a little reconstructive surgery. Although a foam aircraft might be even more forgiving...
Tell us a bit about your UAV interest
sites.google.com/site/naviback/
Hometown:
Blaine, MN

Comment Wall (3 comments)

At 10:42pm on May 14, 2009,
3D Robotics
Jordi Muñoz
said…
Hey what happens if the airplane never release?
At 8:25pm on May 18, 2009, Andy Geppert said…
I believe I read that two methods of cut-away are required in the standard EOS amateur balloon launches. So, at a minimum, we'll need to do that. Both mechanisms will need to be tested to very low temperatures as well. Nichrome wire around the rope is common. But, to answer the question you posed Jordi, if it still doesn't release, we'll get to see how far it goes! I'd like to use two downlinks: one along the lines of XBee (short range and two-way), the other using packet via amateur radio so conceivably we could get position reports across the rest of the US if the batteries hold up. That is assuming we launch in the US one day. The regulations are another whole topic...
At 12:03pm on December 28, 2009,
Admin
Thomas J Coyle III
said…
Hey Andy,

How is the DPCAV 5.8 GHz transmitter/receiver effort coming along? Have you worked out the banding issue yet? I plan to test my setup this week.

Happy New Year,
TCIII

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