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Fri, 22 Feb 2019 22:23:55 +0000
NASA managers have given their approval for SpaceX to proceed with an uncrewed test flight of its Crew Dragon spacecraft on March 2. SpaceNews.com
Fri, 22 Feb 2019 17:22:42 +0000
SpaceShipTwo successfully flew to the edge of space for the second time Feb. 22, carrying three people for the first time as Virgin Galactic moved closer to beginning commercial operations of the suborbital spaceplane. SpaceNews.com
Fri, 22 Feb 2019 12:12:05 +0000
As NASA selects payloads it plans to fly on commercial lunar landers, companies developing those spacecraft are skeptical any landers will be ready to fly this year, as the agency desires. SpaceNews.com
Fri, 22 Feb 2019 03:18:10 +0000
A SpaceX Falcon 9 carrying an Indonesian communications satellite, an Israeli lunar lander and a U.S. Air Force smallsat launched Feb. 21 from Cape Canaveral, Florida. SpaceNews.com
Thu, 21 Feb 2019 23:49:24 +0000
Air Force Chief of Staff Gen. David Goldfein: "There are a thousand decisions that have to be made." SpaceNews.com
Thu, 21 Feb 2019 23:43:36 +0000
The Pentagon would ask Congress to approve “special temporary authorities” for the secretary of defense to transfer resources from other services to the Department of the Air Force and the Space Force. SpaceNews.com
Thu, 21 Feb 2019 21:34:19 +0000
EchoStar wishes it ordered its latest satellite, Jupiter-3, sooner than it did, but won’t seek to play catch up by buying another copy of the satellite in order to meet surging demand for broadband connectivity, executives said Feb. 21. SpaceNews.com
Thu, 21 Feb 2019 21:10:24 +0000
At the end of 2018, division chief Clare Grason and her entire satellite communications team at the Defense Information Systems Agency moved over to work in the same capacity under Gen. John (“Jay”) Raymond at the Air Force Space Command (AFSPC). SpaceNews.com
Thu, 21 Feb 2019 18:48:59 +0000
The challenge facing U.S. Strategic Command is figuring out how to develop a modern nuclear command, control and communications system (NC3) that passes muster. SpaceNews.com
Wed, 20 Feb 2019 22:17:54 +0000
As Blue Origin prepares to start flying people on its New Shepard suborbital vehicle, the company’s founder says the altitude the vehicle can reach will put it at an advantage over Virgin Galactic’s SpaceShipTwo. SpaceNews.com
Wed, 20 Feb 2019 21:53:23 +0000
The Indonesian communications satellite that is SpaceX’s primary payload for its second Falcon 9 launch this year overcame a change of manufacturers and the loss of a U.S. Ex-Im Bank loan to reach the launch pad. SpaceNews.com
Wed, 20 Feb 2019 17:21:12 +0000
Facebook and Viasat are collaborating first in Mexico, but are open to expanding globally, Viasat said. SpaceNews.com
Wed, 20 Feb 2019 15:26:15 +0000
Virgin Galactic scrubbed the Feb. 20 flight test for SpaceShipTwo, the air-launched suborbital spaceplane, due to high winds in Mojave, California. The flight test is now scheduled for Friday, Feb. 22. SpaceNews.com
Tue, 19 Feb 2019 23:39:24 +0000
The new chair of the House space subcommittee says she’s looking forward to working with the commercial space industry on a number of issues, including oversight of non-traditional space activities. SpaceNews.com
Tue, 19 Feb 2019 23:20:06 +0000
ULA and SpaceX will split six national security launches planned for 2021 to 2022, the Air Force announced Feb. 19. SpaceNews.com
Tue, 19 Feb 2019 22:18:37 +0000
SPD-4 gives the Pentagon the official go-ahead to send a proposal to the White House recommending the establishment of a separate military branch for space. SpaceNews.com
Tue, 19 Feb 2019 20:15:12 +0000
Virgin Galactic plans to conduct a fifth test flight Feb. 20 of its suborbital spaceplane SpaceShipTwo, VSS Unity. SpaceNews.com
Tue, 19 Feb 2019 20:14:26 +0000
A slow start for Eutelsat’s Konnect Africa broadband venture and losses in activities beyond the fleet operator’s core business contributed to a 4.4 percent decline in revenue during the last half of 2018. SpaceNews.com
Mon, 18 Feb 2019 22:11:51 +0000
The multiyear investment begins with 18-month contract worth few million pounds. SpaceNews.com
Mon, 18 Feb 2019 01:28:19 +0000
As LeoStella inaugurated the factory that will be used to produce a series of Earth imaging satellites, the joint venture of Thales Alenia Space and Spaceflight Industries continues to look for other customers. SpaceNews.com
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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
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    Candidate Profile
     Date Submitted:02-05-2013
     Last Modified:09-12-2016 (05:20)
    Job information
     Current job:Lead Avionics Engineer
     Employment Term:Either
     Job location:Europe only
     Date available:within 2 months
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, Consulting/Engineering Services, Space Tourism
     Keywordsattitude control, orbital control, flight dynamics, attitude determination, guidance and navigation, mission operations, matlab, simulink, GNC, AOCS
    CV

