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22/06/10

FUNcube Satellite. 22/06/10. 1. Introduction. Background information about AMSAT and AMSAT-UK Brief history of “OSCAR” satellites Info on today's operational spacecraft Background of FUNcube FUNcube – what it will do Expected timelines The follow on spacecraft Some conclusions.

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22/06/10

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  1. FUNcube Satellite 22/06/10 1

  2. Introduction • Background information about AMSAT and AMSAT-UK • Brief history of “OSCAR” satellites • Info on today's operational spacecraft • Background of FUNcube • FUNcube – what it will do • Expected timelines • The follow on spacecraft • Some conclusions 22/06/10 2

  3. AMSAT–UK 500 individual members –most are active radio amateurs. One of more than 20 such groups worldwide. In Europe, AMSAT groups exist in France, Germany, Italy, Spain, Portugal, Denmark , Sweden, and the UK.

  4. OSCAR Satellites Oldest - Oscar 1 - launched 1961

  5. OSCAR Satellites • Largest – Oscar 40 – launched 2000 • 450kg to HEO on an Ariane 5

  6. OSCAR Satellites Oldest still operational - Oscar 7 - launched 1974

  7. OSCAR Satellites Latest –HW-1 – launched Dec 2009 - Oscar 68

  8. OSCAR Satellites Created by groups in – US, Japan, UK, Russia, China, France, Germany, Australia, Argentina, Brazil, Canada, Korea, Israel, Italy, Portugal, Saudi Arabia, Malaysia, Mexico, Thailand, India, Netherlands, South Africa

  9. AMSAT-UK provided an S band transmitter/transponder in June 2004 and it was launched in October 2005 – Oscar 53

  10. In the beginning - AO51 We offered a 3 watt S band PA in April 2004 It was launched in June 2004

  11. Columbus L/S Band Antennas

  12. The Amateur Satellite Service ITU regulated frequency bands: HF @ 7, 14, 21 & 28MHz VHF @ 145MHz UHF @ 435, 1260* & 2400MHz Microwave @ 3.4GHz*, 5.6GHz*, 5.8GHz*, 10GHz, 24GHz + * - with some limitations .

  13. .

  14. Cubesats Standard - less than I.3 kg 100x100x100mm Double and triples also possible Standard deployment mechanisms “PODS” .

  15. PSLV launcher . CubeSat deployers

  16. Current cubesat statistics 40 launched already 200+ being developed Created by groups in: US, India, Netherlands, France, Switzerland, Italy, Germany, Denmark, Norway, Austria, Spain, Portugal Poland, Estonia, Japan, Turkey, Mexico etc etc….. .

  17. FUNcube Project– the background • Given that: • Cubesats are “cheap” • Cubesats can be built quickly • Cubesats should be “simple” • So: • Could we create an educational outreach mission? • Could it also have a amateur transponder? • Could we create a team of volunteers with the skills/passion? • Could we develop the actual educational outreach? • Could we fund it? 22/06/10 19

  18. FUNcube Project– primary objective • EDUCATIONAL OUTREACH • STEM subjects • Radio – practical understanding of communication • Electronics – how radios work • Physics – Data from 40+ telemetry channels • Orbital mechanics - Doppler • Materials science payload • -Demonstrate loss of heat energy by radiation from two materials with differing surface finishes • “Fitter Message” • - Short greetings messages 22/06/10 20

  19. FUNcube-1 Satellite 22/06/10 21

  20. FUNcube-1 Satellite • 1-Unit CubeSat • COTS CubeSat structure, EPS, Solar panels, PMAS and antennas • Bespoke CCT (Command, Control & Telemetry) Board • Bespoke RF and HPA boards • VHF telemetry downlink– 1k2 BPSK with FEC (Forward Error Correction) • Materials science experiment • Mode UV linear transponder (20kHz, 1W PEP) • Designed for SSO at around 600km (with a >5 year mission life!) • AMSAT-UK’s first spacecraft 22/06/10 22

