TEAM INFINITY AND BEYONDFINAL PRESENTATION

Fall 2011 Rev D

11-29-11

Adam Archuleta

Katie Cartee

Logan Farley

Patrick Klein

Kamron Medina

Catherine Villa

MISSION OVERVIEW

• Primary Objective: Prove that a glider-like vehicle is a practical way to return a payload to Earth

• Secondary Objective: Use a micro video camera to create a video of the high altitude environment around the BalloonSat from the point of view of the glider before, during, and after detachment

DESIGN:

• Glider

• Satellite

• Separation Mechanism

Burn wire

External Temperature

Internal Temperature

Relative Humidity

Glider

BalloonSat

Internal Power Video Camera SD Card

Internal Power GPS Tracker

9v Batteries Switch 1 Arduino

Uno Mosfet Burn Wire

9v Batteries Switch 2 Heater

Internal Power HOBO Sensors

Internal Power

Camera Switch

Internal Timer Camera SD Card

Functional Block Diagram

HARDWARE

RESULTS & ANALYSIS

RESULTS AND ANALYSISPrediction:

• The glider will remain attached for exactly 70 minutes, release, and free fall towards the earth. At roughly 9 km. air resistance will begin to slow the fall of the craft, eventually creating enough lift to stabilize the vehicle

• Our BalloonSat will continue to 30 km where the balloon will burst before it too free falls toward the earth. The parachute will slow the descent of the satellite after this

Actual:

• Satellite ascended to approximately 24 km, 6 shy of the prediction

• The glider remained attached for the duration of the flight, and failed to release at the designated height

• The glider survived burst and descent, but detached following a rough landing

HOBO GRAPHS- RHLaunch & Max humidity

Relative humidity decreases as temperature inside increased

Box opened

HOBO GRAPHS- INTERNAL

Launch and minimal temperature

Burst

Box opened andHeater turned off

HOBO GRAPHS- EXTERNAL Credit: Team 7

Burst

Launch

Landing

RECAP• Launch was beautiful; glider remained attached

• Ascended steadily (pictures of the wing)

• GPS failed 10 minutes into flight; last transmission: Greeley

• Burst occurred at 68 minutes

• At burst, struts had a structural failure (planned failure)

• At 70 minutes, release mechanism failed (not planned for)

• Fishing wire relentlessly held glider to the satellite

• Glider tumbled with the satellite, pictures show 180 degree flips in 10 second windows

• Last shot of glider taken one minute before landing

• Satellite lands in Nebraska approximately 105 minutes after launch

FAILURE ANALYSISRelease Mechanism

• Launch shook wire loose

• Burst shook wire loose

GPS

• 1) Fell off of plane

or

• 2) Stopped transmitting- Last transmission hit nearest tower: located in Greeley

Satellite

• Atmospheric conditions disrupted flight

Testing

• Most testing involved the burn wire mechanism

• Managed to repeat failure by simulating burst

• Thicker wire yields positive results, does not break as easily

CONCLUSIONS

• Fishing wire is a very strong, lightweight material.

• Copper wire breaks easily.

• Pictures from the flight are more reliable than the GPS.

We discovered:

• The GPS failed approximately 10 minutes into flight.

• Cube’s internal temperature and relative humidity were optimal.

• Pictures reveal glider still attached just moments before landing

Our data shows:

• Our glider is still out there.• Failures have been addressed

and fixed accordingly

• We still hope to test the new plane out of a hot air balloon for data.

• We are ready to re-fly

If we had the chance to try again:

• Better time management

• Test earlier

• Simplify project How we would have gotten better results:

• Use stronger copper wire or other kind of heating element

• Replace GPS recovery system with more capable technology

Appendix

RE-FLIGHT REQUIREMENTS

The rebuilt glider is ready to fly

• New GPS• New camera• Stronger copper wire

To fly again:

1. Tie on glider using fishing wire, looped around copper wire.

2. Ensure batteries are charged.3. Enable HOBO for planned flight time.

At launch4. Manually activate camera.5. Flip all switches.6. Fly away.

