Materials & Coatings

Using Paraffin Phase Change Material to Make Optical Communication-Type Payloads Thermally Self-Sufficient for Operation in Orion Crew Module

Goddard Space Flight Center, Greenbelt, Maryland The Orion Crew Module has a pressurized cabin of approximately 20 m3 in volume. There are a number of cold plates within the Crew Module for thermal management. An optical communication type of payload consists of electronics boxes and modems that dissipate a significant amount of heat during science operation. Generally, such payloads operate for a short term (e.g., up to one hour). If these heat-dissipating components are flown inside the Crew Module, they require heat rejection to the cold plates in the Crew Module. The waste heat is transported from the cold plate to thermal radiators located outside the Orion spacecraft. This makes such a payload thermally dependent on the Crew Module cold plates.

Posted in: Briefs, TSP, Materials, Hydrocarbons, Passenger compartments, Thermal management, Spacecraft


Aerogel-Filled Foam Core Insulation for Cryogenic Propellant Storage

Advanced cryogenic insulation has applications in energy, medicine, food storage and packaging, and electronics. Marshall Space Flight Center, Alabama Current cryogenic insulation materials suffer from various drawbacks including high cost and weight, lack of structural or load-bearing capability, fabrication complexity, and property anisotropy. A need clearly exists for lightweight thermal insulation that is isotropic and structurally capable with high thermal performance, while also offering reduced fabrication and installation complexity, and lower cost.

Posted in: Briefs, Materials, Propellants, Thermal management, Storage, Foams, Insulation


Multifunctional B/C Fiber Composites for Radiation Shielding

Marshall Space Flight Center, Alabama A versatile, novel, multifunctional hybrid structural composite of a high-hydrogen epoxy matrix (UN-10) coupled with boron and carbon fibers (IM-7) has been developed. Prototype laminates of 18×18 in. (≈46×46 cm), with the nominal areal density of 0.35 g/cm2, were fabricated in this effort. The hydrogen atoms in the epoxy will provide shielding strength against high-energy protons, electrons, and heavy ionic species, while the boron fibers that have a high neutron cross-section will help shield against neutrons and reduce the buildup of high-energy photons from secondary reactions. The carbon fibers will provide improved mechanical strength.

Posted in: Briefs, Materials, Composite materials, Fibers


Smart MMOD Thermal Blanket

A spacer is added to standard thermal blankets to improve MMOD shielding. Lyndon B. Johnson Space Center, Houston, Texas This innovation provides for significantly improved protection from micrometeoroid and orbital debris (MMOD) particles, and reliably determines the location, depth, and extent of MMOD impact damage.

Posted in: Briefs, TSP, Materials, Fabrics, Fibers, Foams, Protective equipment, Spacecraft


Using Black Polyimide/Kevlar as a Metering Structure Multi-Layer Insulation (MLI)

This is used as an inner cover for minimizing stray light and providing micrometeoroid protection. Goddard Space Flight Center, Greenbelt, Maryland Metering structures of remote sensing instruments often have large openings or access holes. Shear panels that are X-shaped, such as those proposed for the Neutron Star Interior Composition Explorer (NICER), generally consist of C-channels and L-brackets to minimize structural distortion. This type of metering structure has large openings on the sides. Structural panels that have large access holes, such as those studied for the Landsat Operational Land Imager (OLI), generally consist of aluminum honeycomb panels with composite facesheets. Both types of metering structure require multilayer insulation (MLI) blankets to shield the internal components such as optics from sunlight and Earth albedo, and to minimize heat loss to 3K space by radiation. The issues of conventional MLI blankets for these metering structures include MLI sagging, stray light, and risk of micrometeoroid damage to optics.

Posted in: Briefs, TSP, Materials, Fibers, Insulation, Polymers, Protective structures


Best Practices for Creating Strong Bonds using UV LED Curing & Plasma Treatment

Join UV curing experts OmniCure by Excelitas Technologies and the plasma treating pros from Enercon for an insightful webinar on the best practices when using curable coatings, inks and adhesives.

Posted in: Webinars, On-Demand Webinars, LEDs, Coatings & Adhesives


Advanced Corrosion/Erosion Resistant Coatings: The ANCER™ is Here

Advanced Cooling Technologies (ACT) has developed a vapor deposited ANCER™ (Applied Nanoscale Corrosion Erosion Resistant) coating which has shown to provide superior protection of copper Micro Channel Coolers (MCCs) from catastrophic erosion/corrosion failure while cooling laser diodes.

Posted in: On-Demand Webinars, Coatings & Adhesives


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