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By Space Force
Space Force officials have selected 14 senior master sergeants and 25 master sergeants for promotion in the 24S9 and 25S8 promotion cycles, respectively.
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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
ESI24 Haghighi Quadchart
Azadeh Haghighi
University of Illinois, Chicago
In-space manufacturing and assembly are vital to NASA’s long-term exploration goals, especially for the Moon and Mars missions. Deploying welding technology in space enables the assembly and repair of structures, reducing logistical burdens and supply needs from Earth. The unique challenges and extreme conditions of space–high thermal variations, microgravity, and vacuum–require advanced welding techniques and computational tools to ensure reliability, repeatability, safety, and structural integrity in one-shot weld scenarios. For the first time, this project investigates these challenges by focusing on three key factors: (1) Very low temperatures in space degrade the weldability of high thermal conductivity materials, like aluminum alloys, making it harder to achieve strong, defect-free welds. (2) The extreme vacuum in space lowers the boiling points of alloying elements, altering the keyhole geometry during welding. This selective vaporization changes the weld’s final chemical composition, affecting its microstructure and properties. (3) Microgravity nearly eliminates buoyancy-driven flow of liquid metal inside the molten pool, preventing gas bubbles from escaping, which leads to porosity and defects in the welds. By examining these critical factors using multi-scale multi-physics models integrated with physics-informed machine learning, and forward/inverse uncertainty quantification techniques, this project provides the first-ever real-time digital twin platform to evaluate welding processes under extreme space/lunar conditions. The models are validated through Earth-based experiments, parabolic flight tests, and publicly available data from different databases and agencies worldwide. Moreover, the established models will facilitate extendibility to support in-situ resource utilization on the Moon, including construction and repair using locally sourced materials like regolith. The established fundamental scientific knowledge will minimize trial-and-error, enable high-quality one-shot welds in space, and reduce the need for reworks, significantly reducing the costs and time needed for space missions.
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Space Technology Mission Directorate
STMD Solicitations and Opportunities
Space Technology Research Grants
About STRG
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By NASA
The overarching purpose of the OCKO is to cultivate and sustain a learning culture at Goddard in support of mission success. We have instituted various processes and programs for lessons learned and critical knowledge identification, sharing, and application. The focus of the OCKO is to promote local learning practices that enhances domain-specific expertise within an expanded framework of how NASA works. The Goddard OCKO provides leadership, coordination and support to center organizations to effectively identify lessons and critical knowledge that can be used to support mission execution.
Mission success at Goddard is driven by many factors including, but not limited to, teamwork, leadership, decision making and risk-informed prioritization of lessons. The OCKO has developed many technical case studies that touch on broad organizational issues, project implementation, technology and engineering development, procurement and contract management challenges, and other topics that contribute to mission success. Our learning programs and knowledge sharing activities are designed to transfer the experiences, technical wisdom and values embedded in our policies, procedures and processes.
The OCKO, whether through formal dissenting opinion processes, pause-and-learn exercises, or project reflective learning sessions, encourages our workforce to speak up in support of mission success. We promote a healthy culture where project teams discuss major events, milestones and reviews to ascertain “what happened and why it happened,” how to sustain strengths, and how to improve on weaknesses to enable collective discovery of contextual lessons for institutional learning.
As the Chief Knowledge Officer (CKO) of the NASA Goddard Space Flight Center, it is my sincere desire to help assure that Goddard operates as a learning organization to enhance the likelihood of mission success.
Moses Adoko, Chief Knowledge Officer
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By NASA
1 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Callista PuchmeyerCredit: NASA Cleveland State University (CSU) inducted Callista Puchmeyer, chief counsel at NASA’s Glenn Research Center in Cleveland, into the CSU College of Law Hall of Fame during a ceremony on Nov. 1.
Puchmeyer provides expert legal advice to NASA Glenn’s center director and other senior leaders. She also manages Glenn’s Office of the General Counsel, a diverse legal staff that advises Glenn clients on a broad spectrum of federal matters.
Established in 2017, CSU’s Law Hall of Fame honors the outstanding contributions of its distinguished alumni, faculty, staff, friends, and community leaders.
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By European Space Agency
Space startups and SMEs can meet ESA’s SME Office at Space Tech Expo, a space technology trade fair and conference in Bremen, Germany from 19–21 November.
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