Latest Space News
Tue, 11 Dec 2018 21:54:27 +0000
Virgin Galactic plans to perform the next test flight of its SpaceShipTwo suborbital spaceplane as soon as Dec. 13, a flight that could be the first by the vehicle to reach at least one definition of space. SpaceNews.com
Tue, 11 Dec 2018 18:32:51 +0000
As a founder and chief strategy officer of ATLAS Space Operations, a satellite data communications company that has been doing this very same thing for the past four years, you might think I’d be a little nervous to see Amazon enter the industry. But I’m not. SpaceNews.com
Tue, 11 Dec 2018 09:56:03 +0000
With both the current Congress and his political career nearing their ends, Sen. Bill Nelson (D-Fla.) said Dec. 10 he’s continuing to fight to extend operations of the International Space Station through the end of the next decade. SpaceNews.com
Mon, 10 Dec 2018 18:27:02 +0000
Aerospace CEO Isakowitz: The government traditionally buys a bus, payload and ground segment as a package, he said. That does not give you flexibility to swap out and change pieces. SpaceNews.com
Mon, 10 Dec 2018 17:32:45 +0000
As NASA’s Voyager 2 spacecraft enters interstellar space, project officials have high hopes that it and its twin spacecraft will continue to operate for as long as a decade. SpaceNews.com
Mon, 10 Dec 2018 17:17:23 +0000
Spacecraft manufacturers have complained of stress on their supplier base as operators purchase fewer traditional geostationary satellites. One company in France is bucking that trend, however. SpaceNews.com
Mon, 10 Dec 2018 11:27:24 +0000
A NASA spacecraft originally built as part of the previous effort to return humans to the moon is now playing a key role in the new effort at human lunar return, including aiding commercial landers. SpaceNews.com
Mon, 10 Dec 2018 08:50:51 +0000
Planet's employees, customers and investors paint a picture of a company growing steadily while seeking to dramatically expand the market for data captured via satellite. SpaceNews.com
Mon, 10 Dec 2018 08:00:15 +0000
Two consulting firms anticipate strong demand for commercial Earth observation products and services in the next decade as satellite constellations offer an increasing array of optical, radar, hyperspectral and video imagery and data. SpaceNews.com
Sun, 09 Dec 2018 12:25:35 +0000
In recent years, there has been a boom of announcements for satellite constellations comprising satellites weighing as little as 3 kilograms to address a growing market of machine-to-machine (M2M) and Internet of Things (IoT) via satellite. SpaceNews.com
Fri, 07 Dec 2018 23:03:07 +0000
In an interview, Axelspace Chief Business Development Officer Yasunori Yamazaki, said the funding will enable the company of 65 people to continue building a constellation called AxelGlobe, though the company hasn’t decided on a final size for the constellation. SpaceNews.com
Fri, 07 Dec 2018 22:32:49 +0000
With a two-week extension of the stopgap spending bill funding much of the federal government enacted, the outgoing chairman of the House appropriations subcommittee that funds NASA says he’s hopeful to get a final spending bill approved before that bill expires. SpaceNews.com
Fri, 07 Dec 2018 21:09:10 +0000
China launched its Chang’e-4 moon mission Dec. 7, successfully sending the lander and rover into a lunar transfer orbit ahead of an unprecedented attempt at a landing on the far side of the moon early in the New Year. SpaceNews.com
Fri, 07 Dec 2018 20:17:37 +0000
The new launch date, announced Dec. 7 by customer Iridium Communications, was driven by the additional two weeks SpaceX ended up needing to launch Spaceflight Industries’ “SmallSat Express” dedicated rideshare mission. SpaceNews.com
Fri, 07 Dec 2018 12:03:51 +0000
While a SpaceX commercial crew test flight might not launch on a date in early January previously announced NASA, both agency and company officials are optimistic the mission will still fly later in the month. SpaceNews.com
Thu, 06 Dec 2018 23:10:23 +0000
During a Q&A session at a U.S. Chamber of Commerce summit to promote the space industry as an engine of innovation and economic growth, Griffin said he does not know when or how a new military branch will be organized. SpaceNews.com
Thu, 06 Dec 2018 21:55:50 +0000
Maxar Technologies sold one of satellite manufacturer Space Systems Loral’s facilities in Silicon Valley for $70 million, the company announced today. SpaceNews.com
Thu, 06 Dec 2018 21:34:19 +0000
A test flight in Alaska of a small launch vehicle by a stealthy startup company ended in failure in late November, the FAA has revealed. SpaceNews.com
Thu, 06 Dec 2018 21:19:28 +0000
President Trump has been insistent that a Space Force should be a completely independent military department. One way to organize the new service would be by establishing a Space Force under a larger Department of the Air and Space Force. SpaceNews.com
Thu, 06 Dec 2018 18:42:11 +0000
British satellite operator Inmarsat announced Dec. 5 it will be the first commercial customer of the next-generation H3 rocket from Mitsubishi Heavy Industries of Japan. SpaceNews.com
More space news...
18965 cvs - 873 jobs

