NDLI: Launch window analysis for the magnetospheric multiscale mission

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Launch window analysis for the magnetospheric multiscale mission

Content Provider	NASA Technical Reports Server (NTRS)
Author	Williams, Trevor W.
Copyright Year	2012
Description	The NASA Magnetospheric Multiscale (MMS) mission will fly four spinning spacecraft in formation in highly elliptical orbits to study the magnetosphere of the Earth. This paper describes the development of an MMS launch window tool that uses the orbitaveraged Variation of Parameter equations as the basis for a semi-analytic quantification of the dominant oblateness and lunisolar perturbation effects on the MMS orbit. This approach, coupled with a geometric interpretation of all of the MMS science and engineering constraints, allows a scan of 180(sup 2) = 32,400 different (RAAN, AOP) pairs to be carried out for a specified launch day in less than 10 s on a typical modern laptop. The resulting plot indicates the regions in (RAAN, AOP) space where each constraint is satisfied or violated: their intersection gives, in an easily interpreted graphical manner, the final solution space for the day considered. This tool, SWM76, is now used to provide launch conditions to the full fidelity (but far slower) MMS simulation code: very good agreement has been observed between the two methods.
File Size	604493
Page Count	19
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20140010795
Archival Resource Key	ark:/13960/t44r2wh2x
Language	English
Publisher Date	2012-01-29
Access Restriction	Open
Subject Keyword	Magnetospheric Launch Window Multiscale Mission Earth Magnetosphere Radii Magnetic Field Reconnection Perigees Apogees Launch Windows Orbit Perturbation Elliptical Orbits Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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