Briefs: Mechanical & Fluid Systems
Variable-Aperture Reciprocating Reed Valve
NASA’s Marshall Space Flight Center engineers have developed a new reed valve for controlling fluid flow back and forth between two chambers. The VARR valve provides two-way flow that is proportional to flow demand. As the pressure gradient builds on one side, the reed valve responds by opening an...
Briefs: Robotics, Automation & Control
Passive, Integrated, Sublimator-Driven Coldplate
Spacecraft thermal control systems typically perform three key functions — heat acquisition, heat transport, and heat rejection — in addition to those of insulation, heat generation, and heat storage. In a typical pumped fluid-loop spacecraft thermal control system, heat is acquired from...
Briefs: Robotics, Automation & Control
Experiments in space can be expensive and infrequent, but Earth’s upper atmosphere is accessible via large scientific balloons, and can be used to address many of the same fundamental questions. Scientific balloons are made of a...
Briefs: Mechanical & Fluid Systems
Human operation in space over long time periods causes bone and muscle deterioration, so there is a need for countermeasures in the form of physical exercises consisting of working against controlled...
Briefs: Software
Data adaptive algorithms are the critically enabling technology for automatic collision avoidance system efforts at NASA’s Armstrong Flight Research Center. These Armstrong-developed algorithms provide...
Briefs: Software
Interactive Diagnostic Modeling Evaluator
NASA’s Ames Research Center has developed an interactive diagnostic modeling evaluator (i-DME) tool to aid in modeling for noise and lag in the data and debugging of system models when fault detection, isolation, and recovery results are incorrect. i-DME is designed to dramatically speed up the...
Briefs: Software
High-Fidelity 3D Electromagnetic (E&M) Propagation Modeling Tools
For a future potential radar sounder mission to small celestial bodies like comets and asteroids, it is important to understand the interaction between propagating waves and interior geophysical structures. In general, it is not easy to build a software model capable of handling...
Briefs: Test & Measurement
External Diagnostic Method to Detect Electrical Charging in Complex Ion Trapping Systems
Electron-ionized atom trapping technology is widely used in mass spectrometry and atomic clocks. The complexity of the trapping configuration operating in an ultra-high vacuum system is driven by demands for ultimate sensitivity, performance, and fundamental...
Briefs: Test & Measurement
Modules for Inspection, Qualification, and Verification of Pressure Vessels
After decades of composite over-wrapped pressure vessel (COPV) development, manufacturing variance is still high, and has necessitated higher safety factors and additional mass to be flown on spacecraft, reducing overall performance. When liners are used in COPVs, they...
Briefs: Test & Measurement
NASA’s Langley Research Center has developed a system to detect and locate atmospheric clear air turbulence (CAT) by means of a ground-based infrasonic array to serve as an early warning...
Briefs: Test & Measurement
Flight Test System for Accurately Predicting Flutter
Traditional methods of flight flutter testing analyze system parameters such as damping levels that vary with flight conditions to monitor aircraft stability. In the past, the actual flight envelope developed for aircraft operation was essentially determined only by flight testing. The edges...
Briefs: Test & Measurement
TestEVAL Software to Assist in Mechanical Testing
Typically, mechanical test data has been reviewed and processed using a combination of Excel, PDF Viewer, MATLAB, and other tools. TestEVAL provides a central tool for all these tools, and enhances their capability. Having been developed in Python, it is expendable and portable. It uses no...
Briefs: Test & Measurement
Technique to Measure Degradation of Submillimeter-Wave Spectrometer Response to Local Oscillator Phase Noise
High-resolution submillimeter-wave spectroscopy is based on the heterodyne principle, where the incident signal is down-converted to a low intermediate frequency (IF) by nonlinear mixing with a local oscillator (LO) signal. The IF...
