Brent Sherwood - Academia.edu (original) (raw)

Papers by Brent Sherwood

Research paper thumbnail of International Search for Life in Ocean Worlds

AGU Fall Meeting Abstracts, Dec 1, 2015

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Research paper thumbnail of Architecting Ourselves: Schema to Facilitate Growth of the International Space Architecture Community

This paper develops a conceptual model, adapted from the way research and development non-profits... more This paper develops a conceptual model, adapted from the way research and development non-profits and universities tend to be organized, that could help amplify the reach and effectiveness of the international space architecture community. The model accommodates current activities and published positions, and increases involvement by allocating accountability for necessary professional and administrative activities. It coordinates messaging and other outreach functions to improve brand management. It increases sustainability by balancing volunteer workload. And it provides an open-ended structure that can be modified gracefully as needs, focus, and context evolve. Over the past 20 years, Space Architecture has attained some early signs of legitimacy as a discipline: an active, global community of practicing and publishing professionals; university degree programs; a draft undergraduate curriculum; and formal committee establishment within multiple professional organizations. However, the nascent field has few outlets for expression in built architecture, which exacerbates other challenges the field is experiencing in adolescence: obtaining recognition and inclusion as a unique contributor by the established aerospace profession; organizing and managing outreach by volunteers; striking a balance between setting admittance or performance credentials and attaining a critical mass of members; and knowing what to do, beyond sharing common interests, to actually increase the market demand for space architecture. This paper develops a conceptual model, adapted from the way research-anddevelopment non-profits and universities tend to be organized, that could help amplify the reach and effectiveness of the international space architecture community. The model accommodates current activities and published positions, and increases involvement by allocating accountability for necessary professional and administrative activities. It coordinates messaging and other outreach functions to improve brand management. It increases sustainability by balancing volunteer workload. And it provides an open-ended structure that can be modified gracefully as needs, focus, and context evolve. This organizational model is offered up for consideration, debate, and toughening by the space architecture community at large.

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Research paper thumbnail of Cost and Benefits of Lunar Oxygen: Economics, Engineering and Operations

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Research paper thumbnail of Operations Modeling of ISRU Lunar Base Architectures

LPICo, Jul 1, 2019

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Research paper thumbnail of Integrated Engineering Modeling of an ISRU Lunar Base

LPICo, Jul 1, 2019

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Research paper thumbnail of Strategic Map for Achieving Enceladus Ocean Exploration in Our Time

AGUFM, Dec 1, 2015

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Research paper thumbnail of Contemporary Priorities for Mars Exploration

Concepts and Approaches for Mars Exploration, Jun 1, 2012

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Research paper thumbnail of Gateway Gravity Testbed (GGT)

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Research paper thumbnail of Sylph: biosignature detection probe for potential Europa plumes

42nd COSPAR Scientific Assembly, Jul 1, 2018

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Research paper thumbnail of Implementable program for efficient ocean-world exploration

42nd COSPAR Scientific Assembly, Jul 1, 2018

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Research paper thumbnail of International cooperation in outer Solar System exploration

cosp, Jul 1, 2018

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Research paper thumbnail of Engineering aerobrakes for exploration missions

Acta Astronautica, Jun 1, 1990

Abstract This paper consolidates results of several recent Boeing studies, to outline the current... more Abstract This paper consolidates results of several recent Boeing studies, to outline the current state of knowledge regarding high energy aerobraking for manned space exploration. In order, we present a survey of distinct proposed concepts, reasonable performance parameter ranges for the missions of interest, configuration complications introduced by large aerobrakes, preliminary design and analysis of one concept and a feasible orbital assembly scenario, and assessment of relevant technology development programs.

