Latest Space News
Tue, 12 Nov 2019 17:12:03 +0000
Megaconstellation startup OneWeb and its largest investor Softbank asked the New York Supreme Court to dismiss a lawsuit from Intelsat, arguing that Intelsat failed to finalize rights it claimed it had to resell OneWeb satellite capacity.  SpaceNews.com
Tue, 12 Nov 2019 13:40:20 +0000
The senior secured loan will finance BlackSky’s infrastructure and product development. SpaceNews.com
Tue, 12 Nov 2019 00:05:39 +0000
A NASA space telescope recently completed a major review and is making good progress, project officials say, despite uncertainty about its funding. SpaceNews.com
Mon, 11 Nov 2019 22:34:00 +0000
Readers voted in October to select the individuals, organizations and accomplishments most deserving of recognition at the 2019 SpaceNews Awards for Excellence and Innovation. Here is the complete list of the Readers' Choice Award winners for each category. SpaceNews.com
Mon, 11 Nov 2019 16:33:48 +0000
SpaceX completed its second launch of 60 Starlink satellites Nov. 11, making its own system the largest commercial telecommunications satellite constellation in orbit. SpaceNews.com
Sun, 10 Nov 2019 15:34:42 +0000
The Russian company that markets launch vehicles commercially says it doesn’t expect the new Soyuz-5 medium-lift rocket to be available until the mid-2020s, despite leveraging existing designs and facilities. SpaceNews.com
Fri, 08 Nov 2019 22:19:39 +0000
Telesat Canada will likely choose the winner of a now three-way race to build its low Earth orbit broadband constellation in the first few months of 2020 instead of this year, CEO Dan Goldberg said Nov. 5.  SpaceNews.com
Fri, 08 Nov 2019 18:43:04 +0000
The Infrastructure Asset Pre-Assessment (IA-Pre) program will be run by the Air Force Space Command’s commercial satellite communications office. SpaceNews.com
Fri, 08 Nov 2019 17:48:35 +0000
OneWeb has delayed the beginning of its regular launch campaign by a month to allow more testing of its small broadband satellites.  SpaceNews.com
Fri, 08 Nov 2019 12:15:06 +0000
A NASA astronaut flying to the International Space Station next spring could be the only American on the station for an extended period because of uncertainty in the status of commercial crew vehicles. SpaceNews.com
Thu, 07 Nov 2019 23:05:29 +0000
Avio CEO Giulio Ranzo said during a Nov. 7 earnings call, said Vega is on track for a return to flight by March, though what payload will launch on the mission is still to be determined.  SpaceNews.com
Thu, 07 Nov 2019 21:54:50 +0000
Boeing said Nov. 7 that a misplaced pin prevented a parachute from deploying during a pad abort test of its CST-100 Starliner vehicle three days earlier, the only flaw in a key test of that commercial crew vehicle. SpaceNews.com
Thu, 07 Nov 2019 21:00:44 +0000
Fiber Optic Manufacturing in Space (FOMS) Inc. presented the results Nov. 7 of its successful campaign to produce optical fiber on the International Space Station. SpaceNews.com
Thu, 07 Nov 2019 20:57:54 +0000
DoD wants to increase awareness of the threats the nation faces in space but classification is a problem. SpaceNews.com
Thu, 07 Nov 2019 14:00:04 +0000
Ursa Space Systems, a geospatial analytics company that specializes in the application of synthetic aperture radar (SAR) data, raised $15 million in a Series B funding round led by Razor’s Edge Ventures. SpaceNews.com
Thu, 07 Nov 2019 11:59:07 +0000
The White House warned Congress in a recent letter that without funding increases for its exploration programs, NASA won’t be able to achieve the goal of landing humans on the moon in 2024. SpaceNews.com
Thu, 07 Nov 2019 06:46:23 +0000
Over two days, the U.S. Air Force awarded $22.5 million in Small Business Innovation Research (SBIR) funding to 30 companies attending the first Air Force Space Pitch Day in San Francisco. SpaceNews.com
Wed, 06 Nov 2019 23:12:06 +0000
DIU received 25 proposals for the Dismounted Assured PNT System SpaceNews.com
Wed, 06 Nov 2019 21:21:34 +0000
Iceye, the Finnish radar satellite constellation operator, announced an agreement Nov. 6 with RS Metric, a satellite imagery and geospatial analytics company, to provide data on iron ore inventories to the commodities market. SpaceNews.com
Wed, 06 Nov 2019 21:15:16 +0000
A bipartisan group of senators introduced a new NASA authorization bill Nov. 6 that would extend the life of the International Space Station and direct NASA to have an upgraded version of the Space Launch System ready by 2024. SpaceNews.com
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  • CV: Aerospace Engineer

