Master Thesis - OUFTI-1

More documents

Recommendations

Info

5 Complete FE analysis of OUFTI-1: Static, modal and random vibration101 5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 5.2 Modeling strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 5.2.1 Materials properties . . . . . . . . . . . . . . . . . . . . . . . . . . 102 5.2.2 Main structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 5.2.3 Solar panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 5.2.4 Antenna support . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 5.2.5 Electronic cards and battery support . . . . . . . . . . . . . . . . . 104 5.2.6 The endless screws . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 5.2.7 ADCS and THER components . . . . . . . . . . . . . . . . . . . . . 109 5.3 Static analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 5.3.1 Loads denition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 5.3.2 Boundary conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 112 5.3.3 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 5.4 Modal analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 5.4.1 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 5.5 Random vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 5.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 6 Conclusions 120 6.1 Summary of the accomplished work . . . . . . . . . . . . . . . . . . . . . . 120 6.2 Perspectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 6.3 Parallel activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 5
List of Figures 1.1 The Pumpkin's CubeSat family . . . . . . . . . . . . . . . . . . . . . . . . 15 1.2 Poly-Picosatellite Orbital Deployer (P-POD) . . . . . . . . . . . . . . . . . 15 1.3 The new European launcher: Vega . . . . . . . . . . . . . . . . . . . . . . 16 1.4 Main stage of Vega [20] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1.5 The three payloads of OUFTI-1 . . . . . . . . . . . . . . . . . . . . . . . . 18 2.1 Reference frame of OUFTI-1 . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2.2 Product tree of OUFTI-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2.3 CSK structure with the FM 430 . . . . . . . . . . . . . . . . . . . . . . . . 23 2.4 Dose depth curve for OUFTI-1 orbit [6] . . . . . . . . . . . . . . . . . . . . 24 2.5 One fully-integrated solar panel of OUFTI-1 . . . . . . . . . . . . . . . . . 25 2.6 Available holes on the CSK structure for cabling path [15] . . . . . . . . . 25 2.7 Interference between solar panel clips and OUFTI-1 solar cells [15] . . . . . 26 2.8 Conguration and dimensions of the antenna support . . . . . . . . . . . . 27 2.9 Description of the port obstructed by the antenna support . . . . . . . . . 27 2.10 Principle of the OUFTI-1 ADCS subsystem [25] . . . . . . . . . . . . . . . 28 2.11 Last year's conguration of the ADCS . . . . . . . . . . . . . . . . . . . . 28 2.12 Ideal positioning of the hysteretic bars . . . . . . . . . . . . . . . . . . . . 29 2.13 Magnetic eld obtained in the hysteretic bars for the rst conguration [25] 30 2.14 Magnetic eld obtained in the hysteretic bars for the second conguration [25] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2.15 Final conguration of the ADCS . . . . . . . . . . . . . . . . . . . . . . . . 31 2.16 Magnetic eld obtained in the hysteretic bars for the nal conguration [25] 31 2.17 Pictures of the ADCS components [25] . . . . . . . . . . . . . . . . . . . . 32 2.18 Conguration of OUFTI-1 electronic cards . . . . . . . . . . . . . . . . . . 33 2.19 Pictures of the engineering models of OUFTI-1 electronic cards . . . . . . 34 2.20 Exploded view of OUFTI-1 . . . . . . . . . . . . . . . . . . . . . . . . . . 36 3.1 Last year's design of the battery assembly . . . . . . . . . . . . . . . . . . 44 3.2 Available space under and above the batteries . . . . . . . . . . . . . . . . 45 3.3 Batteries during and after the vacuum test [15] . . . . . . . . . . . . . . . 46 3.4 Initial idea for the new design . . . . . . . . . . . . . . . . . . . . . . . . . 48 6
Page 1 and 2: University of Liège Faculty of App
Page 3 and 4: Abstract OUFTI-1, standing for "Orb
Page 5: 3.4 Initial idea . . . . . . . . .
Page 9 and 10: 4.18 MAC matrix using the simple me
Page 11 and 12: List of Acronyms ADCS Al AlNiCo ASI
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
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
Page 67 and 68:
• Other components, including the
Page 69 and 70:
3.9.3 Dynamic behavior Finally, it
Page 71 and 72:
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,
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
Page 119 and 120:
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
show all

Master Thesis - OUFTI-1

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?