Balloon Collaboration
December 10, 2019, 10:35:29 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: DaddyB, Larry and Dan are your administrators...Private message for any problems or issues with the Forum//barntekadmin
 
   Home   Help Search gallery Calendar Login Register  
Pages: [1]
  Print  
Author Topic: Sun tracker for the balloon  (Read 2230 times)
Dan
Administrator
Full Member
*****
Posts: 175



View Profile
« on: September 25, 2009, 02:26:58 PM »

While it's not technically a 'sun tracking' application, could you rig the sensitivity on the sensors that you are using to operate a cut-down for the balloon?  We've been trying to figure out ways to know when the balloon actually bursts...Since the sensor operates on the amount of light it receives, and since that big ole white balloon reflects a LOT of light (just look at the UP pics for 2009), wouldn't a sudden and sustained decrease in light levels indicate the balloon was no longer there?  Just a thought...
Logged
DaddyB
Administrator
Full Member
*****
Posts: 144



View Profile
« Reply #1 on: September 25, 2009, 03:47:27 PM »

That could be the answer.  Probably need to run a test experiment on next flight before we committed to use it.
My first thought was to delay startup because the balloon is relativly small, and the reflected light may be low, but the low altitude sky may be bright enough to hold off the cut-down signal.
The unit could be built with a data recorder or transmit it directly to the ground.  Either way, we would need to study the data to see if there was enough difference in light levels to reliably trigger the cut-down device.

Very Interesting....   Huh
Logged
Dan
Administrator
Full Member
*****
Posts: 175



View Profile
« Reply #2 on: October 27, 2009, 12:42:09 AM »

Spray paint the inside of the parachute black.. hehe
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!