LOOKING FOR A JOB?

  • HOME
  • POST YOUR CV
  • JOB SEARCH
  • LOOKING FOR STAFF?

  • HOME
  • REGISTER
  • CV SEARCH
  • POST JOBS
  • Internal Research Fellow (PostDoc) in Prediction of contamination effects due outgassing

     


     

    BACK to the Job Search

    Job Description
    TitleInternal Research Fellow (PostDoc) in Prediction of contamination effects due outgassing
    Job code8381
    Job posted on22/11/2018 (modified on 06/12/2018)
    LocationNoordwijk
    CountryNetherlands
    EducationPHD
    Contract typeTemp/contract
    Start dateimmediately
    Job Description

    Research Fellow opportunity in the Directorate of Technology, Engineering and Quality.

    ESA is an equal opportunity employer, committed to achieving diversity within the workforce and creating an inclusive working environment. Applications from women are encouraged.

     

    Post

    Internal Research Fellow (PostDoc) in Prediction of contamination effects due outgassing

    This post is classified F2 on the Coordinated Organisations’ salary scale.

     

    Location


    ESTEC, Noordwijk, The Netherlands  

     

    Description

    The Materials Physics & Chemistry Section operates state-of-the-art space simulation facilities (vacuum, temperature, EM and particle radiation, etc.) as well as instruments to characterise physical and chemical properties within the materials and EEE components laboratory. It provides engineering support to all ESA projects and development programmes in the area of materials physics and chemistry, associated processes and environmental effects.

    What we do:

    • physical analysis and characterisation of materials including phase transitions, thermo-mechanical analysis, thermo-optical analysis, thermal analysis, surface analyses such as electron-based imaging techniques (SEM/EDX/WDX), X-ray techniques such as X-ray tomography and other  non-destructive evaluation techniques;

    • chemical analysis and characterisation of materials (all types of spectroscopy such as UV-VIS-NIR, GCMS, NMR, FTIR, Raman, thermal analysis, surface analysis such as XPS, EDX,WDX, contact angle);

    • cleanliness and contamination control, including lab work focused on contamination monitoring, materials outgassing characterisation, surface analysis and evaluation of contamination impacts on performance;

    • environmental evaluation (ground/space effects) including lab testing work and support of non-conformance reviews, requests for approval; this includes evaluation of degradation effects due to (long-term) storage and corrosion, biodegradation, entry/re-entry assessment of physical/chemical processes and other processes;

    • performance prediction and verification (incl. in-orbit & post-flight analysis) of materials and associated processes.

    Interested candidates are highly encouraged to visit ESA website: www.esa.int

     

    Field(s) of activities/research

    Prediction of contamination effects due to outgassing

    During exposure to a vacuum, especially at elevated temperature levels, volatile chemicals contained in many spacecraft components (e.g. CFRP panels, adhesives, harness) may over time migrate to the surface via diffusion and escape via desorption. In extreme temperature environments, organic materials even tend to decompose into simpler substances, which may then outgas through desorption or diffusion. The combination of these processes, called outgassing, is then a function of time and temperature.

    Outgassed molecules may then condense on cold parts of a spacecraft and build up on sensitive surfaces that can decrease the performance levels of instruments, equipment and in some cases entire subsystems, and may even cause mission failure outright. Evaluating deposited contamination masses on sensitive surfaces is therefore a key task in evaluating spacecraft (and/or instrument) performance loss.

    For this purpose, ground testing is needed to assess mass loss and build-up. Since ground tests cannot be run for durations comparable to mission lifetimes, they have to be performed at an accelerated rate. The ESA materials laboratory has a number of dynamic outgassing facilities to measure material mass loss and condensed mass as a function of time and temperature.