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Research paper thumbnail of What's the big idea? seeking to top Apollo

International Astronautical Congress, Oct 1, 2012

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Research paper thumbnail of Planetary CubeSats Come of Age

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Research paper thumbnail of Program options to explore ocean worlds

Acta Astronautica, Feb 1, 2018

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Research paper thumbnail of JPL Innovation Foundry

Acta Astronautica, Aug 1, 2013

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Research paper thumbnail of Enceladus Life Finder (ELF): A Proposed Mission to Assess the Habitability of a Plume-Bearing World

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Research paper thumbnail of Exploring the Ocean Worlds

Including Earth, roughly a dozen water ocean worlds exist in the solar system: the relict worlds ... more Including Earth, roughly a dozen water ocean worlds exist in the solar system: the relict worlds Ceres and Mars, large Jovian and Saturnian icy moons with vast interior oceans, and Kuiper Belt Objects like Triton, Charon, and Pluto whose geologies are dominated by water and ammonia. The ocean-world science puzzle – which may reveal whether life is widespread in the cosmos, why it exists where it does, and how it originates – can only be solved by exploring all of them. Potential life in these places could not have shared our origins, yet these worlds contain the only evidence about life that we can touch, essentially forever. Thus, their exploration has existential significance. Planning a multiworld exploration campaign would be a multi-generational undertaking. The technical challenges are diverse and formidable, far harder than at Mars: missions to the Jovian and Saturnian ocean worlds are severely power-limited; trip times can be more than a decade. And the science targets are global-scale oceans beneath kilometers of cryogenic ice. Today, we lack the instrumentation, subsystems, and machine-intelligence technologies needed. A systematic OWEP (ocean worlds exploration program) strategy can make most effective use of funding and time. The three priority ocean-world targets are Europa at Jupiter, and Enceladus and Titan at Saturn. Five hypothetical programmatic scenarios are compared to the default case. A coherent OWEP should have several parts: first, dedicated continuous investment in enabling technologies; and second, two directed-purpose, medium-class (∼$1B) missions per decade that conduct pivotal investigations on a documented roadmap. A robust OWEP would cost about 1/40th more per year than NASA's current budget.

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Research paper thumbnail of JPL's Advanced CubeSat Concepts for Deep Space Exploration

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Research paper thumbnail of COSPAR Panel on Planetary Protection Colloquium, Bern, Switzerland, September 2015 (Meeting Reports)

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Research paper thumbnail of International Search for Life in Ocean Worlds

AGU Fall Meeting Abstracts, Dec 1, 2015

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Research paper thumbnail of Architecting Ourselves: Schema to Facilitate Growth of the International Space Architecture Community

This paper develops a conceptual model, adapted from the way research and development non-profits... more This paper develops a conceptual model, adapted from the way research and development non-profits and universities tend to be organized, that could help amplify the reach and effectiveness of the international space architecture community. The model accommodates current activities and published positions, and increases involvement by allocating accountability for necessary professional and administrative activities. It coordinates messaging and other outreach functions to improve brand management. It increases sustainability by balancing volunteer workload. And it provides an open-ended structure that can be modified gracefully as needs, focus, and context evolve. Over the past 20 years, Space Architecture has attained some early signs of legitimacy as a discipline: an active, global community of practicing and publishing professionals; university degree programs; a draft undergraduate curriculum; and formal committee establishment within multiple professional organizations. However, the nascent field has few outlets for expression in built architecture, which exacerbates other challenges the field is experiencing in adolescence: obtaining recognition and inclusion as a unique contributor by the established aerospace profession; organizing and managing outreach by volunteers; striking a balance between setting admittance or performance credentials and attaining a critical mass of members; and knowing what to do, beyond sharing common interests, to actually increase the market demand for space architecture. This paper develops a conceptual model, adapted from the way research-anddevelopment non-profits and universities tend to be organized, that could help amplify the reach and effectiveness of the international space architecture community. The model accommodates current activities and published positions, and increases involvement by allocating accountability for necessary professional and administrative activities. It coordinates messaging and other outreach functions to improve brand management. It increases sustainability by balancing volunteer workload. And it provides an open-ended structure that can be modified gracefully as needs, focus, and context evolve. This organizational model is offered up for consideration, debate, and toughening by the space architecture community at large.

