Latest Space News
Mon, 15 Oct 2018 23:40:09 +0000
45th Space Wing Commander Brig. Gen. Schiess: 'Gen. Raymond is pushing us to look at ways to be more responsive.' SpaceNews.com
Mon, 15 Oct 2018 23:06:02 +0000
Paul Allen, the billionaire co-founder of Microsoft who backed the winning entry in a suborbital spaceflight competition and later funded development of a massive air-launch system, passed away Oct. 15. SpaceNews.com
Mon, 15 Oct 2018 21:50:15 +0000
The status of proposals to create a separate branch of the U.S. military devoted to space will be the subject of the next meeting of the National Space Council on Oct. 23. SpaceNews.com
Mon, 15 Oct 2018 21:37:00 +0000
Canadian satellite startup Kepler Communications raised $16 million from investors, securing funding to build and launch its first-generation constellation of up to 15 satellites, the company announced today. SpaceNews.com
Mon, 15 Oct 2018 19:03:08 +0000
Eric Béranger, former chief executive of satellite constellation venture OneWeb, has left the company entirely, OneWeb confirmed Oct. 15. SpaceNews.com
Mon, 15 Oct 2018 16:31:23 +0000
Harris Corp. and L3 Technologies expect their $34 billion merger, announced Sunday, will create the sixth largest defense contractor in the United States while saving $500 million in corporate costs by three years of closing. SpaceNews.com
Mon, 15 Oct 2018 11:06:30 +0000
NASA Administrator Jim Bridenstine said he believes launches of crewed Soyuz spacecraft will resume “on schedule” after last week’s launch failure, avoiding the possibility of leaving the International Space Station without a crew. SpaceNews.com
Mon, 15 Oct 2018 11:00:58 +0000
Phase Four, an El Segundo, California startup, is expanding its leadership team as part of a campaign to direct its advanced electric propulsion system toward the growing satellite constellation market. SpaceNews.com
Sat, 13 Oct 2018 20:34:53 +0000
With the International Space Station likely to have only a three-person crew for an extended period, researchers expect there will be less time devoted to research. SpaceNews.com
Sat, 13 Oct 2018 17:30:34 +0000
The world’s people buy more than 78 million cars every year. They shop for horsepower and acceleration, leg room and cargo space, and how many miles it can go on a tank of fuel or on a single charge. And every year, more of them want to know just how smart their car is. The […] SpaceNews.com
Sat, 13 Oct 2018 16:35:04 +0000
Virgin Galactic’s chief executive says the company is approaching the “next phase” of the flight test program for the company’s SpaceShipTwo suborbital vehicle as the company’s founder predicts the company reaching space in “weeks.” SpaceNews.com
Sat, 13 Oct 2018 00:56:05 +0000
As one group of engineers continues to diagnose a gyro problem that has sidelined the Hubble Space Telescope, another is dealing with a problem that has put operations of another large space observatory on hold. SpaceNews.com
Fri, 12 Oct 2018 22:34:35 +0000
Luck is not a plan. Yet up to now Congressional appropriators and senior NASA officials are mostly relying on luck to keep us safe from catastrophic fatalities resulting from the surprise impact of an unseen asteroid. SpaceNews.com
Fri, 12 Oct 2018 18:03:30 +0000
The next-generation crewed spacecraft will be the payload for the first flight of the Long March 5B launch vehicle, a variant of the Long March 5 and designed for lofting large modules of the planned Chinese Space Station. SpaceNews.com
Fri, 12 Oct 2018 17:45:51 +0000
Defense officials have been sounding alarms about what they describe as a glaring national security vulnerability — a new class of ultrafast weapons being developed by China and Russia that would overpower U.S. missile defenses. SpaceNews.com
Fri, 12 Oct 2018 12:41:27 +0000
Roscosmos now says one of the Soyuz rocket’s four strap-on boosters failed to properly separate and nicked the core stage. SpaceNews.com
Fri, 12 Oct 2018 11:39:24 +0000
The Senate confirmed James Morhard to be NASA’s deputy administrator late Oct. 11. SpaceNews.com
Fri, 12 Oct 2018 11:22:45 +0000
Members of an independent NASA safety panel said they were worried that the Oct. 11 Soyuz launch failure could make safety concerns with the agency’s commercial crew program even worse. SpaceNews.com
Fri, 12 Oct 2018 02:25:11 +0000
Arianespace said Oct. 11 it’s too soon to say whether the Soyuz-ST rockets it uses to launch satellites from South America will be grounded following the failure of a Russian Soyuz-FG rocket carrying crew to the International Space Station. SpaceNews.com
Thu, 11 Oct 2018 23:20:38 +0000
Phase 2 of the Launch Service Agreement will be an open competition. All there winners have to compete - or they would have to return their development funds back to the government. SpaceX presumably would bid as well. SpaceNews.com
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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:21-09-2017
     Last Modified:26-09-2017 (03:52)
    Job information
     Current job:Scientist
     Employment Term:Permanent
     Job location:Anywhere
     Date available:within 2 months
     Industry:Satellite Manufacturers and Subcontractors, Launch Systems, Consulting/Engineering Services
     KeywordsSPACE PROGRAM MANAGEMENT, PAYLOAD TESTING, SPACE TECHNOLOGY ANALYST, DESIGN & MANUFACTURING EPC, SSPA, TWTA
    CV

