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BASE 40 Flight October 8, 2009 |
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Written by Administrator
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Friday, 09 October 2009 09:19 |
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BASE 40 was successfully completed today.
Launch was about 8 minutes late in a light rain.
Launch at 1218 UTC from southwest corner of track around football field. Had good visual of the ascent for nearly ten minutes.
Burst at 88000 feet at 1319 UTC (average ascent speed of 1440 ft/min). Occurred over the southwest corner of Greenfield, IN.
At 62000 feet at 1323 UTC a catastrophic event occurred during post-burst chaos. The APRS unit remained attached to the parachute, but one of the swivel connectors opened and the remaining string was cut by the carbon fiber tube released the 900 MHZ command pod, DominoEX, geiger counters, video cameras, and photometers. With no chute, these boxes landed in a field southwest of Knightstown and northwest of Carthage, IN. Impact occurred at 1334 UTC and the flight data recorder indicated a speed of about 48 miles/hour 200 feet above the ground. Maximum descent speeds in the free fall reached 120 miles/hour.
With the reduced load, the parachute and APRS unit landed east of Richmond, IN at 1410 UTC in a soybean field about 2.5 miles east of the Indiana-Ohio state line between US 35 and I-70.
I will examine the video for additional details on the separation event. This initial analysis comes from flight data and analysis of the payload strings.
Thanks again for your support,
Howard
P.S. - I know that Bill Brown would appreciate any feedback from those that attempted to receive the Domino EX signal.
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BASE 34 Flight March 12, 2009 |
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Written by Administrator
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Monday, 16 March 2009 11:53 |
BASE 34 was successfully completed today.
Launch: 13:52 UTC from DePauw
Burst: 15:20 UTC at 103,800 feet
Landing: 16:12 UTC between Potsdam and Laura, Ohio (39deg 58.78 min North, 84 deg 24.77 min West)
We had a visual sighting on the descent for the last two minutes. Smooth landing in the top of four trees about 60 feet above the ground. Retrieval was accomplished with the EZ Hang slingshot system using the tennis ball as the projectile. (Only took 4 attempts, with the first two being miserable failures due to operator error by me.)
The StratoStar system sent all the flight data to the mobile tracking station in real time.
Landing support from Ron, N9QGS, and Justin,W1IX.
Additional details will follow on www.depauw.edu/acad/physics/base
Howard |
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Last Updated on Monday, 16 March 2009 11:57 |
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BASE 32 Flight January 13, 2009 |
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Written by Administrator
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Thursday, 15 January 2009 17:01 |
The BASE 32 flight was a success. Launch at 16:20 UTC from DePauw campus (39.64
North, 86.86 West) by a rookie crew in 20 mph winds. Average ascent rate of 1470
feet/min. Burst at 17:18 UTC 85,000 feet. Landing at 18:02 UTC at 39.774
degrees North and 85.055 degrees West longitude. Flight heading 84 degrees from
launch to landing. Great circle distance 97 miles.
Recovery made by Justin Munger, W1IX.
Excellent realtime flight data from student experiments.
Details to follow on the website: www.depauw.edu/acad/physics/base
BASE 33 is still on schedule for Saturday 17 January.
Howard
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