Latest Space News
Thu, 21 Sep 2017 08:38:00 +0100
For the first time in its 19-year history, SMi Group’s Global MilSatCom Conference & Exhibition will be featuring South Korea in its speaker line-up for this year’s event. With recent threats surging within the region, South Korea has instilled urgency in the race to perfect milsatcom systems to ensure overall robust defence capability. Commander of Defence Communication Command, Brigadier General Nag Jung Choi, will be presenting a keynote address on Day 3 of the conference...
Wed, 20 Sep 2017 16:45:00 +0100
In the first act of lunar exploration, Neil Armstrong and Buzz Aldrin were major characters. In setting its sights on the Moon, ESA hopes to bring many more actors to this off-world stage. By testing the market for transport services to the Moon, ESA aims to push the limits of technology and create new models of space business. Touching down on the Moon was a monumental moment in human history. Eight short years and enormous resources took humankind to the lunar surface, initially for le...
Wed, 20 Sep 2017 12:00:00 +0100
Astronomers have used ALMA to capture a strikingly beautiful view of a delicate bubble of expelled material around the exotic red star U Antliae. These observations will help astronomers to better understand how stars evolve during the later stages of their life-cycles. In the faint southern constellation of Antlia (The Air Pump) the careful observer with binoculars will spot a very red star, which varies slightly in brightness from week to week. This very unusual star is called U Antliae and...
Wed, 20 Sep 2017 11:03:00 +0100
SES, EchoStar Corp., and Airbus Defence and Space announced today that the new EchoStar 105/SES-11 spacecraft, built by Airbus, has been shipped from the Airbus facilities in Toulouse, France, to Cape Canaveral, Florida, for its forthcoming launch by SpaceX in October. The first satellite that EchoStar has constructed with manufacturer Airbus, EchoStar 105/SES-11 will be launched by SpaceX on a flight-proven Falcon 9 rocket from Launch Complex 39A at Kennedy Space Center, Florida. EchoStar 10...
Tue, 19 Sep 2017 19:30:00 +0100
Today Lockheed Martin (NYSE: LMT) debuted a new family of satellite buses that form the core of nearly every space mission. From nanosats to high-powered satellites, the versatile lineup incorporates dozens of major enhancements and hundreds of common components that speed production and reduce cost. The company announced the lineup at the Air Force Association Air, Space & Cyber Conference. "We've invested $300 million in revamping our satellite solutions from top to bottom, applying what we...
Tue, 19 Sep 2017 15:54:00 +0100
FLYHT Aerospace Solutions Ltd. (TSX VENTURE: FLY) (OTCQX: FLYLF) (the "Company" or "FLYHT") is pleased to announce a flight trial with Inmarsat, and would like to bring attention to an Inmarsat press release titled Inmarsat to demonstrate advanced SwiftBroadband-Safety capabilities in flight trial with FLYHT on September 19, 2017. This trial will demonstrate the use of FLYHT's Automated Flight Information Reporting System (AFIRS(tm)) to send data to the UpTime(tm) Cloud management platform via I...
Tue, 19 Sep 2017 14:53:00 +0100
With the ''Space Strategy for Europe'' from the European Commission and the new ESA roadmap on the table, the European space stakeholders will have the great opportunity to debate and influence, at the highest level, the medium and long term development of European space programmes and of the spread of space services in many economic and societal activities as well as in a wide range of public fields, including security and defence. Download Conference Agenda | Register to a...
Tue, 19 Sep 2017 14:00:00 +0100
Kratos Defense & Security Solutions, Inc. (NASDAQ:KTOS), a leading National Security Solutions provider, announced today that it has recently received approximately $8.2 million in orders or specialized products in support of satellite global positioning system protection and communication systems. Work on these recent orders will be performed in secure Kratos manufacturing facilities. Due to customer related, competitive and other considerations, no additional information will be provided rel...
Tue, 19 Sep 2017 11:51:00 +0100
The Sun's recent activity has caught the interest of scientists and space weather forecasters worldwide, highlighting the need to keep a watchful eye on our star and its awesome power. On 6 and 10 September, our Sun produced a pair of solar flares, the strongest observed in over 10 years. They were accompanied by huge eruptions of billions of tonnes of matter into space. While many such eruptions fall back onto the hot surface, these two did not and became 'coronal mass ejections' (CMEs) -...
Tue, 19 Sep 2017 08:19:00 +0100
NASA's Hubble Space Telescope has observed a planet outside our solar system that looks as black as fresh asphalt because it eats light rather than reflecting it back into space. This light-eating prowess is due to the planet's unique capability to trap at least 94 percent of the visible starlight falling into its atmosphere. The oddball exoplanet, called WASP-12b, is one of a class of so-called "hot Jupiters," gigantic, gaseous planets that orbit very close to their host ...
Fri, 15 Sep 2017 18:13:00 +0100
Raytheon Company (NYSE: RTN) will continue its support for NOAA's Advanced Weather Interactive Processing System program that ingests and analyzes weather data, creating useful visualizations for forecasters and distributing time-sensitive weather statements such as watches and warnings across the United States. Used by more than 140 National Weather Service field offices, the AWIPS program informs decisions that save lives and protect property during natural disasters. Under the $269 mill...