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    SUMMARY OF QUALIFICATIONS

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Accomplished guidance, navigation, and control engineer with 17 years of research and industrial experience designing, implementing, and testing algorithms, software, and simulation tools for space vehicles. Proven track record of leading the technical effort to implement GN&C subsystems from preliminary design through integration and test for new space companies and NASA. Significant projects include:

    * Designed and coded the on-board attitude determination and orbit navigation modules for the Cygnus advanced maneuvering spacecraft, which has flown several successful missions to the ISS.

    * Developed the GN&C subsystem architecture and 6-DOF simulation environment for the Bigelow B330 space habitat.

    * Designed the attitude determination and control system for NASA Goddard's Magnetospheric Multiscale Mission (MMS), a constellation launched in 2014 and currently operational.

    * Acted as one of the original architects of the attitude determination and control system design now used on Orbital Sciences' entire fleet of successful GEOStar commercial geosynchronous communications spacecraft.

    ~~~~~~~~~~~~~~~~~~~~~~

    AREAS OF EXPERTISE

    ~~~~~~~~~~~~~~~~~~~~~~

    • Spacecraft Attitude Control and Estimation        •  Modeling and 6-DOF Simulation

    • Nonlinear and Robust Control                           •  Trajectory Optimization

    • Mission Operations                                          • Orbit Determination 

    • Structural Dynamics                                        • Kalman Filtering 

    • Flight Software Development               • MATLAB/Simulink, C/C++, UML, Unix, SVN, CVS, Git

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    PROFESSIONAL EXPERIENCE

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Lead Engineer, Avionics Group

    Firefly Space Systems - Austin, TX

    March 2016 to Present

    * Lead engineer for the Alpha launch vehicle autonomous flight termination system (AFTS). Manage schedule, manpower, and budget.

    * Develop AFTS architecture, define subsystem requirements, perform hardware component trade studies, and code safety-critical software.

    * Interface with the FAA and RCC to acquire launch license. 

    Guidance, Navigation, and Controls Subsystem Lead

    Bigelow Aerospace - Las Vegas, NV

    January 2015 to January 2016

    Bigelow B330 Space Habitat

    * Acted as sole GN&C subsystem engineer in the company. Defined GN&C concept of operations, system architecture, and requirements.

    * Developed a 6-DOF simulation and analysis tool from the ground-up. Designed propellant optimal phase-plane attitude controller.

    Bigelow Expandable Activity Module (BEAM)

    * Developed mathematical model of BEAM deployment dynamics and performed monte carlo analyses.

    * Gained approval from the NASA Space Station Program Control Board (SSPCB) that BEAM may safely deploy on the ISS.

    * Authored the procedure that was used by the ISS astronauts to expand BEAM on-orbit. 

    Sr. Principal Engineer, GN&C Group

    Orbital Sciences Corporation - Dulles, VA

    March 2009 to March 2013

    Gravity and Extreme Magnetism Small Explorer (GEMS) Spacecraft

    * Lead GN&C analyst for the GEMS program. Directed the on-board attitude control, estimation, and orbit determination design.

    * Successfully led the GN&C subsystem development through the critical design review milestone ahead of schedule and under budget.

