http://balloon.pbwiki.com/ RecentChanges for balloon http://balloon.pbwiki.com/feedlogo.gif http://pbwiki.com/ PBwiki 3.7 support@pbwiki.com http://balloon.pbwiki.com/Transportation email.hidden@example.com (geekxx) geekxx edited Transportation Y
Y
geekxx
Piper Archer II
3
Not exactly
N
Not much
N
Y
N
Carpool
If you need a ride, please add yourself to this list. When you figure out who you are riding with, add the driver's name from the table above to the "Riding With" column below, and decrement the coorisponding "# of available seats" value above.
]]> Sat, 16 Feb 2008 23:40:22 +0000 mod http://balloon.pbwiki.com/FAAInfo email.hidden@example.com (bre) bre edited FAAInfo Part101providedtousfromtheFAA
ExternalinfoonPart101
ChyrelCheryl provided this web resource:
http://map.aeroplanner.com/mapping/route
http://map.aeroplanner.com/mapping/chart/smartchart.cfm
kittatas ATC 509 962 7523
moses lake office (ask for ATC number) 509 762 1367
]]> Wed, 11 Jul 2007 14:30:28 +0000 mod http://balloon.pbwiki.com/EasterEggHunt no.email.given@example.com (Anonymous) Anonymous reverted EasterEggHunt This isWe need help finding our payload! Place notes here.
Balloon Tracking
Here's our best prediction model based on the winds.. thanks xander!
http://balloon.pbwiki.com/f/Path%20of%20Ahab-prediction.kml
I've attached filtered GPS data on the ascent and descent. Help!
http://balloon.pbwiki.com/f/test.csv
KML file of balloon track waypoints:
processed_balloon_data.kml
I've merged our two tracking files to produce a ce]]> Thu, 26 Apr 2007 13:38:50 +0000 rev http://balloon.pbwiki.com/EasterEggHunt no.email.given@example.com (JonM) JonM edited EasterEggHunt Here's our best prediction model based on the winds.. thanks xander!
http://balloon.pbwiki.com/f/Path%20of%20Ahab-prediction.kml
Survey says: Further north than we looked originally.
Data
I've attached filtered GPS data on the ascent and descent. Help!
http://balloon.pbwiki.com/f/test.csv
]]> Wed, 18 Apr 2007 21:06:10 +0000 mod http://balloon.pbwiki.com/EasterEggHunt email.hidden@example.com (3ricj) 3ricj edited EasterEggHunt We need help finding our payload! Place notes here.
Balloon Tracking
Here's our best prediction model based on the winds.. thanks xander!
http://balloon.pbwiki.com/f/Path%20of%20Ahab-prediction.kml
I've attached filtered GPS data on the ascent and descent. Help!
http://balloon.pbwiki.com/f/test.csv
]]> Wed, 18 Apr 2007 20:46:23 +0000 mod http://balloon.pbwiki.com/f/Path+of+Ahab-prediction.kml email.hidden@example.com (3ricj) 3ricj uploaded Path of Ahab-prediction.kml]]> Wed, 18 Apr 2007 20:45:49 +0000 upl http://balloon.pbwiki.com/Transportation email.hidden@example.com (geekxx) geekxx edited Transportation trunk/hatchback
Y
geekxx
Ford Expedition
7 w/ backseat, 4 w/o, or 2 w LOTS of cargo space.
Y
Certifiable
Tons. Cargo area plus large roof cargo box.
N
Y
Y
geekxx
Piper Archer II
3
Not exactly
N
Not much
N
Y
N
Carpool
If you need a ride, please add yourself to this list. When you figure out who you are riding with, add the driver's name from the table above to the "Riding With" column below, and decrement the coorisponding "# of available seats" value above.
]]> Sun, 15 Apr 2007 12:29:47 +0000 mod http://balloon.pbwiki.com/CVS+Camera email.hidden@example.com (lucasw) lucasw edited CVS Camera About the camera
small, light, light (1.0 oz for just the camera with no case or battery), cheap ($20) "one time use" video camera. The idea is that once you fill up the internal flash, you bring it back to the store and have them "develop" it into a CD. People quickly discovered that it is extremely easy to hack these cameras and get the data off of them yourself, therefore eliminating the designed "one time use".
We are using a CVS camera pointed straight down to record the first 20 minutes (or so, until it runs out of space) of the launch.
Hacking the camera
]]> Sat, 14 Apr 2007 17:33:11 +0000 mod http://balloon.pbwiki.com/Recovery+System no.email.given@example.com (lucasw) lucasw edited Recovery System Recovery System
The primary recovery system is a parachute, attached on the top to the balloon harness and at the bottom to the payload harness. Swivels are used at each attachment point to prevent tangling and twisting oscillations during flight.
The parachute is 93 cm in diameter.
Parachutes
http://www.kaymont.com
]]> Sat, 14 Apr 2007 17:14:28 +0000 mod http://balloon.pbwiki.com/EasterEggHunt no.email.given@example.com (JonM) JonM edited EasterEggHunt We need help finding our payload! Place notes here.
Balloon Tracking
I've attached filtered GPS data on the ascent and descent. Help!
http://balloon.pbwiki.com/f/test.csv
Neato 3d google earth kml file:
http://balloon.pbwiki.com/f/Path%20of%20Ahab.kml
Balloon Search
Guess 1:
Ok, here are my results from calculations done last night on the data. I have two points to offer, both obtained from the same method using slightly different assumptions.
