Recap of EOSS-88/89

LAUNCH DATE: 16-Apr-2005
LAUNCH TIME:

  • eoss-88 - 07:20 am MDT (13:20 UTC)
  • eoss-89 - 08:08 am MDT (14:08 UTC)

LAUNCH SITE: Windsor, CO (directions)

Pre-flight Prediction and Actual Track

Launch Site - Windsor
-----------------------
Launch Point: 40.4737� lat.   -104.9623� long.
Ascent Rate: 1100 feet per minute
Descent Rate: 910 feet per minute
Altitude: 4931 feet

EOSS-88

Blue = Actual Track
Green = Predicted Ascent Phase
Red = Predicted Descent Phase


Maps made with MapPoint
Prediction made with Balloon Track

Predicted Landing Site
-----------------------
Landing Point: 40.5486� lat.  -104.0357� long.
Altitude: 4500 feet
Flight Time: 125 Minutes
Bearing: 83.6� True
Range: 48.9 Mi.
Actual Landing Site
-----------------------
Landing Point: 40.4822� lat.  -104.0643� long.
Bearing: 89.0� True
Range: 47.2 Mi.
Difference from Predicted to Actual Landing Site
--------------------------------------------------
Bearing: 198.1� True
Range: 4.8 Mi.

 

EOSS-89

Blue = Actual Track
Green = Predicted Ascent Phase
Red = Predicted Descent Phase


Maps made with MapPoint
Prediction made with Balloon Track

Predicted Landing Site
-----------------------
Landing Point: 40.5486� lat.  -104.0357� long.
Altitude: 4500 feet
Flight Time: 125 Minutes
Bearing: 83.6� True
Range: 48.9 Mi.
Actual Landing Site
-----------------------
Landing Point: 40.4957� lat.  -104.0759� long.
Bearing: 87.8� True
Range: 46.6 Mi.
Difference from Predicted to Actual Landing Site
--------------------------------------------------
Bearing: 210.0� True
Range: 4.2 Mi.

 

EOSS Frequencies:

Global Frequencies

EOSS-088 Frequencies

  • Beacon
  • APRS
    • 144.340 MHz
    • 445.975 MHz
      • ID: K0YUK-11
      • Note: APRS was successfully repeated through the RMRL x-band repeater

EOSS-089 Frequencies

  • Beacon
    • 446.025  MHz
      • ID: K0ANI-11
      • Tone then CW ID
      • only a 10 second tone per minute for this test, packets once a minute
  • APRS
    • 147.555 MHz (primary)
      • ID: W0WYX
      • Packet burst on the output of the RMRL Crossband repeater
    • 446.025 MHz
  • Cross Band Repeater (no tones required)
    • Input: 445.975 MHz
    • Output: 147.555 MHz
    • Created and maintained by the Rocky Mountain Radio League
      • Glenn & Bob - Thanks for the recent tweaks on input squelch settings and sensitivity.

Flight Systems:

EOSS-088

Balloon Manufacturer Kaymont
Balloon Type latex
Balloon Size 3000 gram
Payload 24.9 lbs.
Free Lift % 13 %
29.0 lbs.
Ascent Rate 810.74 fpm calculated
Descent Rate  unknown ~ 1000 fpm (GPS failure)
Parachute 10 ft
Peak Altitude 87,998.36 ft ASL
Launch Conditions calm

EOSS-089

Balloon Manufacturer Kaymont
Balloon Type latex
Balloon Size 3000 gram
Payload 22.1 lbs.
Free Lift % 15%
24.6 lbs.
Ascent Rate 1038.30 fpm estimated
Descent Rate  1000 fpm @ 7500 ft ASL measured
Parachute 10 ft
Peak Altitude 102,650
Launch Conditions calm

 

Payload Configuration:

updated 12/Apr/05

Internet Gateway Stations:

as seen on Findu.Com

EOSS-088

For AE0SS-11

  • K0AEM-1 - Richard Beggs
  • K0YG-7 - Mark Patton
  • K0ANI-7 Larry Cerney
  • WA0VSL-6 Doug Wilson

for K0YUK-11

  • K0YG-7 - Mark Patton

EOSS-089

For W0WYX

  • K0YG-7 - Mark Patton
  • WA0VSL-4 Doug Wilson

For K0ANI-11

  • K0ANI-7 Larry Cerney from his home

EOSS wishes to express our sincere appreciation to the stations above who iGated the balloon APRS telemetry onto the internet.

