Latest Space News
Fri, 27 May 2022 14:44:05 +0000
British small satellite startup Open Cosmos said May 27 it has secured European Space Agency funding to develop plans for a space weather monitoring constellation. The post UK’s Open Cosmos gets ESA funding for space weather constellation appeared first on SpaceNews.
Fri, 27 May 2022 13:48:10 +0000
The Philippines has approved plans that will see it become the first country in Southeast Asia to access SpaceX’s Starlink broadband services.  The post The Philippines gives green light to Starlink appeared first on SpaceNews.
Fri, 27 May 2022 13:28:44 +0000
Astroscale has secured European Space Agency funding for a 2024 demo mission to remove what will likely be a OneWeb satellite. The post Astroscale gets funds for 2024 debris-removal mission appeared first on SpaceNews.
Fri, 27 May 2022 12:41:17 +0000
China is looking to land spacecraft near permanently shadowed regions near the south pole of the moon to investigate the potential presence of resources trapped in craters. The post China targets permanently shadowed regions at lunar south pole appeared first on SpaceNews.
Fri, 27 May 2022 03:03:20 +0000
SpaceX will replace the heat shield on the next Crew Dragon spacecraft flying to the International Space Station after it failed inspections, but NASA says there is no risk of a similar problem for the spacecraft currently at the station. The post SpaceX replacing heat shield on upcoming Crew Dragon mission after failed test appeared first on SpaceNews.
Thu, 26 May 2022 22:08:57 +0000
General Dynamics Mission Systems won a $324.5 million contract to operate the ground systems and manage network operations of the Space Development Agency’s low Earth orbit constellation. The post General Dynamics wins ground systems contract for Space Development Agency’s megaconstellation appeared first on SpaceNews.
Thu, 26 May 2022 20:47:31 +0000
The Space Systems Command announced May 26 the official rollout of a new process to assess the cybersecurity of commercial satellite operators that do business with the Defense Department.  The post Space Force rolls out cybersecurity standards for commercial providers of satellite services appeared first on SpaceNews.
Thu, 26 May 2022 18:52:20 +0000
Broader economic issues as well as the performance of some space companies could slow the growth of the industry in the next few years, executives warn. The post Economy could dampen growth of space industry appeared first on SpaceNews.
Thu, 26 May 2022 16:43:33 +0000
Spacecraft developers are additively manufacturing engine nozzles and other complex spacecraft components. The post Additive manufacturing has progressed far beyond brackets appeared first on SpaceNews.
Thu, 26 May 2022 11:52:05 +0000
SpaceX launched several dozen payloads on its fifth dedicated rideshare mission May 25, illustrating the continued demand for such missions even as dedicated small launch vehicles emerge. The post SpaceX launches Transporter-5 dedicated smallsat rideshare mission appeared first on SpaceNews.
Thu, 26 May 2022 00:31:38 +0000
A panel of space logistics experts underscored the importance of open standards to encourage the growth of the market. The post Space logistics experts broadly endorse standards appeared first on SpaceNews.
Wed, 25 May 2022 23:18:59 +0000
Boeing’s CST-100 Starliner safely landed in New Mexico May 25, concluding a six-day uncrewed test flight to the International Space Station. The post Starliner concludes OFT-2 test flight with landing in New Mexico appeared first on SpaceNews.
Wed, 25 May 2022 21:28:28 +0000
Gogo is planning to use OneWeb satellites in a partnership that could see it take on Starlink in an emerging business aviation market for low Earth orbit services.  The post Gogo’s OneWeb partnership could face Starlink in business aviation market appeared first on SpaceNews.
Wed, 25 May 2022 21:13:16 +0000
Virgin Orbit expects to perform its first launch from England in late August, pending award of a British launch license, a company executive said May 25. The post Virgin Orbit expects first U.K. launch in August appeared first on SpaceNews.
Wed, 25 May 2022 17:02:37 +0000
The National Reconnaissance Office announced May 25 it awarded BlackSky, Maxar Technologies and Planet Labs 10-year contracts to provide satellite imagery for U.S. intelligence, defense and federal civil agencies. The post BlackSky, Maxar, Planet win 10-year NRO contracts for satellite imagery appeared first on SpaceNews.
Wed, 25 May 2022 16:17:17 +0000
As governments make slow progress on space traffic management systems, companies may be able work together more quickly to develop processes to support space sustainability. The post Industry looks to decentralized approaches to space sustainability appeared first on SpaceNews.
Wed, 25 May 2022 11:26:15 +0000
Launcher won a $1.7 million contract from the U.S. Space Force that will assist the company’s development of a high-performance rocket engine for its small launch vehicle. The post Launcher wins Space Force contract to support engine development appeared first on SpaceNews.
Wed, 25 May 2022 09:18:09 +0000
Supply chain disruptions continue to pose a challenge for the space industry, but some see those disruptions as an opportunity for new approaches and innovation. The post Supply chain challenges also present opportunities for the space industry appeared first on SpaceNews.
Wed, 25 May 2022 04:32:13 +0000
At the Space Tech Expo May 24, space industry executives and startup founders shared advice for fledgling startups. The post Experts offer advice for space sector entrepreneurs appeared first on SpaceNews.
Wed, 25 May 2022 03:44:21 +0000
A forest fire is a massive wall of heat and flame.  Driven by high winds, it can leap across roads, spin into columns of fire, turn homes to ash. The post Fighting Fires via Satellite appeared first on SpaceNews.
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  • CV: Post doctoral fellow - Power electronics

