Master Thesis - OUFTI-1

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6.3 Parallel activities This project, which is a particular subject for a master thesis, gives to the students the opportunity to take part in a lot of parallel activities, such as ESA conferences or CubeSat meetings all over the world. So, the activities, in which I am directly involved, performed during this academic year, will be presented here: • The rst activity, which set at Royal Meteorological Institute (IRM) based at Bruxelles (Belgium), was a general public presentation. During this activity, the goal was to present the project to people that has no knowledge, or nearly, of the space activities. It allows us to go one's rst steps inside the project and to familiarize us with its multidisciplinary aspects. • The second activity, which set at CSL (Belgium), was a conference with the Del-C 3 team. During this activity, presentations of the two teams' projects were realized. It allows us to exchange several points of view with them and to move forward in our understanding of constraints imposed by the space environment. • The following activity was the Interface Technical Review (ITR), which set at the EuroSpace Center of Redu (Belgium). At this moment, each student had all the technical background necessary to accomplish his personal work. Before going to Redu, each of them had to provide a data package including all the interfaces between his subsystem and the other ones, and internal interfaces inside his own subsystem [62]. For each of these interfaces, a technical solution was proposed by the students who are in charge of the concerned subsystems. Then, during the weekend spent to Redu, several meetings were realized. These meetings concerned the four general categories of interfaces that exist in a satellite, including: mechanical, thermal, electrical and data interfaces. They involved the students of the <strong>OUFTI</strong> team, the system engineering team, the project managers, the professors and several industrial specialists. During these meetings, each solution was studied with the help of all this sta, and was approved or improved to fulll the requirements imposed to it. This activity allowed to dene precisely all the interfaces present inside the CubeSat and to highlight them, and brought to each student involved in the project, a better understanding of the overall satellite. It allowed also to take a big step for the project achievement by emerging from an Interface Control Document (ICD) for <strong>OUFTI</strong>-1. • Finally, the last activity during this year, was the Workshop on the Verication of the CubeSats for the Vega Maiden Flight, which set at ESTEC (The Netherlands). During this workshop, the verication concept and the acceptance data package were introduced. These concepts are really important because they include all the verications which must be performed on each CubeSat before delivering it to ESA. The 123
last versions of the Verication Control Document (VCD) and the ICD were also introduced. These documents were covered point by point to explain to the CubeSats teams what ESA expects from them for the qualication of their CubeSats. Several presentations on the structural verication and collision & contamination analysis were also performed by ESA experts. Finally, each team had defended its project through a general presentation about their schedule for the following months. This activity allows us to meet people coming from all over the world, and to take advantage of their own experience to learn more and more about this fascinating world that the space is. 124
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University of Liège Faculty of App
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Abstract OUFTI-1, standing for "Orb
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3.4 Initial idea . . . . . . . . .
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List of Figures 1.1 The Pumpkin's C
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4.18 MAC matrix using the simple me
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List of Acronyms ADCS Al AlNiCo ASI
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Thesis outline This thesis focuses
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of larger satellites. So, the CubeS
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1.2 OUFTI-1 project 1.2.1 Genesis O
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• XatCobeo (Vigo - Spain): Develo
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Chapter 2 OUFTI-1: Flight system co
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Figure 2.2: Product tree of OUFTI-1
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2.3.2 Solar panels The armor panels
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• We do not want to drill or manu
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In our case, because of the limited
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Figure 2.13: Magnetic eld obtained
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Figure 2.17: Pictures of the ADCS c
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consider the possibility of oshorin
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Figure 2.20: Exploded view of OUFTI
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I xx , I yy and I zz are called the
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Subsystem: Structure & Conguration
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Subsystem: Thermal Control Parts Co
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Chapter 3 Design of a new support f
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Figure 3.3: Batteries during and af
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The concept is the following one: F
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A test under vacuum conditions was
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Thermal Expansion (CTE) of the mate
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Figure 3.9: Classication by density
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The last property to determine is t
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• 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,
Page 73 and 74: Chapter 4 Electronic cards dynamic
Page 75 and 76: Figure 4.1: Example of manufacturin
Page 77 and 78: Figure 4.4: Illustration of the exp
Page 79 and 80: Figure 4.5: MAC between the two mod
Page 81 and 82: • 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,
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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
Page 119 and 120: Figure 5.15: Precise PSD of Vega [5
Page 121 and 122: Chapter 6 Conclusions This master t
Page 123: provided for each method used. We h
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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