Recap of EOSS-71

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Launch Site - Deer Trail
-----------------------
   Launch Point: 39.6114° lat.   -104.0426° long.
    Ascent Rate: 1200 feet per minute
   Descent Rate: 915 feet per minute
       Altitude: 5205 feet

Predicted Landing Site
-----------------------
  Landing Point: 39.1975° lat.  -103.7504° long.
       Altitude: 4501 feet
    Flight Time: 116 Minutes
        Bearing: 151.3° True
          Range: 32.6 Mi.

Actual Landing Site
-----------------------
  Landing Point: 39.205° lat.  -104.045° long.
        Bearing: 180.3° True
          Range: 28.1 Mi.

Difference from Predicted to Actual Landing Site
--------------------------------------------------
        Bearing: 272.0° True
          Range: 15.8 Mi.

Post Burst Predicted Landing Site
-----------------------
  Landing Point: 39.1975° lat.  -103.7504° long.
           Grid: X=22.2 Y=33.8
       Altitude: 4501 feet
    Flight Time: 116 Minutes
        Bearing: 151.3° True
          Range: 32.6 Mi.

Difference from Post Burst Predicted to Actual Landing Site
--------------------------------------------------
        Bearing: 340.7° True
          Range: .4 Mi.

note: I won't be posting this for each flight but I thought I'd show off the new capability in Balloon Track to make predictions at any time during a flight INCLUDING anytime during descent. The Post Burst Prediction above was made while the balloon was descending through 9,000 feet (4,500 AGL). This feature yields very accurate results. Another new feature, Balloon Track can beacon this text out on a KPC3 Plus TNC. Trackers in the field seemed to like it. The beacons were digipeated through the balloon itself making it very easy for them all to receive, if they were so equipped.

Thanks to Michael Gray, KD7LMO  of Arizona Near Space Research for prompting me to add this feature. KD7LMO's implementation is much better in that it is totally automated and is actually RUNNING onboard their flight computer up there with the balloon payloads. But, even if we do all the number crunching on the ground instead of the more elegant airborne model Michael uses, it gets the job done.

LAUNCH DATE: August 2, 2003
LAUNCH TIME: 07:23 am MST, 13:23 UTC
LAUNCH SITE: Deer Trail (directions)

If an EOSS payload is highlighted, there is a link to an information page about that payload.

EOSS Frequencies:

• Preflight Net:
  • 147.225 MHz 8 pm MDT preceding Friday night
    • 145.160 MHz simulcast in the Springs
  • 146.640 MHz will serve as a backup frequency
• APRS
  • 144.340 MHz
    • ID = W5VSI-11
• Beacon
  • 147.555 MHz
• Tracking and Recovery Operations
  • 448.450 MHz 100 Hz tone (primary EOSS T&R Repeater) Pikes Peak FM Association
  • 146.550 MHz simplex (same simplex for field and launch ops)
• HF Net during Flight (see notes below)
  • 7228 KHz
  •  starting at 12:15 UTC (6:15am MST)

Flight Systems:

See NOTES below regarding payload train configuration

Payload Configuration:

• Payload_Plan_71.pdf

Data Files:

Text file (compiled from Ground station, Findu.Com, TNC's onboard data)

• W5VSI-11

Spread Sheet Files

• W5VSI-11