  21. FUNcube-1 The “stack” 22/06/10 24

  22. FUNcube-1 The “Stack” 22/06/10 25

  23. FUNcube – Special Solar Panel 22/06/10 26

  24. Martlesham Team Meeting – Nov 2010 22/06/10 27

  25. FUNcube-1 The “Stack” for real 22/06/10 28

  26. Team Meeting @ ISIS - May 2011 22/06/10 29

  27. FUNcube – telemetry reception

  28. The “Ground Segment”- the FUNcube dongle • An SDR radio designed and built by Howard Long G6LVB • The Pro version covers 61 -1700MHz • 96kHz bandwidth I/Q output – works with all freeware SDR software & any OS • Possibilities for remote reception networks /parallel processing • Is creating a sensation!

  29. The “Ground Segment”- the FUNcube dongle • An SDR radio designed and built by Howard Long G6LVB • The Pro version covers 61 -1700MHz • 96kHz bandwidth I/Q output – works with all freeware SDR software & any OS • Possibilities for remote reception networks /parallel processing • Is creating a sensation!

  30. The “Ground Segment”- the FUNcube dongle

  31. FUNcube-1 Satellite • Thermal testing • Rutherford Appleton Laboratory - AIV section. • Qualification tests on engineering model • No solar panels or antenna deployment sub system • Find all thermal issues before going to time-consuming vacuum test • Access to spacecraft between tests is easy • Calibrating some temperature sensors along the way 22/06/10 34

  32. FUNcube-1 Satellite • Thermal testing • Rutherford Appleton Laboratory - AIV section. • Thermal air test is useful to find component and workmanship issues. (i.e. solder joints) • Gets a rough idea of temperature ranges • Components are put at desired temperature by forcing air around them (convection) • This heat transfer is NOT present in space due to the lack of air needed for convection 22/06/10 35

  33. Thermal sensor locations: On PA transistor Near uplink RX crystal On CCT microcontroller 22/06/10 36 Colloquium July 2011

  34. FUNcube-1 Satellite • Thermal testing • Rutherford Appleton Laboratory - AIV section. • Results are promising • Identified some issues to be solved later • No showstoppers • Lets move on to thermal vac! 22/06/10 40

  35. FUNcube-1 Satellite • Thermal Vacuum testing • Rutherford Appleton Laboratory - AIV section. • Qualification tests on engineering model • No solar panels or antenna deployment sub system • More time-consuming due to vacuum conditions • Access to spacecraft between tests is time consuming 22/06/10 41

  36. FUNcube-1 Satellite • Thermal Vacuum testing • Rutherford Appleton Laboratory - AIV section. • Thermal vacuum shows you the “real” distribution of heat • The sun is not mimicked in the vacuum chamber, so no “real” illumination • However, the steady-state temperatures can be observed • Another workmanship test (thermal stress cycling) • Also, outgassing of all materials is done in a “bake out” • RAL has facilities to analyze this 22/06/10 42

  37. FUNcube-1 Satellite 22/06/10 47 Colloquium July 2011

  38. FUNcube-1 Satellite 22/06/10 48

  39. FUNcube-1 Satellite • Vibration testing • Rutherford Appleton Laboratory - AIV section. • Qualification level tests on engineering model • No solar panels or antenna deployment sub system • Composite vibration profile to encompass several launch vehicles • X Y and Z Axis testing 22/06/10 49 Colloquium July 2011

  40. FUNcube-1 Satellite • Vibration testing • Rutherford Appleton Laboratory - AIV section. • 1) Sine survey to assess low stress response. 0.5G 5Hz to 2000Hz • 2) High sine amplitude. 4G 5 to 100Hz (launch) • 3) Quasi static. Short burst 11G 20Hz • 4) Random vibration. Composite 20 – 1000Hz at 7.8G for 2 mins 22/06/10 50

  41. FUNcube-1 Satellite 22/06/10 51 Colloquium July 2011

  42. FUNcube-1 Satellite 22/06/10 52 Colloquium July 2011

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