Mr. Benjamin Donovan Profile

Benjamin Donovan

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Publications (4)

Proceedings Article | 24 August 2024 Poster

SALTUS space observatory architecture

Jonathan Arenberg, Christopher Walker, Daewook Kim, Leon Harding, Benjamin Donovan, David Oberg, Ryan Goold

Proceedings Volume 13092, 130923C (2024) https://doi.org/10.1117/12.3020441

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SPIE Journal Paper | 22 August 2024 Open Access

SALTUS probe class space mission: observatory architecture and mission design

Leon Harding, Jonathan Arenberg, Benjamin Donovan, Dave Oberg, Ryan Goold, Bob Chang, Christopher Walker, Dana Turse, Jim Moore, Jim Pearson, John Kidd, Zach Lung, Dave Lung

JATIS, Vol. 10, Issue 04, 042303, (August 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.4.042303

KEYWORDS: Space operations, Observatories, Design, Data storage, Equipment, Cryogenics, James Webb Space Telescope, Reflectors, Control systems, Sun

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We describe the space observatory architecture and mission design of the Single Aperture Large Telescope for Universe Studies (SALTUS) mission, a National Aeronautics and Space Administration (NASA) Astrophysics Probe Explorer concept. SALTUS will address key far-infrared science using a 14-m diameter <45 K primary reflector (M1) and will provide unprecedented levels of spectral sensitivity for planet, solar system, and galactic evolution studies and cosmic origins. Drawing from Northrop Grumman’s extensive NASA mission heritage, the observatory flight system is based on the LEOStar-3 spacecraft platform to carry the SALTUS Payload. The Payload is comprised of the inflation control system, sunshield module (SM), cold corrector module (CCM), warm instrument electronics module, and primary reflector module (PRM). The 14-m M1 is an off-axis inflatable membrane radiatively cooled by a two-layer sunshield (∼1000 m2 per layer). The CCM corrects for residual aberration from M1 and delivers a focused beam to two instruments—the High-Resolution Receiver (HiRX) and SAFARI-Lite. The CCM and PRM reside atop a truss-based composite deck that also provides a platform for the attitude control system. The SALTUS 5-year mission lifetime is driven by a two-consumable architecture: the propellant system and the inflation control system. The core interface module (CIM), a multi-faceted composite truss structure, provides a load path with high stiffness, mechanical attachment, and thermal separation between the Payload and spacecraft. The SM attaches outside the CIM with its aft end integrating directly to the bus. The spacecraft maintains an attitude off M1’s boresight with respect to the Sun line to facilitate the <45 K thermal environment. SALTUS will reside in a Sun–Earth halo L2 orbit with a maximum Earth slant range of 1.8 million km, thereby reducing orbit transfer delta-v. The instantaneous field of regard provides two continuous 20 deg viewing zones around the ecliptic poles, resulting in full sky coverage in 6 months.

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Proceedings Article | 21 August 2024 Presentation + Paper

The Arcus Probe Mission

Randall Smith, Jon Arenberg, Marshall Bautz, Ehud Behar, Dolon Bhattacharyya, Jay Bookbinder, Joel Bregman, Laura Brenneman, Nancy Brickhouse, G. Esra Bulbul, Vadim Burwitz, Joseph Bushman, Peter Cheimets, Elisa Costantini, Casey Deroo, Benjamin Donovan, Abraham Falcone, Brian Fleming, Adam Foster, Kevin France, Peter Friedrich, Luigi Gallo, Catherine Grant, H. Moritz Günther, Daryl Haggard, Ralf Heilmann, Sarah Heine, Butler Hine, David Huenemoerder, Jelle Kaastra, Igor Kreykenbohm, Sibasish Laha, Pamela Marcum, Herman Marshall, Randall McEntaffer, Missagh Mehdipour, Eric Miller, Jon Miller, Kirpal Nandra, Nicholas Nell, Michael Nowak, Frits Paerels, Katya Poppenhaeger, Andrew Ptak, Agata Rozanska, Jenna Samra, Jeremy Sanders, Mark Schattenburg, Norbert Schulz, Leroy Mark Sparr, Pasquale Temi, Todd Tripp, Lynne Valencic, Joern Wilms, Stephen Walker, David Wilson, Scott Wolk

Proceedings Volume 13093, 1309326 (2024) https://doi.org/10.1117/12.3022452

KEYWORDS: X-rays, Ultraviolet radiation, Spectroscopy, Galactic astronomy, Stars, Physics, Data modeling, Absorption, Solar processes, Metals

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Proceedings Article | 5 October 2023 Poster + Paper

Background simulations for the high energy x-ray probe (HEX-P)

Kristin Madsen, Henrike Fleischhack, Daniel Violette, Brian Grefenstette, Andreas Zoglauer, Jonathan Arenberg, Benjamin Donovan, Patrick Morrissey, Daniel Stern

Proceedings Volume 12678, 126781B (2023) https://doi.org/10.1117/12.2676891

KEYWORDS: Particles, Simulations, X-rays, Equipment, Design and modelling, Attenuation, Telescopes, Sensors

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