    As for the outgassing itself, although its chemistry can be fairly complex, the kinetics are well understood, which allows reliable long-term predicting of total mass loss from data obtained in accelerated tests, via a physics-based model (ECSS-Q-TM-70-52A).

    On the other hand, the build-up of contamination on a given surface is a complex process dependent on many factors which affect both the incoming flux of molecules from the contamination sources impinging on the target surface and the outgoing flux of molecules from the target surface due to re-emission. Translating accelerated test results into long-term predictions for incoming flux is not a huge challenge. However, when considering the outgoing flux of molecules, things get much more complicated, given that there are no good kinetic models and the chemistry is not well understood. Different approaches have been proposed in the past, none having been considered entirely adequate to date.

    This research topic aims at developing a method that would allow reliable use of the results obtained in accelerated tests to calculate long-term predictions for mass build-up on cold surfaces due to material outgassing.

    Under this activity, the Research Fellow is required to perform an extensive assessment and evaluation of the dynamic outgassing data that have been collected for over 20 years on a wide variety of materials, lately accompanied by in situ thermos-gravimetric analyses and ex situ GC/MS analyses of the condensed material. The candidate should first investigate the potential of these latter techniques analytically and/or by testing and then compare them with other possible techniques that could have high potential. The incumbent should then identify the most promising technique or set of techniques and on that basis develop, optimise and verify a methodology allowing reliable long-term prediction of contamination build-up, starting with data collected in accelerated tests. The optimisation process will aggregate the mathematical model, the ground test results (test facilities, chambers) with available 3D modelling tools (COMOVA, SYSTEMA, etc.) in order to predict the interaction of space-grade materials with the vacuum/time/temperature environment.

     

    Technical competencies

    Ability to conduct research autonomously

    Breadth of exposure coming from past and/or current research/activities

    Research/publication record

    Knowledge relevant to the field of research

    General interest in space and space research

    Ability to gather and share relevant information

     

    Behavioural competencies

    Innovation & Creativity

    Continuous Learning

    Relationship Management

    Self Motivation

    Communication

    Problem Solving

    Cross-Cultural Sensitivity

     

    Education

    Applicants should have recently completed, or be close to completing, a PhD in computational physics/chemistry, (mathematical) materials science, applied mathematics.  Preference will be given to applications submitted by candidates within five years of being awarded their doctorate.

     

    Additional requirements

    Specific requirements:

    • good mathematical background

    • good knowledge of modelling techniques (mass transfer-related modelling would be an asset)

    • ability to interpret experimental results

    In addition, applicants should demonstrate good interpersonal skills and the capacity to work both independently and as part of a team. During the interview the candidates’ motivation and overall professional perspective/career goals will also be explored.

    The working languages of the Agency are English and French. A good knowledge of one of these is required. Knowledge of another Member State language would be an asset.     

     

    Other information

    For behavioural competencies expected from ESA staff in general, please refer to the ESA Competency Framework.
    The Agency may require applicants to undergo selection tests.

     

     The closing date for applications is 02 January 2019.

     

    In addition to your CV and your motivation letter, please add your proposal of no more than 5 pages outlining your proposed research. Candidates must also arrange for three letters of reference to be sent by e-mail, before the deadline, to temp.htr@esa.int. The letters must be sent by the referees themselves. The candidate’s name must be mentioned in the subject of the email.

    If you require support with your application due to a disability, please email contact.human.resources@esa.int.

    -----------------------------------------------------------------------------

    Please note that applications are only considered from nationals of one of the following States: Austria, Belgium, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Luxembourg, the Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden, Switzerland, the United Kingdom and Canada and Slovenia as well as Bulgaria, Cyprus, Latvia, Lithuania, Slovakia as European Cooperating States (ECS).

     Priority will first be given to candidates from under-represented Member States.

    In accordance with the European Space Agency’s security procedures and as part of the selection process, successful candidates will be required to undergo basic screening before appointment

     

    Apply HERE

    Contact information
    CompanyEuropean Space Agency
    Address8-10 rue Mario Nikis
    Paris
    France
    75738
    Emailplease see above for application instructions
    Web Pagehttp://www.esa.int/


    View all jobs from European Space Agency >>

     
    Terms & ConditionsCopyright ©2018 Spacelinks
    Web Analytics