Fri, 15 Sep 2017 15:00:00 +0100
The international Cassini mission has concluded its remarkable exploration of the Saturnian system in spectacular style, by plunging into the gas planet's atmosphere. Confirmation of the end of mission arrived at NASA's Jet Propulsion Laboratory at 11:55 GMT/13:55 CEST with the loss of the spacecraft's signal having occurred 83 minutes earlier at Saturn, some 1.4 billion km from Earth. With the rocket propellant for manoeuvering the spacecraft fully expended as planned touring Saturn and i...
Fri, 15 Sep 2017 14:17:00 +0100
Four of the latest set of Galileo navigation satellites will be launched on Ariane 6 rockets - ESA's first contract to use Europe's new vehicle. The launches are scheduled between the end of 2020 and mid-2021, using two Ariane 62 rockets - the configuration of Europe's next-generation launch vehicle that is best suited to haul the two 750 kg navigation satellites into their orbits at 23 222 km altitude. Under development, Ariane 6 is Europe's newest launcher, designed to extend guaranteed ...
Fri, 15 Sep 2017 14:00:00 +0100
The Space Alliance, formed by Thales Alenia Space (Thales 67%, Leonardo 33%) and Telespazio (Leonardo 67%, Thales 33%), today signed a partnership with the US-based company Spaceflight Industries which includes the following elements: A minority investment in Spaceflight Industries, which through its BlackSky business, has developed a geospatial platform and plans to build and operate a constellation of 60 small high-resolution observation satellites featuring very short revisit times; ...
Tue, 12 Sep 2017 16:33:00 +0100
Lockheed Martin (LM) unveiled a new small unmanned aircraft system (UAS) that has been designed and developed in the UK at the Defence and Security Equipment International (DSEI). OUTRIDER is a lightweight, canister launched UAS that has been designed by engineers at Lockheed Martin UK's Havant facility in partnership with Wirth Research, an engineering company with specialisation in aerodynamics and composite materials. At only four inches wide and weighing only 1.7 kilograms, it is designed...
Mon, 11 Sep 2017 13:00:00 +0100
Orbital ATK, a global leader in aerospace and defense technologies, today announced significant progress on the industry's first commercial in-space satellite servicing system. The Mission Extension Vehicle-1 (MEV-1) spacecraft successfully completed its critical design review earlier this year and is now in production with about 75% of the platform and payload components already delivered to the company's Satellite Manufacturing Facility in Virginia. The spacecraft will begin system-level testi...
Mon, 11 Sep 2017 10:07:00 +0100
Boeing will design and build seven super-powered medium earth orbit (MEO) satellites for SES, delivering efficient high-performance data communications services to users around the world. The O3b mPOWER satellites will include Boeing's most-advanced digital payload technology and will be built using electronics from the flight-proven 702 satellite platform customized to support the unique MEO environment. "With this new technology and design, Boeing is able to build satellites faster and m...
Wed, 6 Sep 2017 16:31:00 +0100
EchoStar Corporation and Lockheed Martin announced today that the EchoStar III satellite has been successfully recovered following an anomaly that occurred in late July and retired per the FCC regulations. "After the initial loss of contact, with a joint effort by EchoStar and Lockheed Martin, a command and control link was reestablished and deorbit maneuvers performed" said Derek de Bastos, chief technology officer for EchoStar Satellite Services L.L.C. "EchoStar III is now safely in a grave...
Wed, 6 Sep 2017 15:24:00 +0100
Orbital ATK, a global leader in aerospace and defense technologies, recently completed an important qualification test of the avionics system for the solid rocket boosters the company has developed and is now manufacturing for NASA's Space Launch System (SLS). Completion of this milestone is an important step toward preparing the SLS and Orion spacecraft for their first flight in 2019. Two Orbital ATK-developed five-segment rocket boosters will be used on each SLS launch to help provide initial ...
Tue, 5 Sep 2017 14:07:00 +0100
Launch is the most strenuous part of a satellite's life. To survive the extreme sound wave pressure and pounding vibrations generated by more than 700,000 lbs. of thundering rocket thrust, spacecraft need a solid, reliable design if they hope to arrive operational on orbit. On July 13, Lockheed Martin (LMT)'s second, fully-assembled GPS III space vehicle (SV) completed a realistic simulation of its future launch experience and passed this critical acoustic environmental test with flying color...
More space news...
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  • CV: GNC 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:01-01-2012
     Last Modified:01-01-2012 (07:23)
    Job information
     Current job:GNC Engineer
     Employment Term:Either
     Job location:Own country
     Date available:immediately
     Industry:Satellite Manufacturers and Subcontractors, Satellite Operators, , , Launch Systems
     KeywordsI am the only GNC Engineer able to tune guidance and control systems for complex aerospace maneuvers without using gain scheduling.
    CV
    RESEARCH AND DEVELOPMENT SCIENTIST/ENGINEER
    Guidance, Navigation, and Control Algorithms ~ Software Development ~ Computational Theory and Design ~ System Analysis and Simulation ~ Proposal Development
     