Briefs: Electronics & Computers
Metal Oxide Vertical Graphene Hybrid Supercapacitors
NASA has developed a novel hybrid supercapacitor system utilizing vertical graphene as an electrode material grown directly on collector metals using a plasma enhanced chemical vapor de - position. Supercapacitors are an alternative to batteries for energy storage, offering high power density...
Briefs: Aerospace
System and Method for Aiding Pilot Preview, Rehearsal, Review, and Real-Time Visual Acquisition of Flight Mission Progress
NASA’s Langley Research Center has developed a synthetic 3D visualization flight display that presents flight data information in an intuitive way using 3D computer graphic capabilities. The flight crew can preview and...
Briefs: Aerospace
Innovators at NASA’s Johnson Space Center have developed a novel footpedal-operated system and device to control movement of an object in three-dimensional (3D) space. The system enables...
Briefs: Aerospace
The legacy SeaWinds scatterometer radar needed to be interfaced to the International Space Station (ISS) without any modifications. It had been designed to fly on the Adeos II spacecraft. An interface to...
Briefs: Energy
NASA’s Marshall Space Flight Center is developing a lightweight space-based solar power array with a high power-to-stowed-volume and weight ratio. The system provides power to small...
Briefs: Physical Sciences
Solid-State Ultracapacitor
NASA’s Marshall Space Flight Center has developed a solid-state ultracapacitor utilizing a novel nanocomposite dielectric material. The material’s design is based on the internal barrier layer capacitance (IBLC) concept, and it uses novel dielectric and metallic conductive ink formulations.
Briefs: Energy
Chassis Short Mitigation and Characterization Technique for the Multi-Mission Radioisotope Thermoelectric Generator
The radioisotope thermoelectric generator (RTG) is a flight-proven, capable source of power that reliably converts heat into electricity. NASA and the Department of Energy (DoE) have developed a new generation of such power systems...
Briefs: Mechanical & Fluid Systems
Systems, Methods, and Apparatus of a Low-Conductance Silicon Micro-Leak for Mass Spectrometer Inlet
Mass spectrometers on atmospheric entry probes require a method for introducing gas from high-pressure ambient regions to the vacuum of the mass spectrometer interior.
Briefs: Mechanical & Fluid Systems
High-Heat-Flux-Capable Boundary Layer Vortex Generator and Boundary Layer Transition Device
Afixed geometry device has been developed to promote boundary layer transition and generation of streamwise vorticity, and is capable of withstanding entry heating environments for the Space Shuttle Orbiter. Designed to have a total height above the...
Briefs: Materials
Method for Exfoliation of Hexagonal Boron Nitride
NASA’s Langley Research Center has developed a method for exfoliating commercially available hexagonal Boron Nitride (hBN) into nanosheets a few atomic layers thick. Currently, hBN has limited use because it is insoluble with limited dispersibility, despite hBN having excellent thermal...
Briefs: Materials
NASA’s Langley Research Center has developed a method to consolidate carbon nanotube yarns and woven sheets and graphene sheets via the dehydration of sucrose. The resulting...
Briefs: Test & Measurement
Hermetic Seal Leak Detection Apparatus with Variable Size Test Chamber
NASA’s Marshall Space Flight Center has developed a unique apparatus ideal for use in nondestructive testing (NDT) of hermetic seals of containers or instrumentation. The device is capable of detecting both large and small leaks and can be calibrated to characterize the...
Briefs: Materials
NASA’s Langley Research Center has developed a technology that uses commercially available additive print manufacturing to add various levels of structural hierarchy to thin-film...
Briefs: Test & Measurement
Many present and future NASA missions require high-performance, large-scale cryogenic systems, such as the sunshields and cold instruments for the James Webb Space Telescope (JWST). Testing these systems is...
Briefs: Materials
Ultralow-Temperature-Operable Solid Propellant Binder
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...
Briefs: Test & Measurement
The suspension system of parachutes is typically made from ropes (referred to as cordage). Measuring loads in the suspension system cordage has thus far proven very...
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