bluuebunny/crossref_metadata_2025_split huggingface dataset:
From Soyuz-docking manoeuvres to microalgae cultivation: hands-on training for Master's students
Authors: Detrell Gisela , Wenzel Sebastian , Bosch Bruguera Miquel , Maheswaran Tharshan , Grass Markus , Martin Johannes , Vogel Moritz 
Published: July 2022

A strong connection between research and teaching at a university is crucial to offer students a unique opportunity to put in practice the concepts taught in theoretical lectures. At the University of Stuttgart, several hands-on training courses have been offered for eight years within the module “Selected hands-on training for space”. Those are adapted to the current research at the Institute of Space Systems. During one semester, students participate in two of the offered courses and are evaluated through an exam or a report. Three ECTS for the space specialization in the aerospace engineering Master are granted after successful completion. The limited places offered are usually filled up in matter of hours and the students’ feedback has been very positive every year. The module includes up to five different courses, depending on the semester. The Life Support Systems seminar is focused on the cultivation of microalgae, linked to the institute’s ISS Experiment photobioreactor PBR@LSR. After
learning the basic life support system concepts, the students build and conduct their own microalgae photobioreactor experiment. In the Missions Analysis practical seminar, based on the work of several PhD candidates, the participants learn and put in practice aspects of mission planning with the help of the Astos Solutions software as well as the SPICE toolkit. During the Rendezvous and Docking practical training, students learn about the operation and handling of a spacecraft. Besides theoretical lectures, guided sessions in the simulator allow to put into practice the handling of common complex procedures, audio-visual perception and motor skills. This seminar is linked to the research carried out in the SIMSKILL experiment. In the Earth Remote Sensing seminar, students learn how to handle payload data for Earth observation and their scientific evaluation. The Flying Laptop, a satellite fully built at the institute and launched in 2017, is used for this course. Finally, the research carried out in the field of electrolysers and fuel cells for space applications at the institute prompted the establishment of a training course. After deepening their knowledge on both electrolysers and fuel cells, the students prepare, carry out and evaluate various experiments. This paper presents the different training courses from our institute and their link to the current research.
ERMES: Design and preliminary simulations for an autonomous docking manoeuvre
Authors: Bortotto Alessandro , Agli Giuliano degli , Favotto Federico , Mattiazzi Fabio , Mihailovic Miroljub , Pozzato Nicola , Branz Francesco , Olivieri Lorenzo , Caon Alex , Francesconi Alessandro 
Published: July 2022

In the last decades, small satellites have played an important role in space missions. Due to their reduced dimension and costs, they became affordable to smaller companies and research laboratories to conduct scientific experiments and technological demonstrations in space. In addition, the number of these satellites has considerably increased due to their wide use in technological, scientific and commercial domains. In this scenario, autonomous architectures, as well as miniaturized mechanical subsystems for small satellites, are continuously investigated.
Experimental Rendezvous in Microgravity Environment Study (ERMES) is a student project that focuses on the simulation of an autonomous docking manoeuvres between two CubeSats mock-ups equipped with miniaturized Guidance Navigation and Control systems and mechanical docking interfaces. ERMES aims to integrate different subsystems for autonomous docking, to increase the Technology Readiness Level and to study possible applications for in-orbit servicing. This paper deals with the design and development of the tests for autonomous docking manoeuvres between two CubeSats mock-ups to be performed in a reduced-gravity environment during a parabolic flight. A Target-Chaser configuration has been selected, where the Chaser is fully active and the Target is cooperative. The Chaser is equipped with a miniaturized cold gas propulsion system with eight thrusters to control its attitude and position; in contrast, the Target has a set of three reaction wheels to control only its attitude. The tested miniaturized mechanical docking interfaces employs a probe-drogue configuration. The most demanding aspect of the development phase will be the dedicated software for the proximity navigation. The reduced-gravity conditions will be achieved during a campaign of parabolic flights thanks to the participation to the European Space Agency “Fly Your Thesis!” programme 2022.
Development of a multi-payload 2U CubeSat: the Alba project
Authors: Basana Federico , Avram Alexandru Andrei , Fontanot Francesco , Lion Luca , Francesconi Alessandro 
Published: July 2022