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Research paper thumbnail of Cost and Benefits of Lunar Oxygen: Economics, Engineering and Operations

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Research paper thumbnail of Operations Modeling of ISRU Lunar Base Architectures

LPICo, Jul 1, 2019

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Research paper thumbnail of Integrated Engineering Modeling of an ISRU Lunar Base

LPICo, Jul 1, 2019

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Research paper thumbnail of Strategic Map for Achieving Enceladus Ocean Exploration in Our Time

AGUFM, Dec 1, 2015

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Research paper thumbnail of Contemporary Priorities for Mars Exploration

Concepts and Approaches for Mars Exploration, Jun 1, 2012

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Research paper thumbnail of Gateway Gravity Testbed (GGT)

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Research paper thumbnail of Sylph: biosignature detection probe for potential Europa plumes

42nd COSPAR Scientific Assembly, Jul 1, 2018

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Research paper thumbnail of Implementable program for efficient ocean-world exploration

42nd COSPAR Scientific Assembly, Jul 1, 2018

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Research paper thumbnail of International cooperation in outer Solar System exploration

cosp, Jul 1, 2018

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Research paper thumbnail of Engineering aerobrakes for exploration missions

Acta Astronautica, Jun 1, 1990

Abstract This paper consolidates results of several recent Boeing studies, to outline the current... more Abstract This paper consolidates results of several recent Boeing studies, to outline the current state of knowledge regarding high energy aerobraking for manned space exploration. In order, we present a survey of distinct proposed concepts, reasonable performance parameter ranges for the missions of interest, configuration complications introduced by large aerobrakes, preliminary design and analysis of one concept and a feasible orbital assembly scenario, and assessment of relevant technology development programs.

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Research paper thumbnail of What's the big idea? seeking to top Apollo

International Astronautical Congress, Oct 1, 2012

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Research paper thumbnail of Planetary CubeSats Come of Age

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Research paper thumbnail of Program options to explore ocean worlds

Acta Astronautica, Feb 1, 2018

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Research paper thumbnail of JPL Innovation Foundry

Acta Astronautica, Aug 1, 2013

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Research paper thumbnail of Enceladus Life Finder (ELF): A Proposed Mission to Assess the Habitability of a Plume-Bearing World

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Exploring the Ocean Worlds

Including Earth, roughly a dozen water ocean worlds exist in the solar system: the relict worlds ... more Including Earth, roughly a dozen water ocean worlds exist in the solar system: the relict worlds Ceres and Mars, large Jovian and Saturnian icy moons with vast interior oceans, and Kuiper Belt Objects like Triton, Charon, and Pluto whose geologies are dominated by water and ammonia. The ocean-world science puzzle – which may reveal whether life is widespread in the cosmos, why it exists where it does, and how it originates – can only be solved by exploring all of them. Potential life in these places could not have shared our origins, yet these worlds contain the only evidence about life that we can touch, essentially forever. Thus, their exploration has existential significance. Planning a multiworld exploration campaign would be a multi-generational undertaking. The technical challenges are diverse and formidable, far harder than at Mars: missions to the Jovian and Saturnian ocean worlds are severely power-limited; trip times can be more than a decade. And the science targets are global-scale oceans beneath kilometers of cryogenic ice. Today, we lack the instrumentation, subsystems, and machine-intelligence technologies needed. A systematic OWEP (ocean worlds exploration program) strategy can make most effective use of funding and time. The three priority ocean-world targets are Europa at Jupiter, and Enceladus and Titan at Saturn. Five hypothetical programmatic scenarios are compared to the default case. A coherent OWEP should have several parts: first, dedicated continuous investment in enabling technologies; and second, two directed-purpose, medium-class (∼$1B) missions per decade that conduct pivotal investigations on a documented roadmap. A robust OWEP would cost about 1/40th more per year than NASA's current budget.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of JPL's Advanced CubeSat Concepts for Deep Space Exploration

Bookmarks Related papers MentionsView impact

Research paper thumbnail of COSPAR Panel on Planetary Protection Colloquium, Bern, Switzerland, September 2015 (Meeting Reports)

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