Master Thesis - OUFTI-1

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List of Tables 2.1 Coordinates of the OUFTI-1 CoG . . . . . . . . . . . . . . . . . . . . . . . 37 2.2 Mass budget of OUFTI-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 3.1 Available mass budget . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 3.2 Important corrections in the mass budget . . . . . . . . . . . . . . . . . . . 47 3.3 Properties of several batteries from Kokam [36] . . . . . . . . . . . . . . . 50 3.4 Materials properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 3.5 Dierent available congurations and problems for thermostats . . . . . . . 58 3.6 Necessary mass budget . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 3.7 First natural frequencies of the battery support . . . . . . . . . . . . . . . 68 4.1 Frequency deviations between the two models . . . . . . . . . . . . . . . . 77 4.2 Properties of the FR 4 material . . . . . . . . . . . . . . . . . . . . . . . . 85 4.3 Frequency deviations between corresponding modes using the simple method 91 4.4 Frequency deviations between corresponding modes using the global mass smearing method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 4.5 Increases of density due to each component of the OBC 2 card . . . . . . . 94 4.6 Frequency deviations between corresponding modes using the local mass smearing method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 4.7 Frequency deviations between corresponding modes using the homemade method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 4.8 Natural frequencies obtained by adding sensors of several mass to the FE model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 5.1 Properties of the materials used in OUFTI-1 . . . . . . . . . . . . . . . . . 102 5.2 Properties of the FM 430 card . . . . . . . . . . . . . . . . . . . . . . . . . 105 5.3 Properties of the OBC 2 card . . . . . . . . . . . . . . . . . . . . . . . . . 106 5.4 Properties of the EPS card . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 5.5 Properties of the xEPS card . . . . . . . . . . . . . . . . . . . . . . . . . . 107 5.6 Properties of the COM card . . . . . . . . . . . . . . . . . . . . . . . . . . 108 5.7 Results of the static analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 112 5.8 Five rst natural frequencies of OUFTI-1 in hard-mounted conguration . 115 9
List of Acronyms ADCS Al AlNiCo ASI BGA CAD CalPoly CDS CFRP CoG COM COTS CSL CSK CTE CVCM D-STAR DAR DoF EPS ESA ESTEC FE FM FR FRF GaAs GFRP GPS ICD IRM Attitude Determination and Control System Aluminum Aluminum-Nickel-Cobalt Italian Space Agency Ball Grid Array Computer-Aided Design California Polytechnic State University CubeSat Design Specication Carbon Fiber Reinforced Plastic Center of Gravity Telecommunication Commercial-O-The-Shelf Liège Space Center CubeSat Kit Coecient of Thermal Expansion Collected Volatile Condensable Material Digital Smart Technology for Amateur Radio Deviation Waiver Approval Request Degree of Freedom Electrical Power Supply European Space Agency European Space Research and Technology Center Finite Element Flight Module Flame Resistant Frequency Response Function Gallium-Arsenide Glass Fiber Reinforced Plastic Global Positioning System Interface Control Document Royal Meteorological Institute 10
Page 1 and 2: University of Liège Faculty of App
Page 3 and 4: Abstract OUFTI-1, standing for "Orb
Page 5 and 6: 3.4 Initial idea . . . . . . . . .
Page 7 and 8: List of Figures 1.1 The Pumpkin's C
Page 9: 4.18 MAC matrix using the simple me
Page 13 and 14: Thesis outline This thesis focuses
Page 15 and 16: of larger satellites. So, the CubeS
Page 17 and 18: 1.2 OUFTI-1 project 1.2.1 Genesis O
Page 19 and 20: • XatCobeo (Vigo - Spain): Develo
Page 21 and 22: Chapter 2 OUFTI-1: Flight system co
Page 23 and 24: Figure 2.2: Product tree of OUFTI-1
Page 25 and 26: 2.3.2 Solar panels The armor panels
Page 27 and 28: • We do not want to drill or manu
Page 29 and 30: In our case, because of the limited
Page 31 and 32: Figure 2.13: Magnetic eld obtained
Page 33 and 34: Figure 2.17: Pictures of the ADCS c
Page 35 and 36: consider the possibility of oshorin
Page 37 and 38: Figure 2.20: Exploded view of OUFTI
Page 39 and 40: I xx , I yy and I zz are called the
Page 41 and 42: Subsystem: Structure & Conguration
Page 43 and 44: Subsystem: Thermal Control Parts Co
Page 45 and 46: Chapter 3 Design of a new support f
Page 47 and 48: Figure 3.3: Batteries during and af
Page 49 and 50: The concept is the following one: F
Page 51 and 52: A test under vacuum conditions was
Page 53 and 54: Thermal Expansion (CTE) of the mate
Page 55 and 56: Figure 3.9: Classication by density
Page 57 and 58: The last property to determine is t
Page 59 and 60: • So, it was decided to use two t
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is to prevent the batteries' bulge.
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• Then, the thermostats, that wil
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Figure 3.23: Schematics of the cove
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• Other components, including the
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3.9.3 Dynamic behavior Finally, it
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3.10 Summary Through this chapter,
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Chapter 4 Electronic cards dynamic
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Figure 4.1: Example of manufacturin
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Figure 4.4: Illustration of the exp
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Figure 4.5: MAC between the two mod
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• Global mass/stiness smearing me
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4.2.6 Modeling of the chassis A gen
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Q = ω k = 1 ω b − ω a 2 ζ ⇒
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Their study was based on the fact t
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Figure 4.14: Example of spacecraft
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Figure 4.15: Location of measuremen
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Figure 4.18: MAC matrix using the s
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4.3.6 Application of the local mass
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ρ P C 104 connector = 10.12 × 10
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According to this particular shape,
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This is due to the fact that this c
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environment. Then, this model is ex
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5.2.4 Antenna support For the anten
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Components Young's moduli (GP a) Po
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Components Young's moduli (GP a) Po
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5.3 Static analysis As described in
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Figure 5.9: Illustration of the com
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Figure 5.11: Maximal Von Mises stre
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Figure 5.12: First mode of OUFTI-1
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Figure 5.15: Precise PSD of Vega [5
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Chapter 6 Conclusions This master t
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provided for each method used. We h
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last versions of the Verication Con
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[13] Ph. LEDENT. "Design and Implem
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[40] "Dejond - Aluminum Catalog ".
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Appendix A Schemas of solar panels
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Appendix B Schemas of electronic ca
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Appendix C Fixations of the endless
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Appendix D Datasheet of the battery
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Master Thesis - OUFTI-1

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