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Team Magnaritaville Final Presentation. Zachary Cuseo, Andrew Fruge ’, Tyler Knappe , Christopher Nie , Sydni Smith, and Shweta Maurya December 1, 2009. Mission Overview.

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Team magnaritaville final presentation

Team MagnaritavilleFinal Presentation

Zachary Cuseo, Andrew Fruge’, Tyler Knappe, Christopher Nie, Sydni Smith, and ShwetaMaurya

December 1, 2009


Mission overview
Mission Overview

  • The twofold purpose of this BalloonSat mission will be to show that the Earth's magnetic field varies and to show that magnetometers can be used to determine the attitude of a BalloonSat.


Mission overview continued
Mission Overview Continued

  • Hypothesis

    • Fluctuation in the Earth’s magnetic field

    • Finding a vector which will facilitate in determining in which direction the camera is pointed

  • Satellite attitude

  • To better understand the magnetic field


Mission specific components
Mission Specific Components

  • 1 AVR Microcontroller

  • 2 Magnetometers

  • 2 Analog Proto Board Connectors

  • 5 9V Batteries

  • 1 Canon Camera

  • 1 Heater

  • 1 HOBO



Functionality
Functionality

Switch Batteries HOBO

External

Heater AVR Temperature

Probe

Magnetometers Accelerometer Camera

Internal Temperature Probe

Pressure Sensors


Design differences
Design Differences

Proposed

Actual

The Heater and Batteries were placed in a corner to maximize heating efficiency, while the AVR was attached to a wall.

The two magnetometers extended from adjacent sides for more accurate readings

No photo of a cheeseburger was used.

No Faraday Cage was necessary.

  • Staggering the Heater, Batteries and AVR for balance.

  • The two magnetometers will extend from opposite sides of the Satellite.

  • There will be a photo of a cheeseburger to truly be C.A.T.E.O.S.

  • Utilizing a Faraday Cage


Results and analysis
Results and Analysis

Mag X

Strength (nT)

Time

Mag Y

Strength (nT)

Time


Results and analysis1
Results and Analysis

Accel X

Accel Y

Internal Temp (°C)

Pressure (psi)


Results and analysis2
Results and Analysis

  • Vertical

Mag Y

Strength (nT)

Time

Voltage

Time


Results and analysis3
Results and Analysis

  • Vertical field trends –

    • Overall decrease of 4,219 nT

    • Expected change due to altitude of 1,694 nT

    • Rolling into x-direction would explain this extra variation


Results and analysis4
Results and Analysis

  • Magnetometer Data

X-Magnetometer Variation


Results and analysis5
Results and Analysis

  • Picture 771 – 8:08 a.m.

  • Data point (28,039,1.94339)  East


Results and analysis6
Results and Analysis

  • Picture 705 – 7:45 a.m.

  • Data point (21,379, 2.2266)  North


Lessons learned
Lessons Learned

  • Orient vertical magnetometer pointing down

  • Add a third magnetometer in the horizontal plane for definitive attitude determination

  • Prototype structure

    • Keep it simple

    • Test different designs for an efficient use of space


Ready to fly
Ready to Fly

  • Store payload in standard conditions upright to protect magnetometers

  • Perform launch checklist


Failure analysis
Failure Analysis

  • No in-flight failures

  • On functional test, y magnetometer was discovered to be inoperative

    • Thought to be connection problem

    • Found faulty connection to the proto board

    • Soldered and verified to be working

  • Magnetometer Structural Failure

    • End cap lost during transport to launch site

    • Wax paper taped onto end at launch site


Conclusion
Conclusion

  • Discovered a change in the vertical component of the magnetic field with respect to altitude

  • Confirmed a spin in the satellite, as seen through the sinusoidal data

  • Discovered attitude determination is possible with the use of a horizontal magnetometer



Budgets

Mass Budget

Budgets

Monetary Budget


Message to next semester
Message to Next Semester

  • Keep the experiment simple, but make sure everyone is interested in it.

  • Find a way to sufficiently secure the camera and to cover/insulate it.

  • Establish a consistent time to meet on a weekly basis. Do this as early as possible.

  • Utilize your resources (Space grant, your professors, etc.)

  • Start video taping early

  • Prepare for this project to be a major time commitment

    • Dedicate at least one all-nighter to the satellite