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Fri, 29 May 2020 03:34:18 +0000
Electro Optic Systems Holdings Ltd. of Australia completed its acquisition May 28 of Silicon Valley startup Audacy and announced plans to spend approximately $1.2 billion Australian dollars ($800 million) to create the EOSLink satellite communications constellation. SpaceNews.com
Thu, 28 May 2020 23:57:40 +0000
The headquarters of former Air Force Space Command in Colorado Springs will be phased out. The Space Force HQ is being stood up in the Pentagon. SpaceNews.com
Thu, 28 May 2020 23:44:25 +0000
Viasat says it is open to building a constellation of nearly 300 satellites in low Earth orbit if it can qualify for some of the $20.4 billion in broadband subsidies the U.S. Federal Communications Commission intends to dole out under the Rural Digital Opportunities Fund.  SpaceNews.com
Thu, 28 May 2020 22:07:08 +0000
Rocket Lab will resume launches of its Electron small launch vehicle in June as the effects of the coronavirus pandemic ease at its New Zealand launch site. SpaceNews.com
Thu, 28 May 2020 20:42:31 +0000
Baldridge said that in addition to the 300 layoffs, Viasat furloughed some employees, froze salaries for a large number of workers, and brought hiring to a virtual standstill in an effort to curb costs.  SpaceNews.com
Thu, 28 May 2020 10:34:03 +0000
China is preparing to carry out 11 missions in two years to construct a space station and will soon select a new batch of astronauts for the project. SpaceNews.com
Wed, 27 May 2020 22:11:53 +0000
Gen. Murray: “It’s about figuring out what capabilities they can provide, and what vulnerabilities do they have?" SpaceNews.com
Wed, 27 May 2020 20:55:47 +0000
The first human orbital spaceflight from the United States in nearly nine years came within 17 minutes of launch May 27 before weather conditions postponed the launch. SpaceNews.com
Wed, 27 May 2020 20:40:59 +0000
Col. Eric Felt, director of the AFRL Space Vehicles Directorate, talks with SpaceNews Staff Writer Sandra Erwin and Editor-in-Chief Brian Berger about the R&D investments the directorate is making to help the U.S. military maintain a technological advantage in the space domain. SpaceNews.com
Wed, 27 May 2020 19:43:37 +0000
The FCC pushed back on new criticism from the Senate and House Armed Services Committees. SpaceNews.com
Wed, 27 May 2020 19:35:14 +0000
OneWeb told the FCC May 26 that it wants to increase its constellation size to 48,000 satellites despite having filed for bankruptcy over an inability to fund a smaller broadband megaconstellation. SpaceNews.com
Wed, 27 May 2020 16:51:17 +0000
The astronauts who will fly the first Crew Dragon mission say they understand and accept the risks of a new spacecraft, which they believe can’t be boiled down to a single number. SpaceNews.com
Wed, 27 May 2020 16:32:58 +0000
SpaceX has decided to add sunshades to future Starlink satellites to reduce their impact on astronomy, having opted for constellation-wide implementation of the reflective hardware.  SpaceNews.com
Wed, 27 May 2020 15:09:32 +0000
NASA intends to gain access to Earth observation data gathered by Airbus Defense and Space satellites through the Commercial Smallsat Data Acquisition Program. SpaceNews.com
Wed, 27 May 2020 03:09:46 +0000
As NASA and SpaceX complete final preparations for the first crewed flight of the Crew Dragon spacecraft, the agency is already looking ahead to the spacecraft’s next mission. SpaceNews.com
Wed, 27 May 2020 02:00:56 +0000
Yuri Prokhorov, RSCC’s chief executive, said the company wants to have the satellites in orbit in 2024 to provide Ku-band coverage to Russia’s Far North. SpaceNews.com
Tue, 26 May 2020 23:54:25 +0000
On the eve of the first crewed orbital flight from the United States in nearly nine years, both the current NASA administrator and his predecessor agreed that credit for the ultimate success of the commercial crew program should be shared. SpaceNews.com
Tue, 26 May 2020 23:02:21 +0000
Roccor has completed radio frequency testing of the antenna scheduled for launch later this year on the satellite housing Viasat’s Link 16 military communications terminal. SpaceNews.com
Tue, 26 May 2020 14:15:17 +0000
The U.S. Army will experiment using Starlink broadband to move data across military networks. SpaceNews.com
Tue, 26 May 2020 01:59:39 +0000
NASA and SpaceX officials said after a final pre-launch review they had no major issues about the upcoming Demo-2 commercial crew launch beyond one over which they have no control: the weather. SpaceNews.com
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  • CV: Astrodynamics researcher

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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:20-08-2012
     Last Modified:30-06-2019 (07:00)
    Job information
     Current job:Astrodynamics researcher
     Employment Term:Permanent
     Job location:Anywhere
     Date available:immediately
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, , , Launch Systems, Consulting/Engineering Services
     KeywordsSpace Flight Dynamics, Fortran77, Space Debris, Scilab, C++, Matlab, Asteroids, CELESTLAB, Interplanetary missions, Trajectory analysis
    CV

    Date of Birth: October 25th, 1986

    Citizenship: Indian

     

    EDUCATION:

    Ph.D in Aerospace Engineering, Karunya Institute of Technology and Sciences (Deemed to be university), Tamil Nadu, India.

