| SSI-28 | ||||
|---|---|---|---|---|
| 250px | ||||
| Launch date | January 30, 2016, 10:42:58 | |||
| Launch site | 2093 San Juan Drive, Hollister, CA | |||
| Launch coordinates | 36.84857,-121.43262 | |||
| Flight duration | 2:35:19 | |||
| Landing coordinates | 36.51287,-119.57532 | |||
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SSI-28 was the 28th launch of the SSI Balloons team and the first launch for the experimental payloads of Project_UV and Project_X. It flew 169.8 kilometers over a course of 2.5 hours, reaching an altitude of 24 Kilometers before landing. It was a complete success, querying ultraviolet A and ultraviolet B concentrations in correlation with altitude, and the concentrations of specific gasses at different altitudes, in addition to logging data, powering heaters, and capturing visuals with a camera.
Pre-Launch
SSI-28 was part of a combined experimental balloon launch with Project_UV and Project_X designed to provide preliminary data for these research projects. Most of the payload design, construction, coding, and wiring was done by Project_UV.
Payload Specifications
This payload utilized a Teensy3.2 instead of an Arduino, allowing faster computations, and more sensor readings at a higher resolution. The teensy measured time, altitude, UV(A) & UV(B) in watts/cm^2, and gas concentrations of Hydrogen, Methane, Carbon Dioxide, Carbon Monoxide, Ozone, and particulate matter. It was also capable of self regulating its temperature, and writing data to an SD card.
Launch site
SSI-23 was launched from a park near 2093 San Juan Drive, Hollister, CA at 10:42AM. The team left campus at 5:30AM, and was was ready to launch, as the electronics, code, and mechanics had been tested previously.
The Flight
SSI-28 was outfitted with a balloon with about .5 net Kg of lift. Because of high winds, the balloon drifted farther than expected traveling 169.8 kilometers away.
Debriefing
SSI-28 was a success and fulfilled all of the initial goals set out by the team.
- Successful data collection and logging of Project_UV and Project_X data
- Successful implementation of a heater control mechanism
- Successful landing and recovery
Gallery
24Km view 
The team 
Ground track 
The Teensy electronics 
The retrieved payload 
The launch site 
Popped Balloon
| Balloon Launches | |
|---|---|
| 2014-15 | SSI-19 • 20 • 21 • 22 |
| 2015-16 | SSI-23(a) • 24 • 25 • 26 • 27 • 28 • 29 • 30 • 31 • 32 • 33 • 34 • 35 • 36 • 37 • 38 • 39 • 40 • 41 • 42 • 43 |
| 2016-17 | 44 • 45 • 46 • 47 • 48 • 49 • 50 • 51 • 52 |
| 2017-18 | |
| 2018-19 | 83 • 86 • 87 • 90 • 91 |
| 2019-20 | 92 • 93 • 97 |
| V • E | |