Recap of EOSS-61

LAUNCH DATE: November 16, 2002
LAUNCH TIME: 08:47 am MST, 15:47 UTC
LAUNCH SITE: Windsor (directions)


Track vs. Prediction:

Green = Actual Flight Track
Purple = predicted ascent
Red = predicted descent

Recap Info

Launch Site - Windsor
-----------------------
Launch Point: 40.4737� lat.   -104.9635� long.
Grid: X=-41.3 Y=103.2
Ascent Rate: 1100 feet per minute
Descent Rate: 1350 feet per minute
Altitude: 5020 feet
Predicted Landing Site
-----------------------
Landing Point: 39.3245� lat.  -103.8632� long.
Grid: X=16.8 Y=23.8
Altitude: 6500 feet
Flight Time: 109 Minutes
Bearing: 143.3� True
Range: 98.5 Mi.
Actual Landing Site
-----------------------
Landing Point: 39.2954� lat.  -103.7723� long.
Grid: X=21.6 Y=21.8
Bearing: 141.8� True
Range: 103.0 Mi.
Difference from Predicted to Actual Landing Site
--------------------------------------------------
Bearing: 112.5� True
Range: 5.3 Mi.

all values are predicted except for the last two entries

 


Flight System:

Balloon Manufacturer Kaysam
Balloon Type Rubber
Balloon Size 1200 g
Nozzle Lift 18.3 lbs
Free Lift % 25%
Ascent Rate 1024.3 fpm (calculated)
Descent Rate -1200.0 fpm avg. below 10K ft.
Peak Altitude 91,598 ft
Launch Conditions Calm

 


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

Frequencies:

  • HF Net during Flight
    • 7176 KHz (see notes about this freq)
    •  starting at 15:15 UTC (8:15am MDT)
  • APRS
    • 445.975 MHz
    • ID: W5VSI-11
  • Beacon
    • 145.600 MHz
  • ATV
    • 426.250 MHz (AM)
  • Tracking and Recovery Operations
    • 449.450 MHz 103.5 Hz tone RMRL Repeater
    • 146.550 MHz simplex (same simplex for field and launch ops)
    • 449.425 MHz KA0ULN mobile repeater
      • 123 Hz tone required
      • Standard offset
  • Simplex at Launch Site
    • 146.550 MHz (same simplex for field and launch ops)

Payload Train Graphic


Charts:


Data Files:

Text Files

Spread Sheet Files


Tracking and Recovery
Grid Placement:

  • Highway 24/highway 71 near Limon, the dot just west of Limon is 25,20
  • Last Chance is 31,52.5
  • Ramps on to freeway I-70 for Arriba is 48,21
  • Matheson is 10,14
  • Landing X=14.3 Y=17.3

Experiments:


Radio Coverage for EOSS-60 Cross Band Repeater

Coverage at 95,000 feet ASL

Light Green - (good packet reception) APRS
Red - The 0.40 uV threshold - voice may be possible outside of this zone but will be noisy

This plot generated by Radio Mobile