    Secret Security Clearance 
     
    DISTINGUISHED ACHIEVEMENT
    Linear Time Invariant (LTI) Six Degree of Freedom Differential Equations:
    Only scientist/engineer in the world who can devise GNC algorithms for difficult aerospace maneuvering scenarios without using gain scheduling or other types of nonlinear control.
    Currently developing a full fidelity 6-DOF state feedback control loop with constant gains using quaternion mathematics to separate inertial and body rotational dynamics.
    Also developing a quaternion Kalman filter with constant Kalman gains.
     
    PROFESSIONAL SUMMARY
    Guidance, Navigation, and Control (GNC) Engineer                                    2010 to 2011
    Masten Space Systems, Mojave, CA
    Six degree of freedom (6-DOF) suborbital vertical takeoff vertical landing (VTVL) rocket flight simulation
    o Created flight profiles up to 30 km in altitude in preparation for NASA CRuSR launches.
    o Modified vehicle properties (mass properties, engine characteristics, rcs, etc.) and analyzed simulation results for new suborbital VTVL rocket to ensure attitude control system stability and nominal mission conditions.
    o Determined abort and terminate parameter limits using simulation trajectory results.
    Hardware in the Loop (HWIL) simulation
    o Validated flight profiles up to 5 km in altitude for NASA CRuSR launches.
    o Analyzed simulation results for planned vehicle flight tests to ensure parameters were properly set.
    o Validated abort and terminate parameter limits using simulation results.
    Operational engine/vehicle testing
    o Issued commands remotely to onboard flight management system (activating/deactivating valves, testing various engine components, initiating engine ignition) during field testing.
    o Created a checklist with step by step instructions for rocket flight preparations and suggestions for dealing with off nominal conditions.
    NASA SBIR Proposal Submission (Navigation Flight Dynamics Software and Technologies Topic)
    o Proposed using a quaternion exponential Kalman (QEK) filter to map the nonlinear state equations to an equivalent linear space to meet NASA’s objective of improving the navigation filter for GNC systems.
     
