The High Inclination Solar Mission Arxiv:2006.03111V1
The High Inclination Solar Mission Kobayashi, Ken1, Johnson, Les1, Thomas, Herbert D.1, McIntosh, Scott2, McKenzie, David1, Newmark, Jeffrey3, Heaton, Andy1, Carr, John1, Baysinger, Mike1, Bean, Quincy1, Fabisinski, Leo1, Capizzo, Pete1, Clements, Keith1, Sutherlin, Steve1, Garcia, Jay1, Medina, Kamron4, and Turse, Dana4 1NASA Marshall Space Flight Center 2High Altitude Observatory 3NASA Goddard Space Flight Center 4Roccor, LLC June 8, 2020 Abstract The High Inclination Solar Mission (HISM) is a concept for an out-of-the-ecliptic mission for observing the Sun and the heliosphere. The mission profile is largely based on the Solar Polar Imager concept[Liewer et al., 2008]; initially taking ∼2.6 yrs to spiral in to a 0.48 AU ecliptic orbit, then increasing the orbital inclination at a rate of ∼ 10 degrees per year, ultimately reaching a heliographic inclination of >75 degrees. The orbital profile is achieved using solar sails derived from the technology currently being developed for the Solar Cruiser mission, currently under development. HISM remote sensing instruments comprise an imaging spectropolarimeter (Doppler imager / magnetograph) and a visible light coronagraph. The in-situ instruments in- clude a Faraday cup, an ion composition spectrometer, and magnetometers. Plasma wave measurements are made with electrical antennas and high speed magnetometers. The 7; 000 m2 sail used in the mission assessment is a direct extension of the 4- 2 arXiv:2006.03111v1 [astro-ph.IM] 4 Jun 2020 quadrant 1; 666 m Solar Cruiser design and employs the same type of high strength composite boom, deployment mechanism, and membrane technology. The sail system modelled is spun ( 1 rpm) to assure required boom characteristics with margin.
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