NASA GMAT: Space Mission Design for Everyone
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NASA has a long history releasing code open source in support of its exploration mission. You may have heard about some successful NASA open source project before, like NASA WorldWind which has over 20 million downloads since 2005. One of the exciting projects currently being undertaken at NASA is an open source space mission design and analysis tool called GMAT - The General Mission Analysis Tool. Joel Parker from NASA’s Goddard Space Flight Center presented on the latest developments of the project today at the OSCON conference in Portland, Oregon. In case you missed it, I uploaded the slides here. For more information, visit http://open.nasa.gov.
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NASA GMAT: Space Mission Design for Everyone
- 1. NASA GMAT Space Mission Design for Everyone Joel J. K. Parker j.parker@nasa.gov Navigation and Mission Design Branch NASA Goddard Space Flight Center OSCON 2011
- 2. NASA GMAT Overview Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT Mission Design Features What is it? Demos Getting Started How do we do it? The Bigger Picture GMAT Features Demos Getting Started The Bigger Picture
- 3. NASA GMAT Overview Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT Mission Design Features What is it? Demos Getting Started How do we do it? The Bigger Picture Why are we here? GMAT To tell you what we’re doing, Features and to let you tell us how to do it Demos better. Getting Started The Bigger Picture
- 4. NASA GMAT Mission Design: What is it? Joel J. K. Parker j.parker@nasa.gov Mission Design Intuitively, mission design answers the question: What is it? How do we do it? GMAT How do we get from point A to point B (in space)? Features Demos Getting Started The Bigger Picture Mathematically, it solves the equation: F = ma Usually there are many possible answers. We want to find the one that is: Fastest;
- 5. NASA GMAT Mission Design: What is it? Joel J. K. Parker j.parker@nasa.gov Mission Design Intuitively, mission design answers the question: What is it? How do we do it? GMAT How do we get from point A to point B (in space)? Features Demos Getting Started The Bigger Picture Mathematically, it solves the equation: F = ma Usually there are many possible answers. We want to find the one that is: Fastest; Cheapest;
- 6. NASA GMAT Mission Design: What is it? Joel J. K. Parker j.parker@nasa.gov Mission Design Intuitively, mission design answers the question: What is it? How do we do it? GMAT How do we get from point A to point B (in space)? Features Demos Getting Started The Bigger Picture Mathematically, it solves the equation: F = ma Usually there are many possible answers. We want to find the one that is: Fastest; Cheapest; Safest;
- 7. NASA GMAT Mission Design: What is it? Joel J. K. Parker j.parker@nasa.gov Mission Design Intuitively, mission design answers the question: What is it? How do we do it? GMAT How do we get from point A to point B (in space)? Features Demos Getting Started The Bigger Picture Mathematically, it solves the equation: F = ma Usually there are many possible answers. We want to find the one that is: Fastest; Cheapest; Safest; Best
- 8. NASA GMAT Mission Design’s Greatest Hits Joel J. K. Parker j.parker@nasa.gov Mission Design Apollo What is it? How do we do it? GMAT Features Demos Getting Started The Bigger Picture free-return trajectory
- 9. NASA GMAT Mission Design’s Greatest Hits Joel J. K. Parker j.parker@nasa.gov Cassini Mission Design What is it? How do we do it? GMAT Features Demos Getting Started The Bigger Picture gravity assists
- 10. NASA GMAT Mission Design’s Greatest Hits Joel J. K. Parker j.parker@nasa.gov SMART-1 Mission Design What is it? How do we do it? GMAT Features Demos Getting Started The Bigger Picture low thrust
- 11. NASA GMAT Mission Design: How do we do it? Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? With lots of math. GMAT Features Demos Getting Started F = ma The Bigger Picture Forces: simple gravity, non-spherical gravity, third-body gravity, solar radiation pressure, atmospheric drag, propulsion, general relativity Algorithms: numerical integration, differential correction, optimization Infrastructure: coordinate systems, time systems, state representations, physical constants, file formats, graphics
- 12. NASA GMAT Mission Design: How do we do it? Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT And lots of software. Features Demos Getting Started The Bigger Picture STK FreeFlyer MATLAB Copernicus, Pyxis, MALTO, SPICE, CHEBYTOP, VARITOP, OTIS, Mystic, SBC, LTOC, MAnE, . . . Self-written tools in Perl, Python, C/C++, VB, Java, . . .
- 13. NASA GMAT The Problem Joel J. K. Parker j.parker@nasa.gov Last year the Navigation and Mission Design Branch (size: 33 engineers) Mission Design What is it? spent $800k on software licenses alone. How do we do it? GMAT Features Demos Getting Started Other, $250k The Bigger Picture Mission Design Software, $550k Software that we can’t examine, modify, debug, or learn from.
- 14. NASA GMAT The Solution: GMAT Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT Features Demos Getting Started The Bigger Picture GMAT: The General Mission Analysis Tool Cross-platform desktop application (Windows, Mac, Linux) Domain-specific scripting language Written in C++ with wxWidgets Extensive force models, differential corrector, optimizers, estimators Graphics: 3D OpenGL, 2D plotting, 2D mapping Extensible via plugins, native functions, MATLAB functions Automation via C, TCP/IP, MATLAB
- 15. NASA GMAT Major Features Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT Features Demos Getting Started The Bigger Picture Developed by a team of private industry and NASA civil servants, led by Goddard Space Flight Center Contributions from NASA centers, other agencies, academia, industry, international users Open source, released under NASA Open Source Agreement (NOSA) Developed in public on SourceForge
- 16. NASA GMAT Demos Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT Features Demos Getting Started Demo 1: ISS Simulation The Bigger Picture Demo 2: OSIRIS-REx Design
- 17. NASA GMAT Now Try it Yourself Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? GMAT ships with nearly 40 example mission scripts: How do we do it? GMAT Geostationary Features Demos Getting Started LCROSS The Bigger Picture MMS Mars transfer Lunar transfer Libration points These and more are available on our wiki: gmat.ed-pages.com/wiki/MissionLibrary
- 18. NASA GMAT How do I get started? Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT Download the app: Features Demos sf.net/projects/gmat Ask on the forum: Getting Started The Bigger Picture gmat.ed-pages.com/forum Read through the docs: gmat.sf.net/docs Follow the blog: gmat.sf.net/blog Check out the wiki: gmat.ed-pages.com/wiki
- 19. NASA GMAT How can I help? Joel J. K. Parker j.parker@nasa.gov For experts. . . Mission Design Look through our algorithms, math spec, design documents What is it? How do we do it? Recreate an interesting mission and post it to our library GMAT Features If you can code. . . Demos Getting Started Help improve code quality The Bigger Picture Submit, verify, and quash bugs Follow our dev blog: gmatplugins.sf.net/blog If you care about what we’re doing and just want to help. . . Hang out on the wiki and forum Help improve our documentation Share with your friends gmat.ed-pages.com/wiki/HowCanIHelp
- 20. NASA GMAT Now, the bigger picture... Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? NASA has a history of supporting open source. GMAT Features NASA Open Source Agreement (NOSA) Demos Getting Started WorldWind: over 20 million downloads since 2005 The Bigger Picture opensource.gsfc.nasa.gov (46 registered projects) opensource.arc.nasa.gov (23 registered projects) 2011 NASA Open Source Summit nasa.gov/open
- 21. NASA GMAT Thank you Joel J. K. Parker j.parker@nasa.gov Mission Design What is it? How do we do it? GMAT Features Demos Getting Started The Bigger Picture