Changes

| header = SSI-28

| header = SSI-28

| img link = File:ssi_28.png

| img link = File:ssi_28.png

| launch date = January 30, 2016, 10:42:58

| launch date = January 30, 2016, 10:42:58

| launch site = 2093 San Juan Drive, Hollister, CA

| launch site = 2093 San Juan Drive, Hollister, CA

}}

}}

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.  

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 powering heaters and capturing visuals with a camera.  

== Pre-Launch ==

== Pre-Launch ==

[[File:SSI_28_03.jpg | left | thumb | <center> The team</center>]]

[[File:SSI_28_03.jpg | left | thumb | <center> The team</center>]]

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]].

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.

== Payload Specifications ==

== Payload Specifications ==

[[File:SSI_28_05.jpg | right | thumb| <center> The Teensy electronics </center>]]

[[File:SSI_28_05.jpg | right | thumb| <center> The Teensy electronics </center>]]

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.  

This payload utilized a Teensy3.2 instead of an Arduino, allowing for better computational power, more memory, 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 ==

== Launch site ==

[[File:SSI_28_02.jpg | left | thumb| <center> The launch site </center>]]

[[File:SSI_28_02.jpg | left | thumb| <center> The launch site </center>]]

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.  

SSI-28 was launched from a park near 2093 San Juan Drive, Hollister, CA at 10:42AM. The team left campus at 5:30AM, had no issues on site, and returned to campus at 9:00PM.  

== The Flight ==

== The Flight ==

[[File:SSI_28_04.png | right | thumb| <center> 24Km view</center>]]

[[File:SSI_28_04.png | right | thumb| <center> 24Km view</center>]]

[[File:SSI_28_01.png | right| thumb| <center> Ground track </center>]]

[[File:SSI_28_01.png | right | thumb| <center> Ground track </center>]]

[[File:SSI_28_07.png | right | thumb| <center> Altitude </center>]]

SSI-28 was outfitted with a balloon with about .5 net Kg of lift.  

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.  

Because of high winds, the balloon drifted farther than expected, traveling 169.8 kilometers away.  

== Debriefing ==

== Debriefing ==

SSI-28 was a success and fulfilled all of the initial goals set out by the team.  

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 data collection and logging of [[Project UV]] data

*Successful data collection and logging of [[Project X]] data

*Successful implementation of a heater control mechanism

*Successful implementation of a heater control mechanism

*Successful landing and recovery

*Successful landing and recovery

File:SSI_28_02.jpg | <center> The launch site </center>

File:SSI_28_02.jpg | <center> The launch site </center>

File:SSI_28_00.png | <center> Popped Balloon</center>

File:SSI_28_00.png | <center> Popped Balloon</center>

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[[Category: High Altitude Balloons]][[Category: Balloon Launches]]

[[Category: High Altitude Balloons]][[Category: Balloon Launches]]