52 research outputs found
ESA/ELGRA gravity-related research summer school
Peer ReviewedPostprint (published version
ESA/ELGRA Gravity-Related Research Summer School
The European Low Gravity Research Association
(ELGRA) and the European Space Agency (ESA) Education
Office co
-organi
se at the ESA Academyâs Training and Learning
Centre in ESA
-ESEC,
Belgium,
a Summer S
chool on gravity
-
related research since 2016. This Summer School explains the
fundamentals of performing research at different gravity levels
and
offers an overview of current research activity
under
microgravity and hypergravity conditi
ons in life and physical
sciences. Over four and a half
intensive
days
, 22
Bachelors or
Masters students from ESA member and associate states
attend
stimulating lectures
, and work within small groups to devise
project
ideas for prospective experiments. Gra
vity
-related
research is introduced to these future scientists and engineers by
experienced professionals from across the
European space
and
research
sector. These
professional trainers are ELGRA and ESA
experts, freely sharing their experience and know
-ho
w with the
students, including their day
-to
-day work and research experience
in biology, human physiology, and physics.
Many different
scientific topics are addressed during
the school
including:
solidification
, fluid
dynamics
, heat
and mass transfer, spaceflight
analogues,
animal models,
cell
biology,
growth of plants, a
rtificial
gravity
for
astronaut countermeasure
s and s
pace
adaptation.
Each year the programme incorporates new elements to enhance
the experience for the students based on their feedback.Peer ReviewedPostprint (published version
ESA/ELGRA Gravity-Related Research Summer School: an introduction to microgravity and hypergravity research for university students
The European Low Gravity Research Association (ELGRA) and the European Space Agency (ESA) co-organise since 2016 a Summer School on gravity-related research in the frame of ESA Academyâs Training and Learning Programme. This Summer School is organised every year, in June, at the ESA Education Training Centre located in ESAâs European Space Security and Education Centre (ESEC), Belgium. The Summer School explains the fundamentals of performing research at different gravity levels and offers an overview of current research activity under microgravity and hypergravity conditions in life and physical sciences. Over four and a half intensive days, up to 30 Bachelor and Master students from ESA Member States, Canada and Slovenia, attend stimulating lectures, and work within small groups to devise project ideas for prospective experiments. Gravity-related research is introduced to these future scientists and engineers by experienced professionals from across the European space and research sector. These trainers are ELGRA members and ESA experts, freely sharing their experience and know-how with the students, including their day-to-day work and research experience in biology, human physiology, physics and engineering. Each year the programme incorporates new elements to enhance the experience for the students based on their feedback. 104 university students and 43 different experts have already participated in this Summer School.The Summer School is a jointly funded initiative from the European Space Agency (ESA) and the European Low Gravity Research Association (ELGRA).Peer ReviewedPostprint (author's final draft
The Student Aerospace Challenge: a european multidisciplinary contest and tertiary educational programme
Inspired by the first successful tests of a private manned spaceplane in 2004, the Student Aerospace Challenge was created in 2006 by the European Astronaut Club and its partners - Dassault Aviation, the European Space Agency, the International Astronautical Federation, Safran and Thales at the time - to allow European university students to explore some aspects of manned suborbital vehicles. Until 2020, the Challenge focused on a local reusable vehicle reaching Mach 3.5 and an altitude of 100 km. Since the 15th edition, to better respond to the evolution of the sector, a second vehicle is proposed: a hypersonic vehicle dedicated to point-to-point transportation taking, for example, less than two hours to travel from Barcelona to Tokyo. Each year, the Steering Committee defines several work packages corresponding to a large variety of study domains realistically related to this type of innovative vehicles like aerodynamic and flight control, structure, reusable propulsion, airworthiness, promotion, market analysis, legal frame & medicine. The introduction of a second vehicle having a quite different mission led the Committee to introduce dedicated topics. In addition, for the current edition, a new work package was proposed to cover potential applications of suborbital flights other than carrying passengers. In function of their background and interest, European University students have the opportunity to work, during several months, on a topic related to one of the work packages and to explore new solutions. Proposed projects should be technically realistic, economically viable and environmentally friendly. Reports and posters issued by student teams are evaluated by the Steering Committee some weeks before the âSuborbital Dayâ, a dedicated event organised like a mini-symposium, usually on-site where students present orally their projects and meet representatives of the different partners. The best-quoted projects are rewarded with prizes, among them, the ESA Grand Prize offering the winner team the unique opportunity to present their project in an appropriate European space-related event. To date, 216 teams and 998 University students coming from all over Europe already took part in the Student Aerospace Challenge, a motivating and ambitious multidisciplinary educational programme. Their participation allowed them to complement their knowledge, learn new skills and enlarge their network in the space secto
ESA Academy activities during COVID-19
