Latest Space News
Tue, 13 Nov 2018 23:50:40 +0000
The smaller crew complement on the International Space Station created by last month’s Soyuz launch abort has not affected research activities there or plans to send new experiments on upcoming cargo missions. SpaceNews.com
Tue, 13 Nov 2018 18:27:05 +0000
The European Space Agency expects to carry out the qualification flight of the Space Rider spaceplane in 2021 followed by multiple demonstration missions before handing over the program to industry, according to Lucia Linares, head of ESA space transportation strategy and policy. SpaceNews.com
Tue, 13 Nov 2018 15:59:42 +0000
China unveiled a heavy-lift launch vehicle it is developing to carry a next-generation crewed spacecraft and power human spaceflight missions beyond low Earth orbit. SpaceNews.com
Tue, 13 Nov 2018 15:49:02 +0000
The European Space Agency plans to launch an Earth observation satellite equipped with an artificially intelligent processor that would enable the spacecraft to make decisions regarding what to image and which data to send to the ground. SpaceNews.com
Tue, 13 Nov 2018 15:00:23 +0000
Rupert Pearce, Inmarsat’s CEO, said Nov. 8 that the company is taking steps to retain customers in its largest market segment, having identified broadband for social use among crews as the missing component of Inmarsat’s maritime service offering. SpaceNews.com
Tue, 13 Nov 2018 12:20:10 +0000
A week after the sudden firing of Roberto Battiston as the head of the Italian Space Agency, the reasons for his ouster remain unclear while a grassroots effort is underway to restore his job. SpaceNews.com
Tue, 13 Nov 2018 08:34:23 +0000
The FCC will vote this week to considerproposed changes to orbital debris guidelines that could alter deployment plans for some satellite constellations and shorten the orbital lifetime for experimental satellites. SpaceNews.com
Mon, 12 Nov 2018 11:33:48 +0000
NASA is planning to replace its two-decade-old virtual institute devoted to astrobiology with a looser network of research teams, a move the agency said reflects the maturity of the field but which has some scientists concerned. SpaceNews.com
Sun, 11 Nov 2018 04:53:41 +0000
Rocket Lab successfully launched its Electron rocket Nov. 10 on a long-delayed first commercial mission for the small launch vehicle. SpaceNews.com
Sat, 10 Nov 2018 04:21:24 +0000
NASA signed an agreement in September with a foundation to support initial studies of a privately funded mission to a potentially habitable moon of Saturn. SpaceNews.com
Sat, 10 Nov 2018 01:02:53 +0000
The Trump administration’s desire to establish a Space Force could be in jeopardy next year after Democrats assume control of the House, while the departure of a key House appropriator could spell trouble for NASA missions to the potentially habitable moon of Europa. SpaceNews.com
Fri, 09 Nov 2018 11:49:52 +0000
NASA has certified SpaceX’s Falcon 9 to launch the agency’s most important science missions, giving the agency new options that could result in lower costs. SpaceNews.com
Thu, 08 Nov 2018 19:00:37 +0000
Building and launching spacecraft sometimes gets so much attention that the ground segment — user terminals, command and control systems and network operations —isn’t always ready even after a satellite is in space. SpaceNews.com
Thu, 08 Nov 2018 16:23:49 +0000
Ryals suggested a Space Development Agency could be helpful in providing a single voice for military space requirements. SpaceNews.com
Thu, 08 Nov 2018 14:03:49 +0000
The Canadian military, already a partner on two U.S. military satellite communications systems, is in discussions to use a third constellation that was until recently a U.S.-only system. SpaceNews.com
Thu, 08 Nov 2018 14:02:55 +0000
Grason: “We’re seeing a different type of support to get after the transformation, to elevate commercial satcom to where it needs to be, as vital infrastructure." SpaceNews.com
Thu, 08 Nov 2018 01:09:00 +0000
SpaceX Chief Executive Elon Musk said Nov. 7 that his company will attempt an orbital flight of a reusable version of a Falcon 9 upper stage by the middle of next year to test technologies for the company’s next-generation launch vehicle. SpaceNews.com
Wed, 07 Nov 2018 21:45:28 +0000
After completing the purchase of Sea Launch in April, S7 Group now views expendable rockets as uncompetitive. SpaceNews.com
Wed, 07 Nov 2018 17:09:05 +0000
DARPA has identified eight sites in the United States that it plans to use for a commercial launch competition, a selection that addresses one of the major concerns of potential competitors. SpaceNews.com
Wed, 07 Nov 2018 15:49:31 +0000
Air Force satcom buyer Tom Becht: "We see a lot of independent commercial offerings. They are all good. But it would be nice if we could figure out how to do this from an enterprise perceptive.” SpaceNews.com
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  • CV: Lead Avionics Engineer

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    Personal information
     Name:<withheld>
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    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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