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

Sydni Smith, and Shweta Maurya5 November, 2009

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.

• Structural Testing– Completed on 10/11– C.A.T.E.O.S. survived the rigorous testing and

remained intact• Magnetic Sensor Testing

– Completed on 11/4• Cold Test

– Completed on 11/1– All hardware functioned for 90 minutes within

a cooler filled with dry ice

Survived but showed wear on corners

Condition of test structure after tests

Tested sensors independent of the AVR to determine expected range

Connected sensors to the AVR, recorded the data to the AVR, and parsed the data into spreadsheet

This data was compared to the expected values from the initial testing and found to be accurate

Sample raw data sheet

Mag_X: 2.00687 Roughly east/west direction

Mag_Y: (1.60*1.74807) – 3.2 = -.403088 Gauss

Internal temperature data from cold test

We expect to see the magnetic field decrease as 1/(Earth’s Radius + d), where d = the altitude during flight.

- We expect these results because we are traveling away from the source of the magnetic field, the Earth.

This variation will be shown in the data from the Y-magnetometer

Expected Mag_X range: 1.733V – 2.333V 2.333V corresponds to the sensor

pointing north 1.733V corresponds to the sensor

pointing south 2.000V corresponds to the sensor

pointing east or west

Hardware may shut off under extreme cold conditions and/or lack of sufficient insulation

Properly securing camera Getting sleep

Requirement ComplianceScience 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