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SBC: Keystone Synergistic Enterprises, LLC Topic: T901
The Keystone and MSU team propose to build on the successful feasibility demonstration conducted during Phase I to complete the development of solid-state joining of high strength and temperature alloys utilizing the Thermal Stir Welding process. The focus alloy for this project is Haynes 230; the alloy of choice typically utilized in rocket engine nozzel skirts. This class of alloy is difficult t ...STTR Phase II 2010 National Aeronautics and Space Administration
SBC: CFD RESEARCH CORPORATION Topic: T701
Current modeling of Lunar and Martian soil erosion and debris transport caused by rocket plume impingement lacks essential physics from the peculiar granular characteristics of highly irregular regolith particles. Current granular mechanics models are based on mono-disperse spherical particles empiricism unsuitable for capturing the poly-disperse irregularly shaped grain mechanics. CFDRC and the U ...STTR Phase II 2010 National Aeronautics and Space Administration
SBC: TDA RESEARCH, INC. Topic: T601
A spacecraft thermal control system must keep the vehicle, avionics and atmosphere (if crewed) within a defined temperature range. Since water is non-toxic and good for heat transport, it is typically used as the coolant that circulates within the crew cabin boundary. This loop then interfaces with another low freeze point fluid, such as ammonia, for transport of heat to a radiator where the tempe ...STTR Phase II 2013 National Aeronautics and Space Administration
Closed-Loop Control of the Thermal Stir Welding Process to Enable Rapid Process / Part QualificationSBC: Keystone Synergistic Enterprises, LLC Topic: T901
Thermal Stir Welding (TSW) provides advancement over the more conventional Friction Stir Welding (C-FSW) process because it separates the primary processes variables thereby allowing independent control of metal stirring and forging from the stir zone temperature. However, the feedback for precise control of the stir zone temperature, and hence the process parameters to sustain that temperature wi ...STTR Phase II 2013 National Aeronautics and Space Administration
Metal Digital Direct Manufacturing (MDDM) for Close-Out of Combustion Chambers and Nozzle FabricationsSBC: Keystone Synergistic Enterprises, LLC Topic: T1204
This NASA sponsored STTR project will investigate methods for close-out of large, liquid rocket engine, nickel or stainless steel nozzle, coolant channels utilizing robotic laser and pulsed-arc additive manufacturing (AM)methods. Structural jacket to coolant channel land area interface strength will be quantified and metallurgical characterization completed. Process optimizations will be conducte ...STTR Phase II 2017 National Aeronautics and Space Administration
SBC: Prime Photonics, LC Topic: T1201
Prime Photonics proposes to team with Dr. Duke of Virginia Tech to develop a multi-mode, enhanced piezoelectric acoustic emission sensing system to couple large damage events to local distribution of damage accommodation. Our system will be centered around an instrument designed to accept the output of a piezoelectric transducer sensitive to in-plane acoustic events. The signal processing path w ...STTR Phase II 2016 National Aeronautics and Space Administration
SBC: FIBERTEK, INC. Topic: T901
Fibertek, Inc. in partnership with researchers at the Pennsylvania State University Center for Innovative Materials Processing through Direct Digital Deposition (CIMP-3D) are proposing to develop a state of the art, space-qualifiable laser transmitter that meets the requirements of the flash lidar transmitter defined in the 2016 STTR subtopic T9.01, Navigation and Hazard Avoidance Sensor Technolog ...STTR Phase II 2017 National Aeronautics and Space Administration
SBC: CFD RESEARCH CORPORATION Topic: T602
High-energy space radiation from Galactic Cosmic Rays and Solar Particle Events (SPEs) pose significant risks to equipment and astronaut health in NASA missions. Energetic particles from SPEs associated with flares and coronal mass ejections (CMEs) may adversely affect not only beyond-Low-Earth-Orbit missions, but also aircraft avionics, communications, and airline crew/passenger health. It is cru ...STTR Phase II 2016 National Aeronautics and Space Administration
SBC: CORNERSTONE RESEARCH GROUP INC Topic: T1202
Supporting aerospace mission readiness, a system is needed that allows for composite repairs without the current roadblocks imposed by ovens, autoclaves, and expensive tooling. Cornerstone Research Group (CRG), its subsidiary NONA Composites, and the University of Dayton Research Institute (UDRI) presents NASA with the opportunity to obtain a rapid and robust method for on-site composite structura ...STTR Phase II 2017 National Aeronautics and Space Administration
SBC: Universal Technology Corporaration Topic: T1204
In this Phase II STTR project, the proposed collaborative effort between UTC, AFIT, and ULRF represents a crucial step forward for AM. UTC’s unique AM optimization and process control framework, constructed entirely from experimental sensor data collected in-situ, will finally transfer technology from our SLM test bed system to state-of-the-art and commercial-grade systems, including a Concept ...STTR Phase II 2017 National Aeronautics and Space Administration