Compliance MatrixRequirement Process

Transport glider equipped with GPS technology to near-space conditions at approximately 26km Built each component, tested extensively, Got approval from the FAA

Incorporate a burn wire release mechanism into our satellite Designed mechanism, installed and tested

Keep total weight under 850 grams Slightly overweight, acquired the needed difference from another team

Keep total cost under $250 Stuck to our pre-determined budget, and contributed personal funds as needed

Recover GPS enabled Glider Used a team car to follow the path of the glider

Design and construct BalloonSat that will reach 26-30km Structure testing

Design and construct glider that will survive the ascent of the satellite through the atmosphere Structure and release mechanism tests

Ensure the glider will support the weight of a cell phone and camera Multiple test flights and design changes

Set up a connection between the glider and ground Used Sprint's Family Locater plan

Construction and testing completed and turned in by Friday, November 4th Completed and turned in Install burn wire and electrical required for the release in our BalloonSat

Tested in place of the magnet and found that it was more reliable; used the same system as we had set up for the magnet

Install fishing line onto glider Used a thin piece of copper wire and wrapped the fishiing line around it.Install and test a timer to release the glider from the Satellite at a specific altitude

Calculated velocity of ascent based on previous BalloonSat experiments; programmed arduino accordingly

Test integrated system before launchProgrammed arduino to release at 20 seconds; test results indicate the system is working as designed.

Research weights of all materials Used the ITLL scale

Check the accuracy of the aforementioned research Measured individual parts when they arrivedMeasure final design to ensure weight is under 850 grams

Following our final weigh-in, we were overbudget by a small amount. We negotiated for weight with another team

Research costs of all materials Google

Caculate total cost Created and used a detailed budget

Locate the glider on Google Maps Use Sprint Family Locator program

MASS AND COST SUMMARYComponent Qty. Cost Mass (g) Source Company Contact Part NumberBalloonSatHOBO H08-004-02 1 Provided 35.6 GatewayCanon SD780 IS 1 Provided 119.7 GatewayHeater 1 Provided 31.9 GatewayLithium 9V batteries 12 $6* 32.9 (x5) Home Depot 1-800-466-3337 #LA522SPBArduino UNO 1 $29.95 25.9 Sparkfun 1-303-284-0979 #DEV-09950MOSFET Power Control Kit1 $6.11* 8 Sparkfun 1-303-284-0979 #COM-10256Micro SD Shield 1 $17.56* 1.1 Sparkfun 1-303-284-0979 #DEV-098021B Glass Camera Filter 1 $16.46 8.6 Camerafilters.com M&K Optics LLC

12725 Country Hollow Rd.Oklahoma City, OK  73142

#HE2b

Tubular Electromagnet 1 $35.89 31 Electromechanicsonline.com818-785-6244 #ELMATU021020  Washer 2 Provided 12.4 (x2) GatewayPlastic Tube 1 Provided 10.8 GatewayFlag Sticker 2 Provided 1.6 GatewayOther Stickers 4 Provided 1.4 Gateway12cm Foam Core Cube 1 Provided 77 GatewayInsulation Provided 25.8 GatewayGliderLG Dare cell phone 1 Donated (worth $95)106 Patrick KleinFoam core structure 1 Provided 196 GatewayGlider Video Camera 1 $53.68 19.6 Ebay Enjoy Secret

Address: N/A#110729469400

SportsCamOne 1 $136 36 Action Hobbies Center 303-233-6275 #HLI2200Insulation Provided 5 GatewayTesting12V Alkaline Batteries Pack of 20 $9.89 7.5 Amazon.com 718-782-2242 #B004SK9P0ODry Ice and Cooler 11 lbs. $1.97*/ lb N/A King SoopersTotal Estimated $141.58 834.9 gTotal Actual (SpaceGrant) $250.00 880 g *Spent out-of-pocket $407.71

MESSAGE TO NEXT SEMESTER

Time• Manage it well.• Deadlines creep up.• You’ll be spending countless hours

on this class.• Test early so you have more time to

fix any problems you occur.• Prepare for late nights and all-

nighters

GOOD LUCK

Simplicity• Pick a simple project.• Problems occur: the simpler the

system, the less time the fix takes.