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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
     Mobile:<withheld>
    Candidate Profile
     Date Submitted:24-04-2014
     Last Modified:25-04-2014 (08:49)
    Job information
     Current job:Aerospace Engineer
     Employment Term:Permanent
     Job location:Own country
     Date available:immediately
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, , , Launch Systems, Business Services
     KeywordsRadiation effects and reliability of microelectronics
    CV


    EXPERIENCE

    Aerospace Engineer − Apr 2011 to present

    Electrical Engineering and Flight Data Systems Division, code 561

    NASA Goddard Space Flight Center, Greenbelt, MD 20771

     

    Sr. Systems Engineer − Dec 2007 to Apr 2011

    MEI Technologies Inc., c.o. NASA Goddard Space Flight Center, Greenbelt, MD 20771

     

    ·         Radiation lead for the Joint Polar Satellite Systems program

    • Accomplishments

    § Determined origins of on-orbit anomalies that lead to the implementation of mitigations for JPSS-1 and subsequent JPSS spacecrafts

    § Discovered and replaced several parts with weak radiation tolerance, leading to improvement of system reliability and mission assurance; one case lead to center-wide alert for the usage of the part in NASA projects

    • Guidance of overall mission radiation requirements

    § Provide expertise of radiation effects on electronic components, including total-ionizing dose, single-event effect, and displacement damage effect

    § Derived mission ionizing radiation environment specifications using simulation tools (SPENVIS, NOVICE, etc.)

    § Oversight of contractors and sub-contractors radiation assurance programs (four prime contractors and over 20 different sub-contractors)

    • Voting member of the parts control board
    • Key reviewer of cost proposals, waivers, and contract data requirement list submissions
    • Lead radiation test efforts

    §  Implement test guidelines and requirements

    § Manage team of test engineers and technicians for testing using heavy-ions, protons, pulsed-laser, and 60Co gamma rays

    • Perform radiation analysis

    § Calculate upset error rate using simulation tools such as Cosmic Ray Effects on Micro-Electronics(CRÈME-96)

    §  Evaluate Worst Case Analysis

     

    ·         Principal investigator of radiation reliability of non-volatile memories

    • Accomplishments

    § Coauthor of NASA radiation test guideline of advanced non-volatile memories

    § Published first ever results of single-event effect performance of a production-level resistive memory

    • Collaborate with industry vendors (Samsung, Micron, Panasonic, Adesto, etc.), and government agencies (NASA-JPL, Navy/Crane, Naval Research Laboratory) to investigate suitability of state-of-the-art memories for space application

     

    ·         Principal investigator of enhanced low dose rate sensitivity (ELDRS) project

    • Accomplishments

    § Only project to comprehensively evaluate the ELDRS response of bipolar transistors and integrated circuit devices

    § Findings impacted the radiation assurance program of the community: ELDRS in bipolar transistors are now considered for part control programs

    • Collaborate with industry vendors (SEMICOA, Texas Instruments, National Semiconductor, Linear Technology, and ST Microelectronics) to assess ELDRS at ultra-low dose rates across commercial-, military-, and space-level parts
    • Manage testing of 400+ parts

     

    ·         Principal investigator of radiation performance of linear regulators and point-of-load regulators

    • Accomplishments

    §  Published first results of temperature effects on single-event transients in linear devices

    §  Research findings and test results key to qualification of radiation-hardened products


                   

    AWARDS

    ·         NASA performance award, 2012

    ·         Outstanding conference paper award coauthor, “Mechanisms and Temperature Dependence of Single Event Latchup Observed in a CMOS Readout Integrated Circuit from 16 – 300 K,”2010 Nuclear Space Radiation Effects Conference (NSREC), Quebec City, Quebec, Canada

    ·         Outstanding data workshop paper award coauthor, “Single Event Effects Compendium of Candidate Spacecraft Electronics for NASA,” 2009, 2010, and 2011 NSREC


    EDUCATION

    ·         Master of Science in Electrical EngineeringAug 2005 to Dec 2007

    Vanderbilt University, Nashville TN 37235

    Thesis title – “Total Dose Irradiation Effects on Silicon and Germanium MOS Capacitors with Alternative Gate Dielectrics” (Advisor: Ronald Schrimpf)

     