Alba CubeSat UniPD is a student team of University of Padova with the aim to participate to the ESA Fly Your Satellite! (FYS!) programme and to launch for the first time at University of Padova a CubeSat made by students.
The proposed mission has three independent objectives: (1) to collect in-situ measurements of the sub-mm space debris environment in LEO, (2) to study the micro-vibration environment on the satellite throughout different mission phases, (3) to do precise orbit determination through laser ranging and evaluate procedures for fast satellite Pointing, Acquisition and Tracking (PAT) from ground. The proposed technological experiments aim to obtain data that will enrich the current knowledge of the space environment and will provide precious information useful for the further development of some research projects currently performed at University of Padova.
In order to reach the objectives, in these years the activities of the teams aimed to develop a 2U CubeSat equipped with three payloads. The first payload is an impact sensor that will be placed on one of the outer faces of the satellite and will be able to count the number of debris impacting the spacecraft thus being able to measure the energy/momentum transferred to the satellite. The second one is a Commercial Off The Shelf (COTS) sensor that measures the micro-vibrations experienced by payloads in a CubeSat in different mission phases. The third one consists in a number of COTS Corner Cube Retroreflectors that will be placed onboard the satellite. Thanks to this, Satellite Laser Ranging (SLR) will be done to collect data on the satellite range and range rate using a facility currently under development at University.
This paper presents the mission objectives and motivations. In addition, the mission phases and the preliminary design of the CubeSat reached during the activities of the project are shown. Particular attention is given to the payloads which are the most challenging aspect of this project.
From BEXUS to HEMERA: The application of lessons learned on the development and manufacturing of stratospheric payloads at S5Lab
Authors: Marzioli Paolo , Frezza Lorenzo , Picci Niccolò , Palo Luigi di , Collettini Luca , Garofalo Riccardo , Bedetti Emanuele , Curianò Federico , Celesti Paola , Nunzio Clara di , Misercola Linda , Gianfermo Andrea , Graux Alessandra , Zarcone Gaetano , Piergentili Fabrizio , Santoni Fabio 
Published: July 2022

In the last years the S5Lab (Sapienza Space Systems and Space Surveillance Laboratory) from Sapienza University of Rome has given to the students the opportunity to gather knowledge on stratospheric payloads by supporting the design and development of two experiments selected for the participation in the REXUS/BEXUS educational Programme, managed by three european space institutions. The insights and lessons learned gathered during the participations in the REXUS/BEXUS educational programme gave the possibility to the student to take part in the development of a third experiment in the frame of the professional research programme HEMERA and complete it successfully. STRATONAV (STRATOspheric NAVigation experiment) was a stratospheric experiment based on Software Defined Radios (SDRs) technology whose aim was the testing of the VOR (VHF Omnidirectional Range) navigation system, evaluating its performance above the standard service volume, which was launched on BEXUS 22 in October 2016. TARDIS (Tracking and Attitude Radio-based Determination In Stratosphere) was developed as a follow up of STRATONAV between 2018 and 2019. Similarly to its predecessor TARDIS was a stratospheric experiment aimed at exploiting the VOR signal, with the aid of SDRs, to perform in-flight attitude and position determination, and was launched on BEXUS 28 in October 2019. After the launch of TARDIS, a team composed both by former STRATONAV and TARDIS students was formed for the development of a third stratospheric experiment going by the name of STRAINS (Stratospheric Tracking Innovative Systems), conceived by Sapienza University of Rome and ALTEC and supported by ASI. STRAINS main objective was the proof of concept of the possibility of achieving the Time Difference of Arrival (TDOA) and the Frequency Difference of Arrival (FDOA) for navigation purposes with the aid of SDRs. The experiment was developed between 2020 and 2021 exploiting the lessons learned from the former team members of the two BEXUS campaigns and was launched on board of the Hemera H2020 stratospheric balloon in September 2021 from Esrange Space Center, Kiruna, Sweden. After a brief description of the
stratospheric payloads design and manufacturing, the paper will present the major lessons learned from the previous stratospheric experiments, STRATONAV and TARDIS, and their application to the development and manufacturing of the latest launched stratospheric experiment STRAINS, as well as their educational return to the students involved in the projects.
Development of a proof-of-concept space propulsion system for nano-satellite applications using additive manufacturing
Authors: Chia Andy , Prabhu Vinayak , Gan An Zhi , Puah Melvin , Lek Vincent , Kiong Teoh Woik , Thow Vivian Shie 
Published: July 2022

