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Internal Research Fellow PostDoc in Prediction of contamination effects due outgassing

2018-11-22 12:30:02| Space-careers.com Jobs RSS

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 stateoftheart 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, thermomechanical analysis, thermooptical analysis, thermal analysis, surface analyses such as electronbased imaging techniques SEMEDXWDX, Xray techniques such as Xray tomography and other nondestructive evaluation techniques chemical analysis and characterisation of materials all types of spectroscopy such as UVVISNIR, 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 groundspace effects including lab testing work and support of nonconformance reviews, requests for approval this includes evaluation of degradation effects due to longterm storage and corrosion, biodegradation, entryreentry assessment of physicalchemical processes and other processes performance prediction and verification incl. inorbit postflight analysis of materials and associated processes. Interested candidates are highly encouraged to visit ESA website www.esa.int Fields of activitiesresearch 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 andor instrument performance loss. For this purpose, ground testing is needed to assess mass loss and buildup. 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 longterm predicting of total mass loss from data obtained in accelerated tests, via a physicsbased model ECSSQTM7052A. On the other hand, the buildup 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 reemission. Translating accelerated test results into longterm 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 longterm predictions for mass buildup 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 thermosgravimetric analyses and ex situ GCMS analyses of the condensed material. The candidate should first investigate the potential of these latter techniques analytically andor 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 longterm prediction of contamination buildup, 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 spacegrade materials with the vacuumtimetemperature environment. Technical competencies Ability to conduct research autonomously Breadth of exposure coming from past andor current researchactivities Researchpublication 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 CrossCultural Sensitivity Education Applicants should have recently completed, or be close to completing, a PhD in computational physicschemistry, 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 transferrelated 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 perspectivecareer 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 email, before the deadline, to temp.htresa.int. The letters must be sent by the referees themselves. The candidates 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.resourcesesa.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 underrepresented Member States. In accordance with the European Space Agencys security procedures and as part of the selection process, successful candidates will be required to undergo basic screening before appointment Apply HERE

Tags: research due effects internal

 

Internal Research Fellow PostDoc in Advanced Requirements Engineering for Space Systems

2018-11-12 11:30:23| Space-careers.com Jobs RSS

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 Advanced Requirements Engineering for Space Systems This post is classified F2 on the Coordinated Organisations salary scale. Location ESTEC, Noordwijk, The Netherlands Description The Software Systems Division deals with development techniques for space systems, in particular in the functional domain. This covers all lifecycle aspects from requirements specification to development, verification and validation. It covers missioncritical software, with relevant software technology for flight as well as ground systems. Increased importance is being devoted to the Requirements Engineering RE process and, for the functional domain in particular, to the link between system and SW specifications. This highlights the importance of a wellcontrolled requirements engineering process at all levels. Currently ESA spacecraft requirements are highly diverse across all projects, whereas they ought to be streamlined and made consistent, to reduce the industrial effort, make it more systematic and favour product lines. RE activities targeting the requirements content as opposed to configuration management or exchange look at possible ontologies. Creating ontologies from scratch is workintensive, with no guarantee as to its feasibility currently. Instead, starting from existing requirement documents and trying to derive generic requirements from them could be more efficient. This has been done in the railway sector and also at NASA. It can be done using classic Natural Language Processing NLP techniques. Artificial Neural Networks ANN can also be used to analyse natural language. For example, Hopfield networks or Restricted Boltzman Machine RBM can be used to classify requirements denoising autoencoders can be used to capture the essence of the semantic for requirements Deep Belief Networks DBN can be used to generate similar requirements Deep Convolutional Inverse Graphics Networks DCIGN can be used to rewrite requirements in harmonised ways. Interested candidates are highly encouraged to visit ESA website www.esa.int Fields of activitiesresearch The Research Fellows task will be to use ESA requirements documents e.g. spacecrafts System Requirements Documents as well as ECSS standards to exploit the Neural Network or related AI possibilities to analyse the documents, generate a term glossary, classify the requirements accordingly, support their reorganisation and streamlining, and possibly regenerate them in the form of generic documentation of ESA missions. Technical competencies Ability to conduct research autonomously Breadth of exposure coming from past andor current researchactivities Researchpublication 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 CrossCultural Sensitivity Education Applicants should have recently completed, or be close to completing, a PhD in computer science, modelling methods, or systems requirements engineering. Preference will be given to candidates awarded their doctorate within past five years. Additional requirements 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 10 December 2018. 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 email, before the deadline, to temp.htresa.int. The letters must be sent by the referees themselves. The candidates 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.resourcesesa.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 underrepresented Member States. In accordance with the European Space Agencys security procedures and as part of the selection process, successful candidates will be required to undergo basic screening before appointment Apply HERE

Tags: advanced research systems space

 
 

BIFM Fellow members celebrate their partnership with The Worshipful Company of Patternmakers

2018-10-30 12:43:00| BIFM News

Tags: company members partnership fellow

 

