Carnivorous Ninja WarriorsFinal Presentation

Katie Brissenden, Kat Bryant, Cam Comeau, Aram Podolski,

Hannah Williams

December 1, 2009

Mission Overview

• Analyze the world at high altitude because, due to climate changes on the Earth, humans may need to live in different environmental conditions.

• The viability of life sustaining environments in different atmospheric conditions

• Six ultra-violet photodiodes, one on each face of the satellite. • Methane gas sensor and the carbon monoxide sensor will be

embedded onto the top of the satellite. • Dangerous levels of methane and carbon monoxide, and ultraviolet

rays will be determined prior to the launching of the satellite. Following the recovery of the satellite, the data will be analyzed to determine if the dangerous levels for each sensor was reached.

Design – 15 x 15x 15cm cube– ¾ inch insulation on all internal sides– 6 UV photodiodes on each face– 1 Methane gas sensor on top– 1 Carbon monoxide sensor on top– Parts

– Foam Core, AVR microcontroller, digital camera, resistor heater, HOBO, insulation, CO sensor/module, CH4 sensor/module, 8 UV photodiodes, tubing, wires, aluminum tape, 9V batteries, aluminum tubing, circuit board,

– UV photodiodes in aluminum tubes– Gas sensors embedded in foam core– Camera positioned horizontally to look out of one face, Plexiglas

covering opening to seal, anti-fog on Plexiglas– All hardware secured inside of cube with Velcro, hot glue

•AVR programmed to turn on gas sensor heaters, camera, heater

•Output •Programmed to collect data from UV, gas sensors, temperature, pressure, and X and Y accelerometer.

•Input•Take data every 20 milliseconds

How it works:

Differences between proposal and final product:

•Dropped humidity sensor•Budget problems

•Dimension Change•Smaller, more compact and greater heater efficiency

•UV sensors wired in series instead of parallel•Ensures data from any face of the cube

•Used Velcro to secure components instead of just hot glue•Plexiglas window for camera•Change of team positions/specialties

•Lost a team member

Results and AnalysisUV sensor data on ground

•Spike in data when exposed to UV light•1.1 to 1.18•Fluctuating from 1.16 to 1.19 because cube was being rotated and different amounts of UV light were being detected

•Dropped when UV source removed

Methane Gas Sensor Ground Data

•When exposed to the pre-calibrated level of methane, alarm is triggered causing voltage to jump from about 0 to approximately 4 V.

•Used propane tank•Singular trigger

•If gas level not reached, no jump in voltage would be recorded.

Carbon Monoxide Gas Sensor Ground Data

•Sensor was turned on when the gas was already present, causing the voltage to start at 4V.

•Car exhaust used to calibrate, approximately 7000ppm.•When moved away from source, alarm was no longer triggered and voltage dropped to about 0.

Ground data, no outside stimulation:

•Constant•Temperature readings not correct

HOBO Data•Turned on at 4:26 AM, not correct•Turned off at 8:07 AM•At 8:05:

• temperature changed from 71.77°F to 71.08°F•Dew point changed from 4.6 to 4.5•Not a big enough change

•At 8:07, very last reading, everything went back to original values except secondary temperature•The relative humidity stayed the same through the entire time recording data•Doesn’t seem that any of the data collected from HOBO is accurate

Date Time Temperature (*F) c:1 RH (%) c:1 2 Dew Point (*F) c:1 2 Abs Humidity (gm/M3) c:1 2 Uncomp RH (%) c:2

Temperature (*F) c:*411/12/09 04:26:30.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:26:35.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:26:40.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:26:45.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:26:50.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:26:55.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:00.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:05.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:10.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:15.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:20.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:25.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:30.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:35.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:40.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:45.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:50.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:27:55.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:00.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:05.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:10.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:15.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:20.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:25.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:30.0 71.77 23.4 32.5 4.6 23.4 28.4511/12/09 04:28:35.0 71.77 23.4 32.5 4.6 23.4 28.45

Hobo Data:

Flight Recap•At launch:

•Both red and green lights were on•Power to board

•Camera did not deploy•Gas sensor heaters did not get warm

•At recovery:•Camera still not deployed•Gas sensor heaters not warm

•Opened Cube:•All wires intact•Solid LED on AVR

•Not armed•Heater not warm

Failure Analysis•Data retrieval:

•Status was partially armed•Verifies that it was armed prior to launch, then turned on

•If not armed, status would have been in “safe mode” meaning disarmed

•Switches were turned on in the correct order•If not, status would have been armed

