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High Field Superconducting Magnets
Active Response Gravity Offload and Method
Strat-X
Sonar Inspection Robot System
Lightweight Internal Device to Measure Tension in Hollow- Braided Cordage
System, Apparatus, and Method for Pedal Control
Dust Tolerant Connectors
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Ultralow-Temperature-Operable Solid Propellant Binder

Marshall Space Flight Center, Alabama A unique binder was developed that exhibits a glass transition temperature of –100 °C, which is more than 50 °C lower than that of traditional HTPB (hydroxyl-terminated polybutadiene) and CTPB (carboxyl-terminated polybutadiene) binders. This innovation would be a solid propellant that would ameliorate low-temperature operability problems for the two-stage Mars Ascent Vehicle (MAV).

Posted in: Briefs, Materials

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Carbon Nanotube-Assisted Microwave Healing of Thermally Re-Mendable Composites

Lyndon B. Johnson Space Center, Houston, Texas A method creates thermally healable composites using carbon nanotubes. Carbon nanotube microwave heating provides a pathway to overcome issues associated with electrical resistive heating networks. Carbon nanotubes embedded within a thermally reversible polymer can be heated by direct exposure to a microwave source. The heat generated by the nanotubes can drive the thermally reversible polymerization of the matrix. Because the microwave source can be focused, the composite can be locally heated at the point of damage thereby reducing the energy requirements for thermal healing. The carbon nanotubes can conform to any shape, allowing the manufacture of complex shapes without concern of damaging the heating network.

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Aluminoborosilicate Supplement for Thermal Protection of a Re-entrant Vehicle

This material can be used in aircraft, turbine engines, automobiles, and any application that requires thermal protection surfaces. Ames Research Center, Moffett Field, California The Toughened Uni-piece Fibrous Reinforced Oxidation-Resistant Com posite (TUFROC) allows for much more affordable and sustainable operations involving Space Launch Services and other systems that utilize Earth reentry vehicles. TUFROC has an exposed surface design and appropriate materials combination that will allow a space vehicle to survive both the mechanical stresses of the initial ascent, and the extreme heating and stress of re-entry. It provides a thermal protection tile attachment system that is suitable for application to a space vehicle leading edge, and for other uses in extreme heating environments (up to 3600 °F, and possibly higher, for short time intervals).

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Processing and Manufacture of Inorganic-Organic Hybrid Syntactic Structural Cryogenic Insulator

John H. Glenn Research Center, Cleveland, Ohio Reducing the cost and weight of launch structures is essential to meeting NASA goals for reliable access to space. Currently, separate systems are used for structure and pressure containment, cryogenic insulation, and high-temperature insulation. One way of reducing this cost and weight is through the development of multifunctional materials that can eliminate parasitic weight. Combining two functional components — structure and insulation — reduces weight and structural complexity, which usually is akin to fragility in the system, and minimizes the need for parasitic thermal protection and insulation systems.

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Low Friction Plastic Technology For Single-use Drug Delivery Devices

Start-up coefficient of friction and stick-slip (or “stiction”) elimination are dominant performance drivers in single-use drug delivery devices that have moving parts. RTP Company has completed a rigorous investigation that establishes and defines a new friction test to measure and compare plastic-against-plastic friction behavior that occurs at initial startup. This new test uses forces and speeds that characterize the action of injection pens, auto-injectors, stop cocks, inhalers, safety syringes and other devices. This paper describes the newly created friction test method, and its core data point known as Glide FactorSM, as well a series of tests to compare the friction behavior of select polymers and internal lubricants for use in single-use drug delivery devices. The use of internally lubricated plastics can eliminate costly secondary operations to apply a topical lubricant, reduce the total amount of silicone that reaches the patient via the device, and improve the overall quality of the device. The goal of this paper is to share a tribological database that enables device designers to screen plastic-on-plastic friction pairs to optimize safe and effective material selections.

Posted in: MDB, White Papers, White Papers, Coatings & Adhesives, Materials, Medical

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Multifunctional Ablative Thermal Protection System

This material has applications in aerospace systems, manufacturing, and structural components requiring three-dimensional reinforcement. Ames Research Center, Moffett Field, California The Orion crew module highlighting the compression pads in the heat shield. NASA has developed a unique and robust multifunctional material called 3-Dimensional Multifunctional Ablative (3DMAT) Thermal Protection System (TPS) that meets both the structural and thermal performance needs for a lunar return mission and beyond. 3DMAT uses a game-changing woven technology tailored to the needs of the Orion Multi-Purpose Crew Vehicle (MPCV) compression pad. Compression pads serve as the interface between the crew module and service module of the Orion MPCV. The compression pads must carry the structural loads generated during launch, space operations, and pyroshock separation of the two modules. They must also serve as an ablative TPS withstanding the high heating of Earth re-entry. 3DMAT leverages NASA’s investment in woven TPS to design, manufacture, test, and demonstrate a prototype material for the Orion compression pads that combines the weaving of quartz yarns with resin transfer molding.

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Hierarchical Support for Nanocatalysts

Lyndon B. Johnson Space Center, Houston, Texas This work focused on enhancing catalyst activity and durability by developing a method to control size, dispersion, and exposure. Existing nanocatalysts are typically fabricated in bulk or powder form. There are monolithic catalysts, but they rely on meso-porous materials as supports. Bulk nanocatalysts suffer from a lack of complete exposure to reagents, counteracting the benefits of the nanoparticles. Catalysts upon meso-porous support have limited exposure due to diffusion distances through the porous support. This requires higher catalyst loading, and may lead to particle coalescence and deactivation.

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