EOSS- 281/282 CU Boulder Gateway to Space and DemoSats - Recap

EOSS-281 with ten student Gateway to Space payloads weighting 17.64 pounds, two GPS-equipped radio beacons, and a 10 ft. parachute was launched on a 3000 gram balloon from the Eaton Middle School at the Eaton, CO launch site (N40° 31.75', 104° 43.41') at an elevation of 4963 feet at 06:40 AM MST on Nov. 10, 2018.  Air temperature at launch time was 18°.  The last packet received before balloon burst was at 8:15 AM at an altitude of 109,250 ft. after an ascent averaging 1106 ft./min*.  Both the burst altitude and ascent rate were above average for a 3000g balloon.  The maximum recorded speed was 102 mph at 7:16 AM at an altitude of 42,517 ft. on ascent.  The parachute and flight string touched down at 8:58 AM at N40° 31.59', W104° 43.40' and were recovered at an elevation of 4,842 ft. after a flight lasting 2 hr. and 17.5 min.  The straight line distance between the launch site and touchdown point was 88 miles.  The touchdown point was about 6 miles southeast of the town of Akron, CO (N° 45.93', W102° 47.64').  The flight string touched down with a vertical speed of 529 ft/min and a horizontal speed of 10 miles per hour.

 * The burst altitude of this flight was higher that we've seen in awhile -- a record?  Checking with Rick NØKKZ he pointed us to data he complied on EOSS-99 which flew on Oct. 22, 2005.  It reached at altiude of 113,953 ft.  The flight was specifically flown to try and set a record and used a 3000g balloon and a total payload weight of 5 lbs.  Here's a link:

     http://www.n0kkz.com/oldeoss/ansrecap/ar_100/recap99.htm

and the packet

     "K0ANI-11>BEACON,WIDE1-1,qAS,K0UT:@164028h3954.02N/10409.31WO093/043/A=113953 Ft."  

EOSS-282 with ten student Colorado Space Grant DemoSats payloads weighting 17.64 pounds, two GPS-equipped radio beacons, and a 12 ft. Rocketman parachute was launched on a 3000 gram balloon from the Eaton Midlde School at the in Eaton, CO launch site (N40° 31.75', 104° 43.41') at an elevation of 4963 feet at 06:59 AM MST on Nov. 10, 2018.  Air temperature at launch time was 18°.    The maximum recorded speed was 99 mph which occurred at 7:30 AM at an altitude of 40,048 ft. on ascent and at 9:09 AM at 42,480 ft. on descent.  The parachute and flight string touched down at 9:36AM at N40° 0.69', W102° 53.42' and were recovered at an elevation of 5,036 ft. after a flight lasting 2 hr. and 37 min.  The straight line distance between the launch site and touchdown point was 103 miles.  The touchdown point was about 20 miles southeast of the town of Akron, CO (N° 45.93', W102° 47.64').  The flight string touched down with a vertical speed of 1012 ft/min and a horizontal speed of 14 miles per hour.

 EOSS Mileage Link: https://goo.gl/forms/1P2ZxeN5YDLFLeoA2   Note to EOSS members: this mileage link is now generic. If you cannot find it for an eligible flight, find the link from a recent flight and use that.