The ESA Academy is the ESA Education Officeâs overarching programme for university students. The Academyâs portfolio consists of both âhands-onâ activities, and a Training and Learning Programme. Conventionally both of these elements involve a significant number of in person events, for example training sessions, workshops and test and launch campaigns. The educational nature and practical aspects of such events has traditionally necessitated in person participation. Additionally, most of the Academyâs âhands-onâ programmes revolve around student teams designing, building, testing and operating an experiment or spacecraft, activities which rely on the availability and delivery of commercial components, and access to manufacturing, testing and launch facilities, and laboratories. In March 2020, as the COVID-19 pandemic, and associated restrictions, began to take hold in Europe, nearly all the ESA Academy programmes were affected. Despite the challenges, the Academy continued to deliver activities, and the student teams participating in the Academyâs programmes continued to achieve major milestones, including launching experiments to the ISS, CubeSat testing and launch and execution of micro- and hyper-gravity experiments. This paper explores the challenges faced during COVID-19 and how both the programmes and the students participating in the programmes adapted to meet their educational, scientific, and technical goals. Furthermore, the longer-term adaptation of some of these changes into the future execution of the programmes is discusse
Development, experimental study and visualization by digital holography of mini fluidic separators (STEP-SPLITT) in order to separate micron-size species
Cette thĂšse expĂ©rimentale sâinscrit dans le domaine des sciences sĂ©paratives et se base sur la technique de SPLITT (SPLIT-flow Thin fractionation). Son objectif consiste en lâĂ©tude des mĂ©canismes qui sont Ă lâorigine de la sĂ©paration, en continu et sans membrane, dâobjets de taille micromĂ©trique dans des mini-sĂ©parateurs fluidiques (Step-SPLITT). Les expĂ©riences menĂ©es, en laboratoire et lors de vols paraboliques, ont rĂ©vĂ©lĂ© le couplage complexe comme lâinfluence des effets hydrodynamiques et du champ gravitationnel sur la migration transverse des espĂšces en Ă©coulement. Des visualisations tridimensionnelles par holographie digitale ont corroborĂ© nos rĂ©sultats et dĂ©voilĂ© des comportements inattendus. Les capacitĂ©s sĂ©paratives des Step-SPLITT ont rendu possible lâanalyse et la sĂ©paration dâobjets biologiques et biomimĂ©tiques. Enfin, cette Ă©tude complĂ©tĂ©e par une modĂ©lisation tridimensionnelle de lâĂ©coulement nous a permis de mettre au point un nouveau prototype de sĂ©parateur.<p><p>This experimental thesis belongs to the field of separative sciences and is based on the SPLITT technique (SPLIT-flow Thin fractionation). The objective is to study the mechanisms that are at the origin of continuous and membraneless separation of micron-size species in mini fluidic separators (Step-SPLITT). Experiments undertaken in laboratory and during parabolic flights revealed the complex coupling of the hydrodynamic effects and the gravitational field influencing the transverse migration of the flowing species. Three-dimensional visualizations performed by digital holography confirmed our results and disclosed unexpected behaviours. The separation capacities of Step-SPLITT made the analysis and the separation of biological and biomimetic species possible. In addition this study in conjunction with a three-dimensional flow modelling enabled us to develop a new prototype of separator.Doctorat en sciences appliquĂ©esinfo:eu-repo/semantics/nonPublishe
Development, experimental study and visualization by digital holography of mini fluidic separators (STEP-SPLITT) in order to separate micron-size species
Cette thĂšse expĂ©rimentale sâinscrit dans le domaine des sciences sĂ©paratives et se base sur la technique de SPLITT (SPLIT-flow Thin fractionation). Son objectif consiste en lâĂ©tude des mĂ©canismes qui sont Ă lâorigine de la sĂ©paration, en continu et sans membrane, dâobjets de taille micromĂ©trique dans des mini-sĂ©parateurs fluidiques (Step-SPLITT). Les expĂ©riences menĂ©es, en laboratoire et lors de vols paraboliques, ont rĂ©vĂ©lĂ© le couplage complexe comme lâinfluence des effets hydrodynamiques et du champ gravitationnel sur la migration transverse des espĂšces en Ă©coulement. Des visualisations tridimensionnelles par holographie digitale ont corroborĂ© nos rĂ©sultats et dĂ©voilĂ© des comportements inattendus. Les capacitĂ©s sĂ©paratives des Step-SPLITT ont rendu possible lâanalyse et la sĂ©paration dâobjets biologiques et biomimĂ©tiques. Enfin, cette Ă©tude complĂ©tĂ©e par une modĂ©lisation tridimensionnelle de lâĂ©coulement nous a permis de mettre au point un nouveau prototype de sĂ©parateur.This experimental thesis belongs to the field of separative sciences and is based on the SPLITT technique (SPLIT-flow Thin fractionation). The objective is to study the mechanisms that are at the origin of continuous and membraneless separation of micron-size species in mini fluidic separators (Step-SPLITT). Experiments undertaken in laboratory and during parabolic flights revealed the complex coupling of the hydrodynamic effects and the gravitational field influencing the transverse migration of the flowing species. Three-dimensional visualizations performed by digital holography confirmed our results and disclosed unexpected behaviours. The separation capacities of Step-SPLITT made the analysis and the separation of biological and biomimetic species possible. In addition this study in conjunction with a three-dimensional flow modelling enabled us to develop a new prototype of separator.Doctorat en sciences appliquĂ©esinfo:eu-repo/semantics/nonPublishe
Développement, étude expérimentale et visualisation par holographie digitale de mini-séparateurs fluidiques (STEP-SPLITT) en vue de la séparation d'objets de taille micrométrique
PARIS-BIUSJ-ThĂšses (751052125) / SudocPARIS-BIUSJ-Physique recherche (751052113) / SudocSudocFranceF
Fast measurements of concentration profiles inside deformable objects in croflows with reduced spatial coherence digital holography
info:eu-repo/semantics/publishe
- âŠ