In this project, Additive Manufacturing techniques was used to develop a proof-of-concept space propulsion system for nanosatellite applications. The main propulsion unit is made up of a metallic structural housing that is additively manufactured using aluminium powder (AlSi10Mg) on the EOS M290 machine. This housing serves as the reservoir that stores nitrogen gas as the propellant, and other components of the propellant system are assembled into it. The novel feature of the housing is that the propellant feed lines are integrated into the structure. This eliminated welds and joints typically found in conventional propellant storage tank, thereby minimizing leakage whilst simplifying assembly and integration. At the same time, the housing was designed using Design for AM techniques, and this made it possible to increase propellant storage capacity by minimizing support structures. The miniature propulsion nozzle, a key component of the propulsion system, was produced using micro-milling techniques to produce a full 3D converging-diverging profile. A secondary objective of the project was to validate this unique approach by conducting in-space validation experiments to determine the viability of AM in the development of space propulsion applications. Work is currently on-going in the assembly and integration of the proof-of-concept propulsion payload into a 1U Cubesat, where it will serve as the primary payload.
This Cubesat mission features a secondary payload which is a commercial off-the-shelf imaging sensor with M12 ruggedized lens that will be tasked with space imaging applications. The current plan is to launch the Cubesat from the International Space Station using the J-SSOD module. The project was carried out by a multi-disciplinary staff/student team comprising faculty members with domain expertise in aerospace, additive manufacturing, avionics/electronics, advanced machining, quality assurance and mechanical testing. The faculty members were
responsible for the design, development, and integration of the proof-of-concept propulsion and imaging payloads. The project also provided valuable opportunities for our students to gain hands-on experience in space and satellite engineering. The students hail from the diplomas in aerospace, aviation systems and advanced & digital manufacturing. They were co-located within the Assembly, Integration and Testing lab which features a class 10,000 clean booth. The students supported Cubesat and payload development and integration as well as mechanical testing.
Ice moon research – A phenomenon called plume
Authors: Zuegner Mario Andre 
Published: July 2022

Based on the observations of the Cassini-Huygens space exploration mission, Saturn's moon Enceladus was found to be a very promising subject in the solar system for further exploration and follow-up research, especially focusing on the potential of extraterrestrial life and its origin.
Near its South Pole, fountains, specified plumes, consisting mostly of water vapor and small salt-rich ice grains with intermittent activity were observed at the surface. With supersonic speed the water vapor is exiting the trenches known as Tiger Stripes. The driving force of these plumes are not completely understood yet. In current models, Enceladus is expected to consist of a rocky core, surrounded by an ocean of liquid water and covered by a layer of ice. The observed phenomenon is assumed to be caused by the tidal forces that act upon Enceladus. However, several models try to describe the underlying physical processes. Various investigations have recognized the astrobiological potential of Enceladus, even proposed a concept for a sample return for further research in relation to the subsurface ocean. Cassini ́s existing analysis already identified CH4, CO, CO2, simple and complex organics at an altitude of approximately 190 km which allow the assumption of supersonic speeds. That said, the goal of our experiment is to gain further indices/evidence to support the current models of the plumes. Our experiment takes place on a sounding rocket which gives access to a stable vacuum and microgravity in addition. The achieved altitude with its physical environment provides almost the conditions at Enceladus related to the gravitation. The rocket module contains a pressurized and heated water reservoir which is connected via an injection system with the evaporation chamber. On the top a convergent-divergent nozzle is welded. Furthermore a nozzle cover system and a locking mechanism are integrated. At apogee, the nozzle shall be opened and the fluid stream (assumingly made up of ice, water droplets and vapor) shall exit the module at about Mach 2. The necessary fluid-dynamic data is gathered by multiple temperature and pressure measurements at different points on the module. So, the vapor stream shall be compared to the expectations based on the models. Finally it is to mention that our project is still running and waiting for its launch. Caused through the Corona crisis and the Ukraine war the launch cycle was canceled two years in succession. With much luck the rocket will launch in March 2023.
Simulating atmospheric turbulence: Code development and educational applications
Authors: Salazar Ferran , Marzoa Domínguez Antonio , Crusellas Marc , Casamor Oriol , Mazón Bueso Jordi , Arines Justo 
Published: July 2022

Earth atmosphere turbulence affects many areas of interest related with Space studies, such as optical communications or Astronomy. In fact, it is a key topic for such applications and, thus, it is important for students in aerospace and aeronavigation studies to get some knowledge of the basis of such phenomena, and how to compensate for it. The phenomenon of turbulence is tangent to many areas such as Optics, Meteorology, Fluid Dynamics, Astronomy, Space Science and Telecommunications, among others. To properly understand the effect of such phenomena on the propagation of an optical signal is imprescindible to properly evaluate and implement the corrections introduced with Adaptive Optics [1] and for understanding the limitations of optical free-space communications channels. The simulation of optical propagation through turbulence constitutes an intuitive and powerful tool for visualizing and understanding such phenomena. Within those ideas, a Final Degree Project,
based on the development of simulation tools of atmospheric turbulence is carried out in the Escola d’Enginyeria de Telecomunicacions i Aeroespacial de Castelldefels (EETAC) of the Universitat Politècnica de Catalunya (UPC). In this communication the development of an
application, written in MATLAB®, for the simulation of optical propagation through turbulent mediums is presented.
The project consists of the development of a software based on scalar diffraction theory [2] and Kolmogorov’s turbulence theory for the generation of turbulent phases under specific meteorological conditions and the simulation of the propagation of an electromagnetic signal
through them. With this tool, different applications are going to be analysed.
As an example of application, at the moment this communication is presented, the code is capable of performing the reconstruction of the generated phase in terms of Zernike coefficients [3], providing key information for the understanding of the aberrations introduced
by the turbulence and also for correcting them with a proper design. The communication first describes the main basis of the problem, in terms of scalar diffraction theory, and the structure of the application. Later, some results are presented and discussed. Finally, the application of
the tool for adaptive optics, optical free-space communications and as an educational application for aeronavigation and aerospace students is discussed, with emphasis in the context of the different degrees, courses and subjects taught in the EETAC.
On-board image classification payload for a 3U CubeSat using machine learning for on-orbit cloud detection
Authors: Purio Mark Angelo C. , Leong Timothy Ivan , Abbas Yasir M. O. , Elmegharbel Hoda Awny , Hiraki Koju , Cho Mengu 
Published: July 2022

