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CubeSats

CubeSats. NASA-Olin Summer Research SOS and ACS Teams. What are CubeSats?. Small pico-satellites Size: 10 cm x 10 cm x 10 cm (1 liter volume) Mass: 1 kg

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CubeSats

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  1. CubeSats NASA-Olin Summer Research SOS and ACS Teams

  2. What are CubeSats? • Small pico-satellites • Size: 10 cm x 10 cm x 10 cm (1 liter volume) • Mass: 1 kg • Developed by Stanford University and California Polytechnic Institute as an economical means for universities to launch their own satellites • Standard set of off the shelf components available

  3. Deployment Mechanism • P-POD: Poly Picosatellite Orbital Deployer • Developed by Cal-Poly • Simple, robust design easily mountable on most launch vehicles • Can deploy up to 3 cube sats in 1 P-POD

  4. Advantages of CubeSats • Comparatively cheap • Able to launch a small satellite into space for approx. $40,000 • Allows universities to develop their own satellite missions • Standard deployment mechanism • Drives innovations in size of space computer and sensor technology • Over 80 universities and 7 corporations currently working on CubeSat projects

  5. Past CubeSat Missions • First mission launched June 30, 2003 • Of the 6 CubeSats launched, only 2 were contacted • Since then, there have been 31 CubeSats launched

  6. Sun-Sensor UMBC-GSFC Cube Sat • Working with team from UMBC and Goddard Space Flight Center on a CubeSat for imaging clouds.

  7. Cloud-Side Profiling ice Temperature Water ice Aerosol Impact in Microphysics? mixed phase Water-ice processes water Collision-Coalescence

  8. Radiator face Cloud CubeSatOrbit Geometry:

  9. Attitude Control System Dan Grieneisen Jacob Izraelevitz Christina Powell Lorraine Weis

  10. What is Attitude? • Roll, pitch, and yaw.

  11. Our Cubesat • Photograph clouds • Radiate heat • One picture per orbit • Altitude of 650 km

  12. Control with Magnetorquers • Rely on Earth’s magnetic field • Non-holonomic about axis along magnetic field • Magnetometer to evaluate field • Replace flywheels

  13. Model Simulator (Plant) Coil Voltages B, S Control Algorithm

  14. Control Algorithm

  15. Prototype Design • Mechanical Design • Building plastic frame in shop • Winding coils this week • Hardware Design • PIC as I/O device, run control algorithm off computer

  16. Initial Prototype • Complete machining • Design tests • Apply control algorithm to prototype

  17. Final Prototype • Integrate ACS with SOS • Settle on final design specifications • Design and machine parts • Test

  18. Deliverables • CubeSat prototype integrated with SOS • Prototype demonstration • Executes all 4 control tasks • Not tested with time/power requirements • Control software and manual • Final Report

  19. Questions?

  20. Just for Fun http://www.cubesat.auc.dk/anim/cubesat_2tie.avi

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