Master Thesis - OUFTI-1

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ITD Ibrahim Time Domain ITR Interface Technical Review JARL Japan Amateur Radio League KISS Keep It Simple, Stupid (and Short) LEODIUM Low Earth Orbit Demonstration In University Mode Li Lithium LV Launch Vehicle MAC Modal Assurance Criterion MECH Mechanism MLI Multilayer Insulation MoS Margin of Safety OBC On-Board Computer OBC 1 Pumpkin's On-Board computer (FM 430) OBC 2 Homemade On-Board Computer OUFTI Orbital Utility For Telecommunication Innovation P-POD Poly-Picosatellite Orbital Deployer PCB Printed Circuit Board PGA Pin Grid Array PSD Power Spectral Density QFP Quad Flat Pack RBF Remove Before Flight RF Radio Frequency SDR Software-Dened Radio SF Safety Factor SMT Surface Mount Technology SSI Stochastic Subspace Identication STRU Structure & Conguration THER Thermal Control T i Titanium TID Total Irradiation Dose TML Total Mass Loss UCL Catholic University of Louvain-la-Neuve UHF Ultra High Frequency UHMWPE Ultra High Molecular Weight Polyethylene ULg University of Liège VCD Verication Control Document VHF Very High Frequency xEPS Experimental Electrical Power Supply 11
Thesis outline This thesis focuses on the structural design of a new support for the batteries and dynamic analysis of the nanosatellite OUFTI-1, developed at the University of Liège (ULg). This work will be divided into 6 parts: • Firstly, a brief introduction about the project and its history will be presented. • Then, the general conguration of the satellite will be discussed. The requirements and constraints which led to the nal conguration, will be introduced subsystem by subsystem to bring an overall view of the project. • In the third chapter, the design of a new support for the batteries will be studied. The reasons that led to change the support created last year, will be exposed and the development phase will be discussed step by step. • After this structural design part, we will focus on dynamic analysis. The rst step will be to create a dynamic modeling procedure for the electronic cards. The dierent methods that already exist to realize an accurate Finite Element (FE) model will be discussed. Then, the best one will be applied to the Homemade On-Board Computer (OBC 2) of OUFTI-1. • Applying this procedure to each electronic card of OUFTI-1, complete static and dynamic analysis will be performed. Random vibration analysis will also be presented to demonstrate the structural integrity of the satellite during the launch phase. • Finally, the conclusions of this thesis will be drawn and perspectives for future works will be highlighted. 12
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 and 10: 4.18 MAC matrix using the simple me
Page 11: List of Acronyms ADCS Al AlNiCo ASI
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
Page 61 and 62: is to prevent the batteries' bulge.
Page 63 and 64:
• Then, the thermostats, that wil
Page 65 and 66:
Figure 3.23: Schematics of the cove
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• Other components, including the
Page 69 and 70:
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
Page 79 and 80:
Figure 4.5: MAC between the two mod
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• Global mass/stiness smearing me
Page 83 and 84:
4.2.6 Modeling of the chassis A gen
Page 85 and 86:
Q = ω k = 1 ω b − ω a 2 ζ ⇒
Page 87 and 88:
Their study was based on the fact t
Page 89 and 90:
Figure 4.14: Example of spacecraft
Page 91 and 92:
Figure 4.15: Location of measuremen
Page 93 and 94:
Figure 4.18: MAC matrix using the s
Page 95 and 96:
4.3.6 Application of the local mass
Page 97 and 98:
ρ P C 104 connector = 10.12 × 10
Page 99 and 100:
According to this particular shape,
Page 101 and 102:
This is due to the fact that this c
Page 103 and 104:
environment. Then, this model is ex
Page 105 and 106:
5.2.4 Antenna support For the anten
Page 107 and 108:
Components Young's moduli (GP a) Po
Page 109 and 110:
Components Young's moduli (GP a) Po
Page 111 and 112:
5.3 Static analysis As described in
Page 113 and 114:
Figure 5.9: Illustration of the com
Page 115 and 116:
Figure 5.11: Maximal Von Mises stre
Page 117 and 118:
Figure 5.12: First mode of OUFTI-1
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Figure 5.15: Precise PSD of Vega [5
Page 121 and 122:
Chapter 6 Conclusions This master t
Page 123 and 124:
provided for each method used. We h
Page 125 and 126:
last versions of the Verication Con
Page 127 and 128:
[13] Ph. LEDENT. "Design and Implem
Page 129 and 130:
[40] "Dejond - Aluminum Catalog ".
Page 131 and 132:
Appendix A Schemas of solar panels
Page 133 and 134:
Appendix B Schemas of electronic ca
Page 135 and 136:
Appendix C Fixations of the endless
Page 137 and 138:
Appendix D Datasheet of the battery
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Master Thesis - OUFTI-1

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