Internal Research Fellow PostDoc on EO Agriculture

2018-10-25 19:25:36| Space-careers.com Jobs RSS

Research Fellowship Opportunity in the Directorate of Earth Observation Programmes. 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 on EO Agriculture This post is classified F2. Location ESRIN, Frascati, Italy Our team and mission The postholder will report to the Head of the Applications Section in the Data Applications Division within the Science, Applications and Climate Department of the Directorate of Earth Observation Programmes. In the execution of the tasks, the postholder will work in close cooperation with other staff of the Directorate of Earth Observation Programmes. The Data Applications Division is a dynamic team leading research and innovation activities, in partnership with European and international industry and academia, aiming at advancing science, developing novel applications, supporting industry growth and contributing to establish an European ecosystem of exploitation platforms to maximize the impact of European missions in society. In the coming year activities in the area of applications will focus particularly on exploitation of data from the existing Sentinel missions as well as the preparation of the Copernicus evolution. Interested candidates are encouraged to visit the ESA website www.esa.int Fields of activitiesresearch The successful candidate will, in this context, conduct research in the following domains Develop and demonstrate algorithms based on Sentinel 2 and 1 observations for agricultural monitoring, in particular for yield estimation and agricultural practices Participate in the development of products and applications related to EO for agriculture, e.g. for the upcoming Common Agriculture Policy. Support the consolidation of mission requirements for crop monitoring in the frame of the preparation for the Copernicus candidate mission LSTM Land Surface Temperature Monitoring In addition the candidate will also Liaise with project teams and endusers of relevant ESA RD projects Contribute as appropriate o preparation of training materials, training events, and stakeholders consultation workshops, Publish results in relevant scientific journals and present at relevant ESA conferences and workshops. Technical competencies Knowledge relevant to the field of research Researchpublication record Ability to conduct research autonomously Behavioural competencies Innovation Creativity Communication Self Motivation Problem Solving Education Applicants must have completed their PhD or equivalent studies in Physics, Engineering or Earth Science with research experience and peerreviewed publications in relevant topics for the fields of research proposed. Additional requirements Experience with computing programing and relevant offtheshelf EO image processing tools, EO Platforms e.g. DIAS and software will be an asset. The position requires also stateofart knowledge on analysis and processing methods for data from missions such as Sentinel2 and some knowledge of Sentinel1. Applicants should have good analytical and communication skills and should be able to work autonomously in a multicultural team environment. 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 30 November 2018. In addition to your CV and your motivation letter, please add your proposal of no more than 5 pages outlining your proposed research in the additional documents field of the application information section. Candidates are asked to arrange for 3 reference letters, to be sent by the referees themselves, before the closing date to temp.htresa.int. Please ensure your name is mentioned in the subject of the email. If you require support with your application due to a disability, please email contact.human.resourcesesa.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 underrepresented Member States. In accordance with the European Space Agencys security procedures and as part of the selection process, successful candidates will be required to undergo basic screening before appointment Apply HERE

Tags: research internal agriculture fellow

 

Internal Research Fellow PostDoc in Radio Navigation

2018-10-25 16:26:28| Space-careers.com Jobs RSS

Research Fellowship 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 Radio Navigation This post is classified F2 on the Coordinated Organisations salary scale. Location ESTEC, Noordwijk, The Netherlands Our team and mission The Radio Frequency RF Systems Division provides expert support to ESA programmes in the RF system and technology domains, which include navigation, telecommunication, Earth observation and science. It contributes to the technological development of the Agency. It runs the associated laboratory facilities and manages the associated investments. The Radio Navigation Systems and Techniques Section covers radio navigation techniques and technologies, elements and subsystems capable of generating, receiving, exploiting and analysing the signals from the current and upcoming radio navigation systems GPS, Glonass, EGNOS, Galileo, Beidou, etc., including system design tools and navigation equipment. Emphasis is placed on the engineering aspects, the GNSS system and subsystem evolution, design and technological demonstrator prototyping, and specifically on navigation system design and tools, novel navigation techniques and equipment design and prototyping, onboard receivers and formationflying RF metrology. Fields of activitiesresearch Positioning and navigation have become essential functions in everyday life for professional and massmarket usage. This leads to a continuous extension of the user base phones, wearables, watches, etc., operating environments cities, indoor, etc. and improvement of performance accuracy, resilience, power consumption, etc. The field in which the selected research fellow will focus their activities is signal processing and navigation algorithms to enhance performance and resilience of PNT PositionNavigationTiming solutions in challenging environments multipath and nonlineofsight impairments, interference, etc.. There are two main activities which could be foreseen 1 The first activity will focus on the development of algorithms, in particular navigation algorithms, to enhance the accuracy of GNSS and hybrid GNSS solutions. The main focus shall be on terrestrial users and technologies. 2 The second activity aims at developing solutions combining the latest GNSS with the latest alternative and backup PNT technologies 5G landscape, signal of opportunity incoming from LEO satcoms, etc. to achieve seamless ubiquitous accurate positioning. For the aforementioned activities, development is meant in the broadest sense, covering the design, implementation and testing of solutions e.g. testing through laboratory and field campaigns. Technical competencies Ability to conduct research autonomously Breadth of exposure coming from past andor current researchactivities Researchpublication 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 CrossCultural Sensitivity Education Applicants should have recently completed, or be close to completion of a PhD in a relevant engineering domain. Preference will be given to applications submitted by candidates within five years of receiving their PhD. Additional requirements Previous experience in radio navigation signal processing and sensor fusion algorithm design would be an asset, as would knowledge of position estimation algorithms, signal processing and radio communications. The Research Fellow must be able to work in a team with other international investigators in a spirit of positive cooperation and, at the same time, be capable of working autonomously in hisher area of research. At the end of the fellowship, the Research Fellow will be required to summarize the work completed so that it can be included in papers to be submitted to relevant specialised conferencesjournals. 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 23 November 2018. In addition to your CV and your motivation letter, please add your proposal of no more than 5 pages outlining your proposed research in the additional documents field of the application information section. Candidates are asked to arrange for 3 reference letters, to be sent by the referees themselves, before the closing date to temp.htresa.int. Please ensure your name is mentioned in the subject of the email. If you require support with your application due to a disability, please email contact.human.resourcesesa.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 underrepresented Member States. In accordance with the European Space Agencys security procedures and as part of the selection process, successful candidates will be required to undergo basic screening before appointment Apply HERE

Tags: research navigation radio internal

 

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