We are relying heavily on real time position information available on the net to allow the FAA controllers to have up to the minute location data to assist them in air traffic control.

Redundant stations for the balloon iGating provide excellent coverage. If you are able to iGate we invite you to join the Internet Gateway Team. Contact me (webmaster@eoss.org) to be put in touch with the coordinator. By joining the team, you are giving peace of mind to the iGate coordinator for that flight. He knows you'll be there and he can rely on you.

Naturally, anyone can iGate data onto the net and even if you aren't a member of the team we will welcome your contribution to the internet based tracking effort. If you callsign appears on the findu.com log, you'll be shown as a contributing station as those above are.

Having more than one station covering each APRS beacon means that should a station drop out momentarily, the others maintain the data flow quite nicely.

Thanks again guys! The FAA (and EOSS) are very grateful for your assistance in this endeavor.

Future I-Gaters:

Check out the EOSS I-Gate page for information on how to participate and why we need you.

Current I-Gate Stations:

Guys, the prediction program used to determine the track of the balloon prior to flight can now output a prediction for the Rise, Closest Approach, and Set of the balloon for each of your stations. I have posted a prediction page for stations that I have been able to discover geographic coordinates. See the I-Gate prediction page for an example. The page will not be updated daily, however, it will be updated the evening prior to flight for I-gate planning purposes.

I have often been asked by iGaters when they should expect to either start receiving signals (AOS) or expect to see those signals disappear (LOS). This prediction page should answer all those questions for you.

Tracking and Recovery Info:

Help us build a database of the best RDF/Observation sites in Eastern Colorado. See the Observation Site Database page for ideas on what we'd like to see in this DB and if you're interested in the Balloon Track use of that database

EOSS Grid:

Grid for April 16, 2005

Location Grid X Grid Y
Intersection 71 and 14 (west) 65 45
Hudson 14 8
Nine Mile Corner 70 12.5
Rockport 6 65
Touchdown 50.7 44.6

Tactical Callsigns:

Valid for April 16th, 2005

Tactical Callsign Name Notes
Alpha WA0GEH Marty coordinator
Bravo N0NDM and W6AUN Larry and Perry  
Charlie K0JLZ and K0AEM Jim and Richard  
Delta KB0YRZ and K0ANN Chris and Ann  
Echo W0CBH and N5LPZ Benjie and Mike and Clint  
Foxtrot KC0RPS  and W0NFW Jim and George  
Golf K0LOB and KC0QHI Jim and Jackie  
Hotel K0SCC Steve and Whitney  
India N0LP Nick Ground Station

Recaps:

Photos:

Launch Site

Launch Site General

EOSS-088

Landing Sites

EOSS-088

EOSS-089

Airborne by CU students

Audio:

I'm afraid I forgot to record the output from the xband repeater. So, no audio from there this time out.

Here is the audio from the Rocky Mountain Radio League 449.450 MHz repeater which was used by the tracking and recovery team. Listening in sequence will essentially replay the repeater audio for the entire flight. The recorder was set to VOX so any long pauses with no audio were automatically eliminated. So, while all the audio is here, the time line is incorrect and somewhat compressed.

Data:

Text

EOSS-088

EOSS-089

Comma Delimited

EOSS-088 - AE0SS-11

EOSS-089 - W0WYX

Notes:

Our Customer

  • CU Gateways Balloon Sats
  • C-SMARTS

note: customers are welcome to submit detailed synopses of their flights or web links to their own web sites.

Radio Coverage:

  • Green, you should be able to work the payload systems.

  • Red, is the border of the received signal. Red appears jittery because it is depicted topographically. Thus, the red dots on the eastern half of the map but well within the maximum distance show hilly terrain behind (east) which reception is not possible.

This is a generic 95,000 ft ASL coverage map for flights that depart from the vicinity of Windsor, Colorado. Flight day coverage may vary depending on upper air winds.