Team MagnaritavilleFinal Presentation

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

and Shweta MauryaDecember 1, 2009

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

• 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

- 1 AVR Microcontroller- 2 Magnetometers- 2 Analog Proto Board

Connectors- 5 9V Batteries- 1 Canon Camera- 1 Heater- 1 HOBO

Functional Block Diagram

Functionality

Switch Batteries HOBO External Heater AVR Temperature Probe

Magnetometers Accelerometer Camera

Internal Temperature Probe Pressure Sensors

Design Differences

Proposed• 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

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.

Results and AnalysisMag X

Mag Y

Stre

ngth

(nT)

Stre

ngth

(nT)

Time

Time

Results and Analysis

Accel X

Accel Y

Internal Temp (°C)

Pressure (psi)

Results and Analysis

• VerticalMag Y

Stre

ngth

(nT)

Time

Volta

ge

Time

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 Analysis

• Magnetometer DataX-Magnetometer Variation

Results and Analysis• Picture 771 – 8:08 a.m.• Data point (28,039, 1.94339) East

Results and Analysis

• Picture 705 – 7:45 a.m.• Data point (21,379, 2.2266) North

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

• Store payload in standard conditions upright to protect magnetometers

• Perform launch checklist

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• 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

RFP ComplianceRequirement Compliance

Science Measuring Earth’s magnetic field with respect to altitude changes

Analog sensor inputs cannot exceed 5v Provided sensors and magnetometers use 5V DC

Ready to fly again after flight Structure will be tested thoroughly in order to ensure the ability to fly again after flight

Secure, non-metal flight string tube A paper clip will be used to secure the tube, as well as hot glue if needed

Internal temperature must remain above -10 degrees Celsius A heater system will maintain the temperature of the internal structure

Total weight cannot exceed 850g Mass of payload has been budgeted and is within the requirements

Acquire ascent and descent rates of flight The design will be constructed to withstand the changes in pressure and high speeds during ascent and descent

Design shall allow for a 30g HOBO Provided, set-up, and accounted for in mass and design

External Temperature Cable ProvidedAVR Microcontroller Board and Batteries – 150g Provided, set-up, and accounted for in mass and design

Heater - 100g Provided, set-up, and accounted for in mass and design

Canon Digital Camera - 220g Provided, to be set-up, and accounted for in mass and design

Foam Core Provided and is being used for the external structure

Allowance for spare parts on budget and parts list Some money has been allotted within the budget for spare parts

U.S. Flag and Contact info on outside Provided and will be attached on external structure

Keep documents and design in metric Design and documents are consistently kept in metric units

Launch on November 7, 2009 The team has created a schedule which accommodates for launch date on 11/7

No one shall get hurt Team shall use goggles, gloves, and other safety gear when necessary

Return hardware to program in working order Hardware will be securely placed inside the structure to ensure that it returns in working order

All parts paid by Chris Koehler and receipts provided Order forms are completed, orders have been made, receipts have been sent

Turn in receipts within 60 days Additional receipts will be sent when purchases are made

Have fun and be creative Team Magnaritaville is having fun and being creative with its satellite, Cheeseburger at the Edge of Space

No living things on payload No living things are being used in the experiment, or in the payload

Complete final report with bonus video The team plans to make a video and complete report on time

Budgets

Component Purchase Location Quantity Unit CostMagnetic Field Sensor

Vernier Software and Technology 2 $58.00

Analog Proto Board Connector

Vernier Software and Technology 2 $10.00

ShippingVernier Software and Technology 2 $15.64

Flight Batteries Provided 4 ProvidedFoam Core Provided 3 ProvidedTemperature Cable Provided 1 ProvidedAVR Microcontroller Board Provided 1 ProvidedSwitches Provided 2 ProvidedHeater Provided 1 ProvidedAluminum Tape Provided 1 ProvidedAdhesive (Hot Glue Sticks) Provided 10 ProvidedAdditional Materials Local Stores ~ $16.36Total Cost $183.64

ComponentPurchase Location

Item Code

Quantity

Single Item Mass

(grams)

Sum (grams)

Magnetic Field Sensor*

Vernier Software and Technology

MG-BTA 2 69.2 138.4

Analog Proto Board Connector*

Vernier Software and Technology

BTA-ELV 2 5.6 11.2

Camera with Batteries* Provided 1 228.5 228.5HOBO Provided 1 30 30AVR Microcontroller Board, Heater, Power Connectors, and Switches* Provided 1 117.1 117.19V Batteries* Provided 4 46.7 186.8Washers* Provided 2 14.9 29.8Paper Clips* Provided 2 1.2 2.4American Flag Provided 1 1 1

Foam Core Structure Provided

1563 cm

2 98.6 98.6

Tape, Glue, etc. Provided

as needed

6.2 (remaining weight) 6.2

Total 850*all weights measured for our actual components

Monetary Budget

Mass Budget

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