ZAMBONI

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ZAMBONI

• Zippy Aerospace Module Broadcasting
• Observed Not-so-bad Images
• Fall Design Review
• Harrington Hall, Room 218

2
DesignTeam

• Mechanical Engineering
• Jon Fargo
• Katie Kirchner
• Andrea Mattern
• Electrical Engineering
• Mike Hoffmann
• Jon Lovseth
• Chris Schmidt
• Jason Senti
• Warren Wambsganss
• Not-so-bad Faculty
• Arnie Johnson
• Richard Schultz
• Will Semke
• Chang-Hee Won

3
UND Vision
1. Moored Balloon
2. Free Balloon
4. AgCam (ISS) CubeSat

1. AEROCam

2000
2000-2001
2001-2002
2002-beyond
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What is a CubeSat

• Idea originated at
• Stanford University by
• Professor Robert Twiggs
• California Poly
• responsible for
• launch integration

Size 10 cm (4) Cube Mass 1 kg
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Mission

• Successfully build and launch a CubeSat
• Transmit a single digital image from space
• and receive the image on Earth

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Goal

• Orbit Earth for approximately 8 months
• Transmit numerous digital images to Earth
• Transmit health/status data to Earth
• Transmit data from a commercial/
• government sponsored payload to Earth

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Launch

• Expected early 2004 launch
• 800 kilometer orbit
• Approximately 80,000
• Rent space for government/industry payload
• Alumni support
• Decameter for a Dollar campaign

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System Overview
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JonFargo
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DesignSpecs

• Requirements
• Mass not to exceed 2 kg
• Center of mass within 2 cm of the
• geometric center
• Structure Material Aluminum 6061
• Testing
• Vibration qualification test
• Thermal test
• Vibration acceptance test
• Integration

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Mass Budget

• oz. gm.

Communication / Control Transceiver 2.08 59
Communication / Control TNC 2.01 57
Communication / Control Microcontroller    
Communication / Control Circuit Board est 6.00 170
     
Power Solar cells (1_at_8g) 28 cells 7.90 224
Power Li Ion batteries est 6.70 190
Power Battery charging circuitry    
Power Voltage regulators    
Power Watchdog chip    
     
Attitude Control Passive magnet 1.27 36

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Mass Budget
Sensors Temperature sensors    
Sensors Voltage sensors    
Sensors Current sensors    
Sensors 2 Digital cameras w/o batteries or case (1_at_96g) 6.77 192
     
Structure Aluminum frame est. 17.64 500
     
Payload Allotted mass 10.58 300
   
  20 Margin 14.11 400
  Total 75.06 2128
  Budgeted Mass 70.55 2000
  over/under budget 6.40 6.40
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SizeBudget

• Total volume available
• 10 1020 cm 2000 cm3
• Total Volume Used
• 680.3 cm3
• 66 Volume Remaining
• Does not include wires and
• other misc. connections

Major Components Major Components Major Components    
cu. in. cu. cm. cu. in. cu. cm. cu. in. cu. cm. cu. in. cu. cm. cu. in. cu. cm.
Ham Radio 2.88 45 45 45
TNC 9.28 152.38 152.38 152.38
Li Ion Batteries 3.061 50.92 50.92 50.92
Digital Camera - x 2 26.62 432 432 432
Frame 118.64 2000 2000 2000
Payload ¼ volume 29.66 500 500 500
         
Total Volume 41.841 680.3 680.3 680.3
Remaining Volume 47.139 819.7 819.7 819.7
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P-Pod

• Aluminum 7075-T6
• Spring Deployed
• Thermal line
• cutter actuator
• Railings
• Interface port
• (access CubeSat
• in deployer)

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Testpod

• Internal dimensions same as launcher tube
• Will accommodate double and triple cubes
• Designed and manufactured at UND

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Testpod

• Launch condition testing
• Needs two mounting plates
• Bolts to shaker table

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Prototypes

• Rapid prototyping machine
• Full size and scale models
• ABS plastic

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WarrenWambsganss
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Why Attitude Control?

• Alignment with the Earths magnetic field

Picture footprint
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Attitude Control
Decreasing Complexity

• Magnetic torque rods
• Uses magnetic torque to
• point satellite
• Gravity gradient
• Uses boom (weight) to align with
• Earths gravity gradient
• Magnetic alignment
• Makes use of a magnet to align
• with the Earths magnetic field

Active
Passive
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Active Control

• Relies on global position system data (GPS)

Cannot obtain unlocked GPS module
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Magnetic Alignment

• Extremely strong
• Rare-Earth magnets
• Larger magnets
• produce more torque
• Probability of seeing
• Earth increases from
• 95.88 to 99.25 at
• 800 km orbit

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Magnetic Testing

• Helmholtz
• Coil

• Constant magnetic
• field near center

• Used to determine
• magnetic torque

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SolarCells

• GaAs Galium Arsenide
• Most common in space
• High efficiency

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Solar Cell Circuitry

• Used to control charging
• of system batteries

• Constantly monitors
• output of solar cells

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JonLovseth
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Components

• Camera
• Olympus D-360L
• Microcontroller
• MSP430F149
• TNC
• PicoPacket
• Radio
• Yaesu Vx-1R

Hamster for power
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Interface
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02000008FF08FF4402851234AB386510D0385610834D831805

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Subliminal Message
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Not-so-badImages
Thumbnail 4kbytes
SQ resolution 50-64kbytes
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MikeHoffmann
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Ground Station

• Data received in hexadecimal
• Contains header and
• footer information
• (must be parsed)

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Image Reception

• Header and footer
• analyzed to determine
• how to process image
• Remaining image data
• is output as a viewable
• JPEG image

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Demo

• ZAMBONI (Space)

Ground Station
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JasonSenti
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STK Simulation

• Satellite Tool Kit
• Used for simulating
• space satellite missions

• STK provides an
• analytical engine to produce 2-D map
• and 3-D simulations

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STK Simulation

• 3D Simulation of Launch and P-Pod Ejection

Video Removed for Website Version
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STK Simulation

• 3D Simulation of ZAMBONIs Orbit

Video Removed for website version
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KatieKirchner
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Testing

• Shaker Table
• MB Dynamics C10E shaker M6K amplifier system

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Testing
Cold Thermal Testing

• Standard 5.0 cu. ft freezer
• Desired temp -40 C
• Achievable temp -32 C
• Relay equipped for
• DAQ card control

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Testing

• Vacuum Chamber

• Custom built with acrylic
• 5.5 inside diameter
• Over 700 lbs of force on
• blind plates
• Can achieve vacuum of less
• than 0.2 inches of mercury

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AIAA

• American Institute of Aeronautics and
  Astronautics
• Unites UND Aerospace, Space Studies,
• and Engineering students
• Access to UND Student Organization funding
• Tentative UND AIAA Student Branch, January 2003

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ChrisSchmidt
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USSS

• 2002 University Space Systems Symposium
• November 8-10, 2002
• University of Hawaii-Manoa

Attendees Jon Fargo Jon Lovseth
Chris Schmidt Jason Senti Chang-Hee Won
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CubeSat Benefits

• Low cost
• Workforce training
• Recruitment
• New space technology
• Educational outreach
• Challenging, motivational, educational

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Special Thanks

• Dr. John Ettling, V.P. of Academic Affairs and
  Provost
• Prof. Arnie Johnson, Chair of Electrical
  Engineering
• Dr. Donald Moen, P.E., Chair of Mechanical
  Engineering
• Dr. John Watson, Dean School of Engineering and
  Mines
• Dr. Shanaka de Silva, North Dakota Space Grant
• Intercollegiate Academics Fund (VPAAs Office)