    Date of Birth, Place              28/05/1974, Kollam, Kerala

    Present location                    Space Application Centre (SAC), ISRO, Ahmedabad, Gujarat       

    Designation                          Senior Scientist, Space Program /Project  Manager / Team Leader, Payload DC Power Systems & RF Power Amplifier Expert

    Research Experience/Area          20 Years. Space, Aerospace and Defense    Commercial / R&D /Critical Technology development Program  

    Design, Qualification and FM manufacturing of Satellite DC Power Systems / RF systems, EPC, SSPA, TWTA Design, Simulation, Development, Testing/Optimizations, Qualification and Flight Model Manufacturing carried out for Communication, Navigation and Remote Sensing Satellites, Deep Space Missions.

    Interesting fields               Space & Defense Program/Project Management, Payload Testing & Characterization, Satellite Power System Design/Simulations, Qualification, FM manufacturing, Advanced GaN based Hi-Rel DC/DC Conversion, ZVS/ZCS PWM & Resonant converters, Digital Control using FPGA/DSP,  Planar/Integrated Magnetics packaging, Circuit Simulation & Analysis, EMI/EMC Control, HMC/Power Hybrids, POL/LDO/MAGAMP designs, Envelope tracking, Flexible SSPA/GaN SSPA, Photovoltaic/Motor Controls, Linear/Nonlinear Robust Control Systems

    Software skills                  ORCAD/PSPICE, SABER, SIMPLIS/SIMETRIX, LTSPICE, PSIM, MATLAB/SIMULINK, VHDL, Libero

    Qualification                      Graduate in Engineering Technology, B-Tech [Electronics & Communication, TKMCE, Kollam, Kerala University, India]

    Language Skills                 English, Hindi, Gujarati, Tamil, Malayalam

    Membership                      

    1. Associate of COSPAR [International Committee On Space Research, USA]

    2. Member of VEDAS [Vacuum Electronic Device Application Society, India]     

    Publications                       More than 25 Publications/Articles in IEEE and National Journals, Transactions, Conferences, ISRO documents

    Appreciation                      Recipient of ISRO Team Excellence Award 2013 for developing 100W UHF SSPA / 60W C-TWTA

     

    Work Experience:

    1995-1997 Scientist CEERI, Pilani, Rajasthan

    Worked in CEERI, Pilani (A CSIR Lab, Govt. Of India) as a Scientist during 1995-1997 and associated with Design and Development of Space TWT for ISRO & Military TWT for DRDO.

     

    1997- 2017 Scientist SAC, ISRO, Ahmedabad

    In SAC/ISRO as Scientist/Engineer, working towards research, design, development and production of satellite equipments: EPC (satellite power supply), SSPA and TWTA (Satellite RF power amplifiers). During the last 20 years, I have worked in the field of EPCs, SSPAs & TWTAs. I have been responsible design and development of a number of State of the art EPCs ranging from very low power to high power & high voltage with advanced topologies. I have also been involved in the indigenous development of Space TWTAs, Space SSPAs.