    Cygnus Advanced Maneuvering Spacecraft

    * Designed, coded, and tested the on-board attitude determination and orbit navigation modules. Flight code was written in C++ using a UML framework.

    * Vehicle has flown several successful missions to the ISS.

    Sr. Principal Engineer

    NASA Goddard Space Flight Center (Contractor) - Greenbelt, MD

    January 2008 to March 2009

    Magnetospheric Multiscale Mission (MMS)

    * Developed the 6-DOF, high-fidelity simulation tool used for the MMS constellation control system design.

    * Designed the primary on-board attitude determination system.

    * Spacecraft was launched in 2014 and is operational.

    Sr. Principal Engineer, GN&C Group

    Orbital Sciences Corporation - Dulles, VA

    1998 to 2008

    Contributed to the attitude determination and control design of most Orbital Sciences' spacecraft over a 14-year period. Have performed roles as both lead GN&C subsystem engineer and technical expert. Highlights include:

    Lead Attitude Control System Engineer, NSS-9 Spacecraft

    * Acted as lead ACS subsystem engineer for the NSS-9 geosynchronous commercial communications spacecraft, currently operational.

    * Managed analyses required for milestone reviews, software verification testing, schedule, and budget.

    Far Ultraviolet Spectroscopic Explorer (FUSE) Spacecraft

    * Devised innovative, real-time optimal slew guidance algorithm which enabled science mission to continue well past design life and after three out of four reaction wheels had failed.

    * Optimal slew guidance scheme increased feasible science target window from 1% to 70% of nominal mission window.

    GEOStar Commercial Communications Satellites

    * Designed and implemented the primary and back-up gyroless attitude determination system for Orbital's first three-axis stabilized commercial communications satellite.

    * Attitude control and estimation design is now being used on Orbital's entire product line of orbiting geosynchronous communications spacecraft.

    Sensor Calibration Software Package

    * Developed an alignment Kalman Filter tool used to estimate on-orbit sensor alignment and biases in redundant gyros and star trackers from telemetry.

    * Ground software has successfully been used to calibrate the Orbview-3, DAWN, AIM, and NuSTAR spacecraft.

    Orbview-3 Spacecraft

    * Led the development of the image mode command software in the mission planning system.

    * Spacecraft began acquiring 1 meter panchromatic and 4 meter multispectral imagery in 2003.

    Engineer, Structural Dynamics Group

    General Dynamics Space Systems - San Diego, CA

    1989 to 1992

    Member of the team which designed the Atlas/Centaur class commercial launch vehicles. Performed spacecraft coupled loads analyses using NASTRAN and DMAP. Developed a 6-DOF analysis tool used to compute launch vehicle and spacecraft loads during critical maximum dynamic pressure gust event. 

    ~~~~~~~~~~~~~

    EDUCATION

    ~~~~~~~~~~~~~

    1998 Aerospace Engineering (Control Theory)

    Doctor of Philosophy, - The University of Texas at Austin, Austin, TX

    * Dissertation:  Linear Parameter Varying Representations for Nonlinear Control Design

    * Performed doctoral research under Jeff Shamma.

    * Coursework included all topics in applied mathematics, statistical estimation theory, robust & optimal control, and flight dynamics.  

     

    1988 Aerospace Engineering

    Master of Science, - Virginia Polytechnic Institute & State University, Blacksburg, VA

     

    1987 Aerospace & Ocean Engineering

    Bachelor of Science, - Virginia Polytechnic Institute & State University, Blacksburg, VA

     

    ~~~~~~~~~~~~~~~~

    PUBLICATIONS

    ~~~~~~~~~~~~~~~~

    L. Carter and J. Shamma, Gain-Scheduled Bank-to-Turn Missile Autopilot Design Using Linear Parameter Varying Transformations, AIAA Journal of Guidance, Control, and Dynamics, Vol. 19, No. 5, Sept.-Oct. 1996.

     

    ~~~~~~~~~~

    AWARDS

    ~~~~~~~~~~

     

    * Certificate of Appreciation, Radarsat-2 Program, Orbital Sciences Corporation.

    * Graduate Research Fellowship, Air Force Office of Scientific Research.

    * University Fellowship Award, The University of Texas at Austin.

    * Pacesetter Award, General Dynamics Space Systems Division.

     

     


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