- Muchas notas - Fran Acién

20220131 - 1o DTU MSc Electrical Engineering - 2o Cuatri

Hora Monday Tuesday Wednesday Thursday Friday
8-12 X-tech (?) Space Systems Engineering Spacecraft Instrumentation
13-17 Spacecraft Instrumenstation X-tech (?)
18-22

Spacecraft Instrumentation Systems

  • WHEN: 13:00 Mondays (Special sessions), 8:00 Thursdays (Theory)
  • WHERE: Building 328 First floor, 123 classroom
  • Professor: John
  • Evaluacion: There is no exam, you handin a report with a team of 3-5. 35-40 pages from EACH team member.

Gente con la que estoy en clase: Jonas (chaval con gafas que también estaba en spacecrafts), Nina (alemana rubia)

Resulta que jonas estuvo trabajando con René en el desarrollo del DTUSAT 3, que parece que está un poco inactivo.

In this course we need to say if it is feassible. We study the technologies, but we don’t replicate any technology, we are trying to create a new one from scratch.

Antenna array correlator:

X-Tech (?)

  • WHEN: Tuesdays 7:50, Friday 12:50
  • WHERE: Skylab
  • TEAM: 23, Jan (Mechanical and organizing), Nicolas (Mechanical and innovation), Luci (Product design in intership) and Sathma (Indian girl). The person from the company is stephan.

Fechas importantes:

  • 19 mayo: Final presentation

Cosas importantes:

Things we need to submit for evaluation:

  • Project status - 29 April
  • Exam - 26 April
  • Poster - 19 May
  • Business Plan - 10 May -> It is exactly the presentation but with some anexos with information about where did you find the info.
  • Lions den - 19 May

Space Systems Engineering

  • WHEN: Wednesdays 8-12
  • WHERE: 328/123

Gente con la que estoy en clase: Jonas (El de spacecraft Instrumentation Systems). Aldo(rubio) y David (barba y coletilla negra) (los italianos del grupo). Rima, la chavala que se sienta delante. Adam, el amigo de los americanos.

Project:

  • In orbit pulsar based investigation

Important dates:

  • 20th April: PDR
  • 17th May: Combined written report
  • 24th May: Oral exam - individual group presentation

Links for the project:

Important notes during the lectures, because then I forget some important things:

  • One mission going to mars
  • Other mission going to the moon
  • At least the complexity of TRL9, more complex missions CIS/Lunar, Asteroid by fly
  • The ADCS put some datarates, that are in the discord

Class 4th may:

  • ADCS team have shown a rotor of the antenna that is 5 Kg, it is SWaP

We need to decide if we are going to use a gimball for the antenna or not. Some questions that can guide us in the process:

  • Communication windows: How often? How long?
  • Thruster turn on and turn off: Is it possible? How much time can we turn off the thruster? How much time can be turned off?
  • Heritage
  • Mass
  • Cost
  • Complexity

The conclusion is that it going to be fixed. The communication is going to be every 12 hours. We need to think in storage, what happen if we miss one pass?

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As the reflector array is only for tx, it is neccessary a rx antenna. We are going to use a patch array for a low gain antenna. It is described in page 49 of cubesat antenna design. We are going to use only one patch, so is half of 1U.

In the final report there are two sections, the trade offs and the final design. the trade off we need to put all our work during the course, and in the final design we need to put the final requirements of the spacecraft. For my part the link budget, I put everything in the tradeoffs, and then the final requirements in the final design. This report is not with a lot of theory.

DTU Ground Station

I am planning to have a special course in the DTU Ground station.