Cite

Figure 1

HAB assembled design (left) showing the balloon, parachute, payload box, and radar reflector strung together; payload box design (right) with top view, left view, front view, and exploded orthographic projection.
HAB assembled design (left) showing the balloon, parachute, payload box, and radar reflector strung together; payload box design (right) with top view, left view, front view, and exploded orthographic projection.

Figure 2

Circuit wiring schematic showing (A) Arduino Uno microcontroller; (B) altimeter module MS5607; (C) 100 nF capacitor; (D) two 4.7 kΩ resistors; (E) four colored LEDs, each connected in series with a 1 kΩ resistor; (F) two L293D H-bridges; and (G) Actuonix L12-R micro linear servos. This circuit controls the flight computer system, such as sensors and actuation mechanisms within the payload.
Circuit wiring schematic showing (A) Arduino Uno microcontroller; (B) altimeter module MS5607; (C) 100 nF capacitor; (D) two 4.7 kΩ resistors; (E) four colored LEDs, each connected in series with a 1 kΩ resistor; (F) two L293D H-bridges; and (G) Actuonix L12-R micro linear servos. This circuit controls the flight computer system, such as sensors and actuation mechanisms within the payload.

Figure 3

Flight trajectories for SHAB-1 (red) and SHAB-2 (blue), as reported by APRS telemetry. CUSF- predicted landing zones (circle) are compared to actual landing sites (triangle). (Map: ArcGIS).
Flight trajectories for SHAB-1 (red) and SHAB-2 (blue), as reported by APRS telemetry. CUSF- predicted landing zones (circle) are compared to actual landing sites (triangle). (Map: ArcGIS).

Figure 4

Photo of payload (A), BST with attached coupons and filter paper (B), BST assembly computer aided design (CAD) (C).
Photo of payload (A), BST with attached coupons and filter paper (B), BST assembly computer aided design (CAD) (C).

Figure 5

Altitude as measured by onboard pressure altimeter shows relative rates of payload ascent and descent. Temperature and relative humidity as recorded by sensors onboard SHAB-2 payload.
Altitude as measured by onboard pressure altimeter shows relative rates of payload ascent and descent. Temperature and relative humidity as recorded by sensors onboard SHAB-2 payload.

Appendix 1

ItemCountMass per item (g)Total Mass (g)Item cost (w/o shipping)TotalWith estimated tax + shippingVendor
Latex Balloon11500.01500.0$115.00$115.00$138.00High Altitude Science
Parachute1190.0190.0$85.00$85.00$102.00High Altitude Science
Paracord10.00.0$10.00$10.00$12.00Paracord Planet
Foil Tape10.00.0$3.00$3.00$3.60Amazon
Cardboard15.05.0$0.00$0.00$0.00(salvaged recycling)
Payload
Styrofoam Cooler150.050.0$30.00$30.00$36.00Amazon
Arduino Uno Starter Kit130.030.0$93.00$93.00$111.60GigaParts
Arduino battery152.052.0$15.00$15.00$18.00Ada Fruit
Altimeter10.50.5$30.00$30.00$36.00Parallax
MicroTrak AIO HA w/ V6 (batteries included)1517.1517.1$320.00$320.00$384.00Byonics
Linear Actuator256.0112.0$70.00$140.00$168.00Actuonix
SD Card10.50.5$7.50$7.50$9.00Adafruit
Coupons (32”x11” 1/16 Acrylic)160.11.6$1.00$16.00$19.20Lowe’s Home Improvement
Flat Head Machine Screws360.27.2$0.22$7.92$9.50Home Depot
3D printed parts for sampler210.020.0$22.00$44.00$52.80Lulzbot Taz 6
GoPro Hero 51118.0118.0$249.00$249.00$298.80GoPro
WingCam229.458.8$40.31$80.62$96.74Hobby King
Ground Equipment
RTL-SDR1NANA$20.95$20.95$25.14Amazon
Baofeng UV-5R Handheld Transmitter2NANA$34.99$69.98$83.98Amazon
Tarp1NANA$7.99$7.99$9.59Amazon
Weather Balloon Inflator1NANA$85.00$85.00$102.00High Altitude Science
Rental of Helium Tanks1NANA$299.00$299.00$358.80Party City (San Francisco)
Latex Gloves1NANA$9.85$9.85$11.82Amazon
Pelican Case1NANA$48.00$48.00$57.60Amazon
Portable Soldering Kit1NANA$26.00$26.00$31.20Amazon
Duct Tape1NANA$14.00$14.00$16.80Amazon
Zip ties1NANA$5.95$5.95$7.14Amazon
Total2662.70$1,832.76$2,199.31
Total flight mass (minus 1500 g for balloon)1162.70
eISSN:
2332-7774
Language:
English
Publication timeframe:
2 times per year
Journal Subjects:
Life Sciences, other, Materials Sciences, Physics