Overview
Student in Physical Science Research I at the Bronx High School of Science
2016 Cubes in Space selected project
Bronx, NY
September 2016-June 2017
Design
My team developed a method to use bellows as an airtight seal to trap CO2 from the upper atmosphere
I created a CAD model of my team's cube in SketchUp
The payload was designed to determine whether a small, simple device would be able to measure CO₂ in the upper atmosphere, without being contaminated by CO₂ from lower altitudes. Brass bellows, after testing in a bell jar, were used as a seal for a hole in the top of the cube, and CO₂ indicator strips were placed inside the experimental cube to detect CO₂.
At ground pressure, the bellows fully covered the hole, preventing CO₂ from entering the cube. When the cube was elevated into the low pressure of the atmosphere, the blocks separated and allowed the CO₂ indicator strips to accurately measure CO₂ in the atmosphere. When the cube was brought back down to the higher pressure earth, the blocks pushed together and resealed the cube from CO₂. Important techniques used in this experiment were 3D printing, CAD, and soldering.
Testing
We tested the bellows in a bell jar to determine how they expanded and contracted under pressure differences
The final cube design
Launch!
The cubes were launched from on a high altitude balloon from the NASA Columbia Scientific Balloon Facility in Fort Sumner, New Mexico.
Cubes in Space
The balloon payload ready for launch
Cubes in Space
All of the cubes stored in the payload
Cubes in Space
The high altitude balloon launching from New Mexico