     

    Professional Experience

    Space Program Management, Coordinating with Contractors/sub-contractors, Payload subsystems/systems delivery

    Design, Simulation, development, Testing, Qualification and Flight Model manufacturing of Space/Satellite systems

    -Electronic Power Conditioners (EPCs) developed for Low, Medium and High Power (1W to 650W DC) onboard Comm. and Navigation Satellite Payloads

    -High Voltage Electronic Power Conditioners (HV-EPCs) developed for 3KV to 6KV (150W-1500W DC) for TWTAs and Ion Thrusters

    -Indian Space Traveling Wave Tube Amplifiers (TWTAs) developed; Flight Model 60W C-Band TWTAs and Engineering Model 140W Ku-Band TWTAs

    Handled multi-disciplinary science and technologies (Power electronics, Digital, RF& Microwave, UHV/HV systems, Metal-Ceramic technologies, Material science & Particle physics)

    Co-coordination among “Govt.R&D – Academy – Industry” Network projects for various critical technologies development and technological capability building.

    Exposure to versatile work environments viz. Fundamental Research environment, Semi R&D + Production environment, Large scale Industrial Production environment; during execution of various collaborative projects.

    20 years of experience in procurement of Satellite systems (EPCs, Receivers, SSPAs, TWTAs) from global market. Interaction with renowned Space Equipment Manufacturers Boeing/L3Comm USA, TEASAT/Thales/Astrium EADS Germany/France, Alcatel Space Denmark, IR/Infineon, ASP, Germany, MDA, Canada

    Deputed to three renowned space equipment manufacturers (M/s BOEING USA, M/s THALES & M/s ASTRIUM Germany)

    Functioned as Member in several RFP Review Committee, PDR/CDR Committee for Electronic Warfare/Radar Systems of DRDO, Space Systems of ISRO.             

     

    Equipments Designed, Developed & Qualified for various Space programs of ISRO

    EPC for C, Ku Band LNA, U/D Converter, Receivers, Beacon       3W, 7.5W, 15W DC Power level                   26-42V Bus & 70V Bus designs

    EPC for UHF, L, S, C Band GaAs SSPAs              25W, 50W, 120W, 300W DC Power level                      42V Bus & 70V Bus designs

    EPC for UHF, L, S, C Band GaN SSPAs               125W, 170W, 350W, 650W DC Power level                   26-42V Bus & 70V Bus designs

    HVEPC and C-Band TWTAs                   HV EPC 3KV@150W DC &   60W C-Band TWTA                26-42V Bus & 70V Bus designs

    HV EPC and Ku-Band TWTAs                HV EPC 6KV@300W DC &   140W Ku-Band TWTA             26-42V Bus & 70V Bus designs

     

    Equipments Design, Development presently carrying out along with ISRO’s Commercial Program Managements

    New generation FPGA Controlled EPC            50-650W EPCs for 15W-250W Flexible GaN SSPAs              26-42V Bus & 70V Bus designs

    New generation eGaN Based EPCs             50-650W Switching GaN EPCs for 15W-250W GaN SSPAs             70V Bus designs

    HV-EPC for Ion Thruster                    1KV-2KV, 500W-1500W DC Power supply               70V Bus designs

     

    Conversion topologies worked on              Low voltage:  Flyback, Forward, Push-pull, RR/Active Clamp Forward, LLC, ZVT PSFB SR/CDR

                                                                      High Voltage: ZVS/ZCS Push-pull, ZVT PSFB, Series Resonant PSFB, LLC/LCC PSFB

     

        Control methods worked on                  Analog control:  Voltage Mode, Current Mode, Feed-Forward, Phase shifted PWM, PFM

    Digital Control:  Dynamic Bias, Envelope tracking Flexible DSP/FPGA/ASIC Controlled (DPWM, DPID, DPFM) EPCs for new generation Flexible payloads

     

        Packaging technologies worked on   Control HMCs, Power Hybrids, Planar Magnetics, Integrated Magnetics, FPGA, ASIC, LTCC


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