    December 2014 – July 2019

     

    Mastère spécialisé in Space Systems Engineering (TAS-ASTRO), l’Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), Toulouse, France.

    Graduated in September 2012

     

    Master of Science (M.S) in Aerospace Engineering, University of Southern California (USC), Los Angeles, CA, USA.

    Graduated in December 2010

     

    Bachelor of Engineering (B.E) in Computer Science and Engineering, PSG College of Technology, Anna University, Tamil Nadu, India.

    Graduated in May 2008

     

    EXPERIENCE:

    Astrodynamics Researcher (November 2018 – Present)

    AgniKul Cosmos Private Limited, Indian Institute of Technology Madras (IITM), India

     

    Visiting Researcher (April 2018 – September 2018)

    Institute for Computational Engineering and Sciences, University of Texas at Austin, USA

    Funded by Advanced Sciences and Technology Research in Astronautics (ASTRIA).

     

    Senior Research Fellow (August 2016 – August 2017)

    Karunya Institute of Technology and Sciences, India

    Optimal re-entry prediction of space debris using regularized formulation and genetic algorithm.

    Funded by Science and Engineering Research Board (SERB), Government of India.

     

    Visiting Research Student (June 2015 – July 2015)

    Asher Space Research Institute, Technion-Israel Institute of Technology, Israel

    Investigation of analytical methods for satellite orbit modeling.

    Funded by Technion through European Research Council FADER Project.

     

    Junior Research Fellow (August 2014 – July 2016)

    Karunya Institute of Technology and Sciences, India

    Developed regularized orbit propagation theories for debris re-entry prediction.

    Funded by SERB, Govt. of India.

     

    Stagiaire (Engineering Intern) (April 2012 – September 2012)

    Le Centre National d’Etudes Spatiales (CNES), France

    Developed interplanetary trajectory analysis tool in Scilab for CELESTLAB and analyzed a mission to asteroid Apophis.

     

    Grader (January 2010 – May 2010)

    University of Southern California, USA

    Assisted the professor in the undergraduate course (Astronautics and Space Environment – I) and graded assignments and tests.

     

    Student Worker (October 2008 – May 2010)

    Pertusati USC Bookstore, USA

     

    COMPUTER SKILLS:

    Software:  Scilab, Maxima, Mathematica, Matlab, AGI, Adobe Photoshop, MS Office;

    Programming:  Fortran, Python, Java, Orekit;

    Environments:  Windows, Ubuntu Linux, Mac OSx;

     

    PUBLICATIONS:

    Peer-reviewed journals

    Sellamuthu H., and Sharma R.K., Luni-solar perturbations using Kustaanheimo-Stiefel space, Advances in Space Research. (under review)

     

    Sellamuthu H., Sharma R.K., and Arumugam, S., Optimal re-entry time prediction of resident space objects from highly elliptical orbits, Advances in Space Research. (under review)

     

    Sharma R.K., Sellamuthu H., and Isravel H., Effect of oblateness on the locations and linear stability of collinear points in elliptic restricted three-body problem, Planetary and Space Science. (under review)

     

    Sellamuthu H., Arumugam S., and Sharma R.K., Sun gravity-assist to trans-lunar injection orbits, Lecture Notes in Mechanical Engineering. (accepted for publication)

     

    Sellamuthu H., and Sharma R.K., Hybrid orbit propagator for small spacecraft using Kustaanheimo-Stiefel elements, Journal of Spacecraft and Rockets, Vol. 55, No. 5, pp. 1282 – 1288, 2018. DOI: 10.2514/1.A34076

     

    Sellamuthu H., and Sharma R.K., Orbit theory with lunar perturbation in terms of Kustaanheimo-Stiefel regular elements, Journal of Guidance, Control, and Dynamics, Vol. 40, No. 5, pp. 1272 – 1277, 2017. DOI: 10.2514/1.G002342

     

    Conference proceedings

    Sellamuthu H., Arumugam S., and Sharma R.K., “Sun gravity-assist to trans-lunar injection orbits,” Proceedings of the 63rd Congress of the Indian Society for Theoretical and Applied Mechanics, December 20 – 23, 2018, Bangalore, India. Paper #004.

     

    Sellamuthu H., Jeevi A.A., and Sharma R.K., “Orbit predictions of high eccentricity satellite orbits with luni-solar effects using KS elements,” Proceedings of the 66th International Astronautical Congress, IAC, 7, pp. 5582 – 5589, October 12 – 16, 2015, Jerusalem, Israel, Paper # IAC-15,C1,4,11,x28734.

     

    Presentations and posters

    Sellamuthu H., Sharma R.K., Solomon, B.J., Ravichandran, S., and Shah Khadri, S.P.M., “Optimized re-entry time prediction of Molniya orbit objects,” Paper accepted for presentation at the 70th International Astronautical Congress, October 21 – October 25, 2019, Washington D.C., USA.