Search Point A: 47°40'24.24"N 119°45'57.60"W
Google KML Ahab Search.kml
The first point, Search Point A, is the point which carries a somewhat greater confidence. For both points it is likely that the estimated rate of descent was exaggerated and thus it's probable that the balloon is further out than these points indicate, however likely in the same direciton (see the colored areas). It's less likely that the balloon landed closer to the point where the payload was cut than indicated. (note, th]]> Sat, 14 Apr 2007 09:25:34 +0000 mod http://balloon.pbwiki.com/CameraWeightLossAndControl no.email.given@example.com (JonM) JonM edited CameraWeightLossAndControl One thing we don't want to do is tie either end of the push-button to adjacent cameras. If any of the cameras is powered off or fails then all of the cameras will be unable to take pictures- we confirmed this on the test bench.
The battery ground and the grounding 'planes' around the body of the camera are the same (0 ohms resistance between them).
What we ended up doing was using the trigger circuit to short the camera buttons once every 7 seconds. Diodes between the cameras kept crosstalk and interference down, and allowed the cameras to function if one died.
Field of View
The horizontal field of view of the Elph 450 is about 54 degrees. For a decent panorama we should have adjacent cameras overlap by a 2-4 degrees. With four cameras we can easily get a 180 degree panorama.
]]> Sat, 14 Apr 2007 08:23:41 +0000 mod http://balloon.pbwiki.com/Secondary+release+mechanism no.email.given@example.com (JonM) JonM edited Secondary release mechanism If all else fails, we need for the craft to return to earth no matter what. This device will automatically release the payload after a set period of time (probably 3 hours).
Mechanism
New method:
For the second AHAB launch, I made a circuit that would time and trigger the Nichrome directly. It was much lighter and ran off a single CR123 battery. Schematic and source code are at weak.org/ahab/trigger.
Old method:
A 4 inch length of 32 gauge Nichrome wire is wrapped tightly around the cord that connects the payload to the balloon. One end of the wire is connected to the positive terminal of a series pair of CR123 lithium batteries. The other end of the wire is connected to the collector of a TIP31 NPN transistor. The emitter of the transistor is wired to the negative terminal of the batteries.
The base of the transistor is wired to the positive speaker output of a kitchen timer (which runs off it's own AAA lithium battery). When the timer goes off, the transistor shorts the camera b]]> Sat, 14 Apr 2007 08:21:33 +0000 mod http://balloon.pbwiki.com/EasterEggHunt no.email.given@example.com (Anonymous) Anonymous edited EasterEggHunt http://balloon.pbwiki.com/f/full_balloon_track.csv
Raw data with additional "seconds offset" column.
http://balloo.pbwiki.com/f/full_balloon_track_wtimeoffset.csvhttp://balloon.pbwiki.com/f/full_balloon_track_wtimeoffset.csv
Neato 3d google earth kml file:
http://balloon.pbwiki.com/f/Path%20of%20Ahab.kml
]]> Wed, 11 Apr 2007 15:25:02 +0000 mod http://balloon.pbwiki.com/EasterEggHunt no.email.given@example.com (Anonymous) Anonymous edited EasterEggHunt payload! Place Place notes here.
I've attached filtered GPS data on the ascent and descent. Help! Help!
http://balloon.pbwiki.com/f/test.csv
KML file of balloon track waypoints:
Raw data:
http://balloon.pbwiki.com/f/full_balloon_track.csv
Raw data with additional "seconds offset" column.
http://balloo.pbwiki.com/f/full_balloon_track_wtimeoffset.csv
Neato 3d google earth kml file:
http://balloon.pbwiki.com/f/Path%20of%20Ahab.kml
data. I I have two points to offer, both obtained from the same method using slightly different assumptions.
Search Point A: 47°40'24.24"N 119°45'57.60"W 47°40'24.24"N 119°45'57.60"W
Search Point B: 47°39'45.36"N 47°39'45.36"N 119°46'51.60"W
Google KML Ahab Search.kml
confidence. For For both points it is likely that th]]> Wed, 11 Apr 2007 15:24:50 +0000 mod http://balloon.pbwiki.com/f/full_balloon_track_wtimeoffset.csv no.email.given@example.com (Anonymous) Anonymous uploaded full_balloon_track_wtimeoffset.csv]]> Wed, 11 Apr 2007 15:24:05 +0000 upl http://balloon.pbwiki.com/f/full_balloon_track.csv email.hidden@example.com (3ricj) 3ricj uploaded full_balloon_track.csv]]> Wed, 11 Apr 2007 12:29:01 +0000 upl http://balloon.pbwiki.com/full_balloon_track.csv email.hidden@example.com (3ricj) 3ricj removed full_balloon_track.csv]]> Wed, 11 Apr 2007 12:28:55 +0000 rm http://balloon.pbwiki.com/EasterEggHunt email.hidden@example.com (3ricj) 3ricj edited EasterEggHunt KML file of balloon track waypoints:
processed_balloon_data.kml
I've merged our two tracking files to produce a more complete dataset for the flight profile.
Raw data:
http://balloon.pbwiki.com/f/full_balloon_track.csv
Neato 3d google earth kml file:
http://balloon.pbwiki.com/f/Path%20of%20Ahab.kml
Ok, here are my results from calculations done last night on the data. I have two points to offer, both obtained from the same method using slightly different assumptions.
Search Point A: 47°40'24.24"N 119°45'57.60"W
]]> Wed, 11 Apr 2007 12:01:40 +0000 mod http://balloon.pbwiki.com/f/full_balloon_track.csv email.hidden@example.com (3ricj) 3ricj uploaded full_balloon_track.csv]]> Wed, 11 Apr 2007 12:00:27 +0000 upl http://balloon.pbwiki.com/f/Path+of+Ahab.kml email.hidden@example.com (3ricj) 3ricj uploaded Path of Ahab.kml]]> Wed, 11 Apr 2007 10:28:59 +0000 upl