EOSS-265 & 266 Recap

EOSS-265 with ten CU Gateway to Space Class payloads weighing 18.39 pounds, two GPS-equipped beacons, an Iridium tracker and a ten-foot parachute were launched on a 3000g balloon from the Windsor, CO launch site (N40° 30.29', W103° 48.58') at an elevation of 4969 feet at 6:49 AM MDT on Nov. 11, 2017.  The balloon burst at 8:12 AM at an altitude of 100,385 ft. after an ascent averaging 1150 ft./min.  The maximum recorded speed was 139 mph at 8:26 AM at an altitude of 38,381 ft.  The parachute and flight string touched down at 8:50 AM and were recovered at an elevation of 4156 ft. about 4.3 miles SE of Atwood, CO (N 40° 31.514', W 103° 11.50') after a flight of 2 hours 2 minutes.  The touchdown horizontal speed was 1 mph.  The straight line distance between launch and touchdown was 93 miles.

 

 

 

EOSS-266 with nine Colorado Space Grant Consortium payloads weighing 16.4 pounds, two GPS-equipped radio beacons, and a 10 ft. parachute were launched on a 3000g balloon from the Windsor, CO launch site (N 40 ° 28.40', W104° 57.74') at an elevation of 4969 feet at 7:06 AM MDT on Nov. 11, 2017.  The balloon burst at 8:36 AM at an altitude of 107,830 ft. after an ascent averaging 1189 ft./min.  The maximum recorded speed was 116 mph at 7:29 AM at an altitude of 35,234 ft.  The parachute and flight string touched down at 8:45 AM and were recovered at an elevation of 3937 ft. about 6.1 miles SE of Haxtun, CO (N 40° 34.719', W 102° 32.343') after a flight of 2 hours 39 minutes.  The touchdown horizontal speed was 5 mph.  The straight line distance between launch and touchdown was 128 miles.

EOSS Member Mileage Reimbursement EOSS 265 and 266 

 

 

Original Announcement: 

Update 11/10/2017 1730:  Updated all six payload plans with final weights and changed Digi to KC0D Bottoms. Two 3000g balloons carrying payloads for CU Gateway to Space and COSGC Demostats classes. The payload plan for that balloon is linked below. If cloud cover does not allow the flight of an heavy balloon, the payloads will be split into four 1500g exempt balloons, The exempt balloon payload plans are linked here:

The Fatton Stratoranch in Windsor, Colorado has been selected as the launch site for this flight. Directions to the launch site are available at this link. Please park close to the road because the field may be soft and muddy. If the predicted winds shift and the flight path enters DIA Class B airspace, the launch site will be moved to prevent this. Watch this website (especially in the three days before the flight) for any changes. If the weather prevents launch the following day (November 5th) has been identified as the weather backup date. That decision is usually made the night before the launch, so watch this website closely!Predictions can be viewed at www.eoss.org/predict. Find the appropriate flight number (EOSS-265 or 266) and the correct date. Then click on the data for the selected launch site. The GIF picture of the predicted flight path is most informative. The prediciton is updated daily at approximately 1:00pm. Check back daily. This website (TBD) contains a number of intersting links with predictions, observations, and links to monitor during the flight that show the location of the balloon.EOSS is always looking for local hams to IGATE the beacons off of the airwaves and put them on the internet. If you are able to provide this service, please click here and sign up.

Event Date: 
Saturday, November 11, 2017 (All day)
Flight Coordinator: 
Tom KE7KCK
Launch Site: 
Grid: 
Last Chance: 10,10 Test N40.000 W103.00 Ans: 41.3, 27.9
Flights: 

EOSS-265

Balloon Type: 
3000g Kaymont
Parachute: 
10ft Orange White with QR and Cutter
Beacons: 
FrequencyCallsignTypeNotes
145.600 MHzK0SCC-11APRS/DF/Cutter
144.340 MHzKC0D-12APRS/DFSlotted :00 and :30

EOSS-266

Balloon Type: 
3000g Kaymont
Parachute: 
10ft Orange with Cutter only
Beacons: 
FrequencyCallsignTypeNotes
145.600 MHzKE0BMV-11APRS/DF/Cutter
144.340 MHzKC0D-11APRS/DFSlotted :10 and :40
FrequencyList: 

Preflight Net:

  • 449.225 MHz RMHam Repeater (141.3 Hz Tone) 8 pm MDT preceding night
  • 146.940 MHz (103.5 HZ Tone) RMRL Repeater if the RMHAM machine is down
  • 146.640 MHz (100 Hz Tone) DRL will serve as a backup frequency

Recovery Operations:

  • 449.450 MHz RMRL (103.5 Hz Tone)
  • 449.225 MHz RMHAM ((141.3 Hz Tone)  Try this out!!!!
  • 446.100 MHz Balloon 1 Field Simplex
  • 446.150 MHz Balloon 2 Field Simplex
  • 446.200 MHz Balloon 3 Field Simplex (if needed)
  • 446.275 MHz Car to Car drive out
  • 146.550 MHz Backup field simplex

Launch Site Simplex: 446.050 MHz

HF - Possible ops: 7.235 LSB

Tactical Calls: 
TacticalCall SignNameNotes
AlphaWA0GEH, KC0DMarty, MarkEOSS 265, Tracker Coordination
BravoW9CN, NØJPSMike, JohnEOSS 265, Trackers
CharlieKBØYRZChris, JenEOSS 265, Trackers
DeltaK0SCC, NØIXStephen, DougEOSS 266, Launch, Tracker
EchoKD0SEMDaveLaunch, Tracker
FoxtrotK0LOBJim, JanaeEOSS 266, Launch, Tracker
GolfKE7KCKTomEOSS 266, Launch
HotelN7JJYGeorgeEOSS 265,Tracker, from Cheyenne
India
TangoKC0LJohnEOSS 266 Tracker from Texas
WhiskeyKD0RNYChrisCOSGC Director
TR Breakfast: 
Grid and tests same as last week. Breakfast at Country Kitchen in Ramada Inn, east of I-76. Tentative time 6:15, leave at 6:45. This is a very long flight, again over 140 miles, so please bring some chow and drinks. The long flight may mean that the trackers deploying from the launch site may not make it in time to the recovery site (except, of course, K0SCC). Trackers positioned downrange will bear the brunt of locating the payload whilst awaiting the launch teams and students. Prediction 6 miles south of Paoli, X=68.6, Y=63.8