•Approximately 7.16 seconds of data taken•359 data points•Last data point was 0

•If there had been no data, all points would read 5•No change in X or Y

•Stationary when turned on•Pressure and temperature constant

•On ground when turned on•Not able to repeat failure•Everything worked during post-launch with no additional changes

x y temp pressure UV CO CH4

2.61723 1.14748 0.610361 3.84771 1.14748 0.009766 0.610361

2.63188 1.14748 0.605478 3.84771 1.14748 0.009766 0.605478

2.63676 1.14748 0.610361 3.84771 1.14748 0.004883 0.605478

2.63188 1.14748 0.610361 3.84771 1.14748 0.009766 0.610361

2.63188 1.14748 0.610361 3.84771 1.14748 0.004883 0.610361

2.62699 1.14748 0.610361 3.84771 1.14748 0.004883 0.610361

2.63676 1.14748 0.610361 3.83795 1.14748 0.004883 0.610361

2.63676 1.14748 0.610361 3.83795 1.14748 0.009766 0.610361

2.63188 1.14748 0.610361 3.84283 1.14748 0.004883 0.610361

2.63188 1.14748 0.610361 3.84771 1.14748 0.009766 0.610361

2.63676 1.14748 0.610361 3.84283 1.14748 0.004883 0.610361

2.63676 1.14748 0.610361 3.84283 1.14748 0.009766 0.610361

2.63188 1.14748 0.610361 3.84283 1.14748 0.004883 0.610361

2.63188 1.14748 0.610361 3.84283 1.14748 0.004883 0.610361

2.63188 1.14748 0.610361 3.84283 1.14748 0.009766 0.610361

2.62699 1.15236 0.610361 3.84283 1.14748 0.009766 0.610361

2.63676 1.14748 0.610361 3.84283 1.14748 0.009766 0.610361

2.63676 1.14748 0.610361 3.83795 1.14748 0.009766 0.610361

2.63676 1.14748 0.610361 3.84283 1.14748 0.004883 0.610361

2.63676 1.14748 0.610361 3.84283 1.14748 0.009766 0.610361

2.63676 1.14748 0.610361 3.84283 1.14748 0.004883 0.610361

Portion of flight data

Conclusions

We suspect between the time that we armed the board and the time of launch, the satellite was turned on and turned off, therefore disarming the board and not allowing any data to be collected during the flight.

Expected Data

•Increase in UV•CO detected•CH4 not detected

Conclusions Continued…

• Discovered that we could use what little data we collected in order to find out what went wrong with our satellite.

• While we did not get data from the flight, our ground data is accurate and using research we can predict what the results should have been.

Lessons Learned

• We should have…• Found one focus instead of trying to take on

several experiments• Focused more on programming earlier• Divided tasks earlier

• To get different results…• Removed the latch from the programming so

that it would stay armed

Ready to Fly Again• No special storage conditions, but there should

be care taken when handling the satellite.• To activate payload:

– Prior to flight replace camera, heater, and AVR batteries

– Arm payload– Flip power and then G-switch– Make sure red and green LEDs are on– Make sure LED on AVR is blinking– Camera should deploy when turned on

Appendix ARFP/Proposal/Requirement Compliance

Requirement BalloonSat Completed

850 gram max 814.1g Yes

$100 budget $158.29 No- remaining balance paid for by team members

Digital Camera Canon A570IS Digital Camera

Yes

Foam Core Structure- Foam CoreInsulation- Foam

Yes

Additional Experiments UV photodiodesGas Sensors

YesYes

Analog Sensor Inputs Do not exceed 5 volts for experiments

Yes

Flight string interface Non-metal tube, secured with washer/paperclip

Yes

Internal Temperature remains above -10°C

Internal heater, gas sensor heaters

Yes

Appendix B: Mass BudgetPart Weight (grams)

Canon A570IS Digital Camera(with 2 AA Batteries) 220

AVR Microcontroller board (with batteries) 150

Active Heater System (with batteries) 100

CH4 Gas Sensor Module 23.14

CO Gas Sensor Module 23.14

Structure 200

UV photodiodes (6) 30

Breadboard for UV sensor 20

Op amp for UV sensor 20

Hot Glue 10

Total 796.28

Actual 814.1

Appendix C: Financial BudgetComponent Price Part # Vendor Name1 CH4 Gas Sensor Module $29.99 27930 Parallax1 CO Gas Sensor Module $29.99 27931 Parallax

1 Camera $0.00 Canon A570IS Digital Space Grant

1 Microcontroller $0.00 Space Grant1 Heater $0.00 Space GrantAluminum Tape $0.00 Space GrantHot Glue $0.00 Space Grant

3/4 inch insulation $0.00 Space Grant2 Heater Batteries $0.00 Space Grant

8 Ultraviolet Super Bright LED's $11.92 RL5-UV1215 SuperBrightLEDS.comElectrical Wire $1.00 McGuckin Hardware

Aluminum Tubing (36 inches) $4.79 9409 McGuckin Hardware9V batteries (per set of 8) $23.98 McGuckin HardwareAnti-fog $4.99 McGuckin HardwarePropane Torch $15.99 McGuckin HardwareFishing Line $1.99 McGuckin HardwareShipping and Handling $33.65 Total Cost = $158.29

Appendix D: Messages to Next Semester

– Choose a simple mission objective and stick with it.– Start as early as possible and always be aware of

deadlines.– Don’t be afraid to ask EVERYONE and ANYONE

for help- they will help you!– Don’t be afraid to bribe for help (i.e. cookies)– Divide tasks and conquer ASAP!– If have team issues, tell your team…don’t bottle up

your feelings and have an awkward session about it later.