    ·         Bachelor of Engineering in Electrical Engineering and MathematicsAug 2001 to May 2005

    Vanderbilt University, Nashville TN 37235


    EXPERTISE

    ·         Hardware:

    Keithley 4200 Parametric Analyzer, Agilent 4156 Parametric Analyzer, TRIAD TCII-1200IC and TCII-1333ST memory testers (DDR2/DDR3 and Flash IC chips and modules), 10 KeV ARACOR x-ray irradiator, KNS 4524AD digital wire bonder, Tektronics digital oscilloscope (various models)

    §  Software/simulation tools:

    CRÈME), Tanner S-edit, L-edit and T-spice (VLSI layout, schematic, and circuit simulation tools), TCAD (semiconductor device simulation tool), C++, LabVIEW


    PUBLICATIONS

     

    Journals and Conference Proceedings

    §   D. Chen et al., “Evaluation of enhanced low dose rate sensitivity in discrete bipolar junction transistors,” 2012 Radiation Effects Data Workshop proceedings, pp. 1 – 7.

    §   D. Chen et al., “Enhanced low dose rate sensitivity at ultra-low dose rates,” IEEE Trans. Nucl. Sci., vol. 58, no. 6, part 1, pp. 2983 - 2990, Dec. 2011.

    §   T. Oldham et al., “Effect of Radiation Exposure on the Retention of Commercial NAND Flash Memory,” IEEE Trans. Nucl. Sci., vol. 58, no. 6, part 1, pp. 2904 - 2910, Dec. 2011.

    §   D. Chen et al., “The effects of ELDRS at ultra-low dose rates,” 2010 Radiation Effects Data Workshop proceedings.

    §   D. Chen et al., “Radiation performance of commercial SiGe HBT BiCMOS high speed operational amplifiers,” 2010 Radiation Effects Data Workshop proceedings.

    §   C. Marshal et al., “Mechanisms and Temperature Dependence of Single Event Latchup Observed in a CMOS Readout Integrated Circuit from 16 – 300 K,” IEEE Trans. on Nucl. Sci., vol. 57, no. 6, pp. 3078 – 3086, Dec. 2010.

    §   D. Chen et al., “The effects of elevated temperature on pulsed-laser-induced single event transients in analog devices,” IEEE Trans. on Nucl. Sci., vol. 56, no. 6, pp. 3138 – 3144, Dec. 2009.

    §   M. O’Bryan et al., “Recent Single Event Effects Compendium of Candidate Electronics for NASA Space Systems,” Radiation Effects Data Workshop proceedings, 2009, 2010, 2011, 2012, and 2013.

    §   D. Cochran et al., “Recent Total Ionizing Dose and Displacement Damage Compendium of Candidate Electronics for NASA Space Systems,”Radiation Effects Data Workshop proceedings, 2009, 2010, 2011, 2012, and 2013.

    §   D. Chen et al., “Total dose and bias temperature stress effects for HfSiON on Si MOS capacitors,” IEEE Tran. On Nucl Sci., vol. 54, no. 6, pp. 1931 – 1937, Dec. 2007.

    §   D. Chen et al., “Total dose response of Ge MOS capacitors with HfO2/Dy2O3 gate stacks,” IEEE Trans. on Nucl. Sci., vol. 54, no. 4, pp. 971 – 974, Aug. 2007.

     

    Presentations

    §   “Single-event effect performance of a commercial ReRAM,” to be presented at the Single-Event Effect Symposium and Military and Aerospace Programmable Logic Devices (MAPLD) Workshop, La Jolla, CA 2014.

    §   “Functional interrupts and destructive failures from single-event testing of point-of-load devices,” presented at the Nuclear and Space Radiation Effects Conference, San Francisco, CA, July 2013.

    §   “Radiation qualification of flash memories,” presented at the NASA Electronics Technology Workshop, June 11-12, 2013.

    §   “Point-of-load devices for space,” presented at the NASA Electronics Technology Workshop, June 13, 2013.

    §   “Enhanced low dose rate sensitivity at ultra-low dose rates,” presented at the Nuclear and Space Radiation Effects Conference, Las Vegas, NV, July 2011.

    §   “The effects of elevated temperature on pulsed-laser-induced single event transients in analog devices,” presented at the Nuclear and Space Radiation Effects Conference, Quebec City, Quebec, July 2009.

    §   “Total dose and bias temperature stress effects for HfSiON on Si MOS capacitors,” presented at the Nuclear and Space Radiation Effects Conference, Honolulu, HI, July 2007.


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