TEAM SSTFINAL PRESENTATION

Vlad Soukhovei, John Marcantonio, Kara Bongiovanni, Eric James, Sean Rivera,

Daniel Flora

11/30/10

Fall 2

010 Final

11-30-1

0

Mission Overview

Ascend to 30 km, collecting data regarding temperature, air density, sound

Compare air density to sound to confirm expected relationship

Compare amounts of Carbon dioxide with sound data

Hypothesis: air density goes down=frequency increases, amplitude decreases

Large amounts of carbon dioxide result in new recorded frequencies

Why? Use sound as means of detecting gas

Design

Hobo Flight Internal

lLaunch

lBurst

Recovery

External Temp. Flight

??

Flight Data Brunton Weather Channel

Launch

30,000 ft

Burst

1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 490

0.002

0.004

0.006

0.008

0.01440 Hz

440 Hz with CO2440 Hz without CO2

Time (5 sec intervals)

Amplitude (m)

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 510

0.001

0.002

0.003

0.004

0.005

493.88 Hz

493.88 Hz with CO2

493.88 Hz without CO2

Time (5 sec intervals)

Amplitude (m)

1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 490

0.002

0.004

0.006

392 Hz

392 Hz with CO2392 Hz without CO2

Time (5 sec intervals)

Amplitude (m)

Post Flight CO2 Test

Post-flight Probe Failure Test

Failure

MICROPHONE WASN’T TURNED ON. Temp Probe

Brunton temp Post-test

Next Flight: New temp probe Don’t make same mistake twice.

Conclusion

Teamwork is important Work ahead WE FAILED TO TURN EVERYTHING ON.

Never again Correlation between CO2 undiscernable

with further ground testing Engineering involves failing

What to do different?

Smaller, warmer BalloonSat PRESS DA BUTTON! Increase amplitude of speaker Press just one itty bitty button Test HOBO more Test for a gas that is more prevalent than

carbon dioxide

Fly Again

For storage, batteries in weather channel should be taken out

Isolate speaker For flight, TURN ON and insert

microphone and weather channel Seal top panel Flip speaker switch, heater switch Paper-clip the camera switch

Mass/Budget

Final Budget: $283.97

Final Weight: 990 grams

Core Requirements

Requirement Result

BalloonSat internal temperature shall remain above -10 degrees Celcius

Unknown

BalloonSat shall not exceed 850 grams

BalloonSat is currently overweight (app. 940 g)

Budget shall not exceed $300.00 Final Budget : $283.97

Materials/Components (HOBO, foam core, temp probes, flight string/tube, camera, scientific experiment, flag,heater)

All necessary components are accounted for