Projecte llegit
Títol: Analysis and design of the 3Cat-8 pointing control system for high-volume data downlink
Estudiants que han llegit aquest projecte:
- CRUZ MARTINEZ, ALBERTO (data lectura: 27-06-2023)
- Cerca aquest projecte a Bibliotècnica
- CRUZ MARTINEZ, ALBERTO (data lectura: 27-06-2023)
- Cerca aquest projecte a Bibliotècnica
Director/a: PARK, HYUK
Departament: FIS
Títol: Analysis and design of the 3Cat-8 pointing control system for high-volume data downlink
Data inici oferta: 06-02-2023 Data finalització oferta: 06-10-2023
Estudis d'assignació del projecte:
- DG ENG AERO/SIS TEL
Tipus: Individual | |
Lloc de realització: EETAC | |
Nom del segon director/a (UPC): Adriano Camps | |
Departament 2n director/a: | |
Paraules clau: | |
CubeSat, NanoSat, Space Engineering, Attitude Control, Antenna, Actuators, Electromagnetism, Electromagnetic Waves | |
Descripció del contingut i pla d'activitats: | |
Objectives:
This project aims to study the feasibility and design of both the communications and actuators subsystems of the 3-Cat 8 mission of the UPC's Nanosat Lab. The project will be focused on two main subjects: the design of the magnetorquers of the satellite and analysis of the data downlink antennas. The magnetic actuators will allow the satellite to point towards Nadir, Sun and the Ground Station in order to transmit the data acquired by the experiments. The communications study includes the realization of the link budgets for the S and X-band systems and the design of the antennas to ensure that the data transmission is carried out correctly. Methodology: In order to carry out these tasks, this project will be divided into two tasks: Regarding the design of actuators, this task will be achieved by simulating the magnetorquers with the constraints from the satellite mission: Power, size, weight, etc. The objective is to design a coil that generates the required momentum in order to stabilize the satellite after the launch and the pointing maneuvers. The design will be done by MATLAB and once its main characteristics have been decided (size, number of turns, input power). Then they will be built with the help of 3D printers and copper wires. On the other hand, for the S and X band communications subsystems, it will be necessary to develop link budgets in order to obtain the antenna Gain. This computation will be done with the help of MATLAB. After achieving this, the type of antenna will be selected according to the parameters obtained from the link budget. A model of the satellite antenna will be designed with the help of the electromagnetic simulation software ADS and CST. Finally, the antenna will be built and tested with the help of a vector analyzer. The final task of the project will be the analysis of the feasibility of a control mode on the AOCS subsystem that enables the satellite to point toward the Earth station with the help of the magnetorquers, thus enhancing the operation of the data link. Expected results: The expected results are the complete design, construction, and testing of both the actuators and antennas and that, after the pointing calculations, the data transmission from the spacecraft to the earth station is possible and the designs are functional. |
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Overview (resum en anglès): | |
The objective of this bachelor¿s thesis is to conduct a comprehensive analysis of the communication subsystems in the UHF, S, and X bands of the 3Cat-8 mission. This mission aims to develop a satellite under the CubeSat standard that allows the study of different physical phenomena, such as the effects of auroral emissions on wave propagation through the ionosphere. Furthermore, this project also includes the design of an S-band patch antenna, both to understand the design of a space application antenna and to implement it on the same satellite and compare it with other commercial options. In addition, the polar orbit described by the satellite results in limited opportunities for data downlink, making it necessary to design and dimension magnetic actuators to enable the satellite to point towards the ground station. This document addresses the study, design, and manufacturing of these elements in order to enable the satellite to aim its antennas at the ground station. Overall, this work represents a significant contribution to the 3Cat-8 mission. Throughout this project, various activities encompassing the fields of aerospace engineering and telecommunications have been carried out. |