    Guidance, Navigation, and Control (GNC) Engineer                               2008 to 2009
    Miltec Missiles and Space, Huntsville, AL
    Foreign anti-tank 6-DOF missile simulation
    o Debugged and modified existing 6-DOF missile simulation developed in C++.
    o Tested simulation autopilot with step commands, zero acceleration and step acceleration commands.
    o Modified and debugged line of sight (LOS) proportional derivative guidance subroutine using azimuth and elevation angles to the missile and target, including guidance gain tuning for trajectory optimization.
    o Integrated missile simulation into a package containing a scene generator and a missile/target tracker, including synchronizing the different applications and retuning the guidance gains.
    o Developed a roll autopilot to keep the missile at a zero roll angle.
    o Shot missile ten degrees off boresight from the target to test the guidance system and autopilot.
    Upper atmospheric hypersonic glider 6-DOF simulation
    o Conducted linear stability analysis on glider endo- and exo-atmospheric maneuvers.
    o Conducted research into and began development of a dynamic inversion autopilot.
    o Began applying quaternion exponentials to autopilot design to improve control system robustness
     
    Doctoral Student Research Assistantship, Old Dominion University, Norfolk, VA                           2003 to 2008
    Invented a new type of eigenvalue for quaternion mathematics to facilitate development of a linear time invariant (LTI) set of 6-DOF equations.  Currently formulating a quaternion frequency domain method of solution.
    Dissertation research in inertial guidance, navigation and attitude control.
    Presented conference papers at professional AIAA conferences/exhibits.
     
    Research Scientist and Engineer (Mathematician)                                         1990 to 2003
    Naval Surface Warfare Center, Dahlgren Division, Dahlgren, VA                                                               
    SLBM Research and Analysis Division
    o Developed a simulation for an experimental flapped re-entry body and analyzed the resulting trajectory.  
    o Reduced 6-DOF reentry simulation execution time by two-thirds by fitting a time varying sine wave to the quaternion components and switching the state vector from angular velocity to quaternion first derivative.
    o Investigated further 6-DOF modifications using quaternion mathematics.  
    o Developed methods of optimizing EMP attacks.
    o Researched application of genetic algorithms, simulated annealing, and other combinatorial algorithms to sequencing and grouping of missile attacks.
    o Analyzed terrain effects on the fuzing system, and conducted other fuze studies.
    o Developed a graphical program for analyzing plume impingement on re-entry bodies.
    SLBM Software Development Division
    o Developed various systems and applications software programs.
    o Replaced the Runge-Kutta method with a predictor-corrector method in a 6-DOF re-entry simulation in the upper part of the atmosphere and combined with other modifications to reduce the execution time by 85%.
    o Developed an object-oriented 6-DOF re-entry simulation.
     
    Career Note: Additional Position as Systems Engineer (Contractual) for Aerodyne Industries, LLC 
    Antares six degree of freedom launch vehicle simulation
    o Added Monte Carlo capabilities for mass properties dispersions of launch vehicle elements.
     
    Education
     
    Ph.D. in Aerospace Engineering, Old Dominion University, admitted to candidacy, expected graduation              Fall 2011
    Norfolk, VA
     
    Ph.D. work in Computational Sciences and Informatics (Mathematics track), George Mason University,            1995-2000
    Fairfax, VA
     
    Master of Science in Computer Science, Virginia Polytechnic Institute and State University,                      December 1994
    Blacksburg, VA
     
    Bachelor of Science in Mathematics (computational track), Pennsylvania State University, State College, PA    May 1990
     
    Publications
     
    Davailus, G.P.; “Linear Time Invariant Formulation of the Gyroscopic Problem using Quaternion Mathematics”. AIAA-2011-1224, 49th AIAA Aerospace Sciences Meeting; Orlando, FL., January 2011
     
    Davailus, G.P.; Newman, B.A.; “The Application of Quaternion Algebra to Gyroscopic Motion, Navigation, and Guidance”, AIAA-2005-5945, AIAA Guidance, Navigation, and Control Conference and Exhibit; San Francisco, CA., August 2005
     
    Davailus, G.P.; “The Transformation of Oscillatory Equations in Six Degree of Freedom Trajectory Simulations Involving Coordinate Transformations”, M.S. Thesis, Department of Computer Science, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 1994.

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