     

    Sellamuthu H., and Sharma R.K., “Optimal re-entry time prediction of resident space objects from highly elliptical orbits,” Paper presented at the 42nd COSPAR Scientific Assembly, July 14 – July 22, 2018, Pasadena, California, USA.

     

    Sellamuthu H., and Sharma R.K., “On-board orbit propagator using Kustaanheimo-Stiefel elements for Mars micro orbiters,” Poster presented at the 3rd International Workshop on Instrumentation for Planetary Missions, October 24 – 27, 2016, Pasadena, CA, USA, Paper #4004.

     

    Sellamuthu H., and Sharma R.K., “Orbital theory in terms of KS elements with luni-solar perturbations,” Accepted for presentation at the 41st COSPAR Scientific Assembly, July 30 – August 7, 2016, Istanbul, Turkey. (Assembly cancelled due to force majeure in Turkey).

     

    Sellamuthu H., and Sharma R.K., “Development of software for satellite orbit prediction with luni-solar gravity perturbation in terms of KS elements,” Presented at the International Conference on Celestial Mechanics and Dynamical Astronomy, December 14 – 18, 2015, Hyderabad, India.

     

    Sellamuthu H., and Sharma R.K., “Analytical theory using KS elements for orbit prediction with solar gravitation perturbation,” Presented at the 59th Congress of the Indian Society for Theoretical and Applied Mechanics, December 16 – 20, 2014, Bangalore, India.

     

    Other journal publications

    Smibi M.J., Sellamuthu H., and Sharma R.K., An analytical theory with respect to the Earth’s zonal harmonic term J2 in terms of eccentric anomaly for short-term orbit predictions, Advances in Astrophysics Vol. 2, No. 2, pp. 141 – 150, 2017. DOI: 10.22606/adap.2017.22008

     

    Saji S.S., Sellamuthu H., and Sharma R.K., On J2 short-term orbit predictions in terms of KS elements, International Journal of Advanced Astronomy, Vol. 5, No. 1, pp. 7 – 11, 2017. DOI: 10.14419/ijaa.v5i1.7083

     

    LANGUAGES:

    Fluent in English, Native in Tamil, Beginner in French (CEFR A2)

     

    AWARDS AND GRANTS:

    COSPAR travel grant (2018, Pasadena, California, USA)

    Best poster award – Colloquium on Research Practices (2017, Karunya University, India)

    SERB Senior Research Fellowship (2016 – 2017, Karunya University, India)

    COSPAR travel grant (2016) – Assembly cancelled due to force majeure in Turkey

    Visiting Research Scholarship (2015, Technion – Israel Institute of Technology, Israel)

    SERB Junior Research Fellowship (2014 – 2016, Karunya University, India)

     

    PROFESSIONAL AFFILIATIONS:

    Associate member – Committee on Space Research (COSPAR)

    Student member – American Institute of Aeronautics and Astronautics (AIAA)

    Student member – American Astronautical Society (AAS)

     

    INVITED LECTURES:

    Panel Speaker, Risk & Reward: Stakeholder Perspectives of the Future of Private Space Exploration in India, Organized by Berkeley Law Society, Bengaluru, India, 2019

    Guest Speaker, International Science Summit 2019, IITM Research Park, Chennai, India

     

    SIGNIFICANT PROJECTS:

    Re-entry time prediction of space objects from high eccentricity orbits (SERB-DST funding)

    (August 2014 – July 2017)

    Research fellow at Karunya Institute of Technology and Sciences, Coimbatore, India

    Developed of analytical theories for orbit propagation using regularized formulation,

    Optimally predicted re-entry time of space debris using regularized orbit propagator along with genetic algorithm.

     

    Interplanetary Trajectory Analysis and Mission to Apophis

    (April 2012 – September 2012)

    Stagiaire (Engineering Intern) at CNES, Toulouse, France

    Performed analysis on interplanetary trajectories for a mission to Apophis asteroid,

    Studied the small body orbital dynamics,

    Used and developed the low-level space flight dynamics library CELESTLAB and OREkit.

     

    Peep-hole ground segment

    (December 2011 – March 2012)

    Student Engineer of Integrated Team Project at ISAE, Toulouse, France

    Designed a state of the art system for a ground station network for a constellation of 8 Earth Observation satellites called ‘Peep-Hole’ which provide real time images,

    The design of the ground station network includes all the segment of the usage of the Peep-Hole constellation including the technical, market and legal aspects.

     

    REFERENCES:

    Doctoral Advisor

     

    Dr. Ram Krishan Sharma

    Professor, Aerospace Engineering

    Karunya Institute of Technology and Sciences,

    Coimbatore – 641114 Tamil Nadu, India

    ✉ ramkrishansharma(at)gmail.com

    Doctoral Committee Member

     

    Dr. T. V. Christy

    Professor, Mechanical Engineering

    Karunya Institute of Technology and Sciences,

    Coimbatore – 641114 Tamil Nadu, India

    ✉ christy(at)karunya.edu

     


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