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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
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    Candidate Profile
     Date Submitted:23-03-2015
     Last Modified:23-03-2015 (04:24)
    Job information
     Current job:Post doctoral fellow - Power electronics
     Employment Term:Temp/Contract
     Job location:Anywhere
     Date available:within 3months
     Industry:
     KeywordsPower electronics, SMPS, wide band gap devices, power managment, converter design,
    CV

    EDUCATION

                    2011-2014        Ph.D in power electronic: G2Elab/Thales, Grenoble, France

    Thesis title: High frequency DC-DC converter using GaN devices.

     

                    2007-2010        ENGINEERING SCHOOL: ENSE3, GRENOBLE, FRANCE

    Electrical engineering degree with a specialization in power electronic.

     

    EXPERIENCES

                    2014-2015        Postdoctoral fellow, G2Elab, France

    ·      Design of 600V switching mode power supply (SMPS) using GaN devices, for motor control.

    ·      Computation of stray parasitic elements to improve dynamic performances.

    ·      Study of different gate driver topologies to work at high temperature.

    ·      EMC optimization

    ·      PCB design

    ·      Tests and measures

    ·      Team leader in the Little Box Challenge (LBC).  High power density, single phase 2kVA inverter.

    ·      Optimization of every aspect of the inverter: Control, gate driver, layout, EMC, filters, power topology, packaging, thermal aspects…

    ·      Multi-level topology

    ·      Active filter

    ·      GaN FET

     

                    2011-2014        Ph.D student, G2Elab/Thales, France

    ·      Realization of a 100W 1.4MHz insulated DC/DC converter achieving 92% efficiency.

    ·      Analysis of insulated DC/DC converter topology like DAB.

    ·      Use of MOSFETs and wide band gap devices for high frequencies (GaN devices).

    ·      PCB design using Altium. Reduction of parasitic elements to prevent EMC issues. SMD and through hole devices on PCB or IMS substrate.

    ·      Hardware construction. Electronic hardware design.

    ·      Parasitic elements computation using InCa3D.  Design of inductances using PCB tracks.

    ·      Design of different insulated gate driver topologies. Realization of an IC to improve commutation of wide band gap devices.

    ·      Simulation of power electronic circuits (SMPS) using SPICE-like tools.

    ·      Loss computation in switches and magnetic elements using Mathcad.

    ·      Design of magnetic components.

    ·      Analogue and digital controllers.

    ·      Measures, test and debug of switch mode power supply.

     

    2010                    research internship, CEA-INES, Bourget du lac, France (6months)

    ·         Study of the impact of soiling on photovoltaic panel efficiency.

    ·         Spectral responsivity analysis.

    ·         Spectrometry.

     

    2009                    Internship, Expert solaire, Poisat, France (3months)

    ·         Design of solar PV array systems on roofs using PVsyst.

    ·         Evaluation of shadings.

    ·         3D modelling of the building and its PV system.

     

    PUBLICATIONS

    insulated gate driver for eGaN fets

    Delaine, Johan ; Jeannin, Pierre-Olivier ; Frey, David ; Guepratte, Kevin

    Energy Conversion Congress and Exposition (ECCE), 2014

     

    Improvement of GaN transistors working conditions to increase efficiency Of A 100W DC-DC converter

    Delaine, Johan ; Jeannin, Pierre-Olivier ; Frey, David ; Guepratte, Kevin

    Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Seventh Annual IEEE

     

    High frequency DC-DC converter using GaN device

    Delaine, Johan ; Jeannin, Pierre-Olivier ; Frey, David ; Guepratte, Kevin

    Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE

     

    LANGUAGES

    French: native language.

    English: Fluent.

     

    HOBBIES

    Traveling, hand ball (captain and coach), riding motorcycle, growing bonsai and playing guitar and drums.


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