CubeSats are giving the opportunity for educational institutes to participate in the space industry, develop new technologies and test out new ideas in outer space. CubeSat missions are developed to perform scientific research and demonstrate new space technologies with relatively cheap cost and limited resources. This category of satellites has many limitations such as the short development time, the power consumption and the limited time and capability of data downlink. Earth Observation from a Low Earth Orbit is one of the most appealing m applications of CubeSats developed by students or non-space faring countries. Investigating new technologies to improve image quality and studying ways to increase acquisition adequacy is very promising. This paper aims to introduce a mission hardware design and machine learning-based algorithm used within an Earth Observation (EO) CubeSat. The case study of this paper is Alainsat-1 project which is a 3U CubeSat developed with the support of IEEE Geo-science and Remote Sensing Society (GRSS) at the National Space Science and Technology Center, UAE. The satellite is planned to be launched by 2022. A low-resolution Commercial off-the-shelf (COTS) camera for EO is developed as a primary mission in this
CubeSat. The compatible hardware design and software algorithm proposed is responsible for classifying the images captured by the camera into different categories based on cloud intensity detected in these images before downloading them to the ground station. A microcontroller-based architecture is developed for controlling the mission board; it is responsible for accessing the memory, reading the images, and running the cloud detection algorithm. The cloud detection algorithm is based on a U-net architecture while the algorithm is developed using a Tensor-flow library. This model is trained using a dataset of images taken from the Landsat 8 satellite project. Moreover, the SPARCS cloud assessment dataset is used to evaluate the developed model on a new set of images. The overall accuracy achieved by the model is around 85% in addition to the acceptable performance of the model observed on a set of low-resolution images. The plan is to make the design modular and optimize its
performance to be used on-board CubeSats fulfilling the size constraint and overall power consumption limitation of an add-on module to a camera mission.
Revalorando el barrio informal de la Indepe en Monterrey, México
Authors: Garza Andonie Cecilia 
Published: July 2022

La Colonia Independencia en Monterrey, México, localmente conocida como la Indepe, es un barrio informal que ha visto inmerso en el crecimiento descontrolado de la urbe. Con sus orígenes desde la colonización española, el Río Santa Catarina y el cuerpo montañoso de la Loma Larga dividen la ciudad en distintas instancias. Se pronuncian como bordes, fragmentando las tramas urbanas y sociedades segregadas con realidades económicas opuestas.La investigación se logró mediante dos fases: la primera de una revisión teórica y la segunda de investigación en campo. Se identifican dos intersticios como oportunidad de hilar los distintos fragmentos urbanos de reticular, a informal, a lineal en relación al territorio. El trabajo es producto de una tesina, y sus resultados se dirigen a los ayuntamientos de San Pedro Garza García y Monterrey ante la latente falta de inclusión y valorización de la Colonia Independencia en la metrópoli capitalina.
Colonia Independencia in Monterrey, Mexico, locally known as the Indepe, is an informal neighborhood that has been immersed in the uncontrolled growth of the city. With its origins since the Spanish colonization, the Santa Catarina River and the mountainous body of the Loma Larga divide the city into different instances. They pronounce themselves like edges, fragmenting the urban plots and segregating societies with opposite economic realities. The research was achieved through two phases: the first of a theoretical analysis and the second of in-field research. Two interstices are identified as an opportunity to link together the different urban fragments of reticular, to informal, to linear in relation to the territory. The work is the product of a dissertation, and its results are directed to the municipalities of San Pedro Garza García and Monterrey before the latent lack of inclusion and valorization of Colonia Independencia in the capital city.