Topics

Physical Sciences

Briefs : Physical Sciences
Nanostructure Sensor Determines Presence and Concentration of a Target Molecule in Fluid

Several methods are presently being developed to sense the presence of a target molecule in small or modest concentration in a fluid. However, estimation of the concentration of the target molecule is unavailable where the fluid is substantially motionless...

Briefs : Sensors/Data Acquisition
Floating Ultrasonic Transducer Inspection System for Nondestructive Evaluation

This floating ultrasonic transducer inspection system is based on a “momentary touching” scheme wherein the ultrasonic transducer is in contact with the structure being scanned for a relatively short time while performing the measurement. A vibrating element is a...

Briefs : Sensors/Data Acquisition
Multiplexer for Multiple Sensors in a Vacuum Chamber

Vacuum chamber testing at large facilities can require hundreds of instruments, necessitating even more feedthroughs. The number of instruments and sensors that can be fed into a vacuum chamber is limited by the number of feedthrough ports dedicated to instrumentation. Thus high-pin-count,...

Briefs : Physical Sciences
Miniaturized Schottky Diode Sensors for Hydrogen and Hydrocarbon Detection at High Temperatures

A miniaturized Schottky diode hydrogen and hydrocarbon sensor with the structure of catalytic metal-metal oxide-silicon carbide (SiC) has been developed. The major innovation of this work is the use of the metal oxide, palladium oxide...

Briefs : Physical Sciences
Analog Ceramic Isolated Voltage Sensor

Galvanic isolated monitoring of voltages for launch vehicle, missiles, and space-deployed systems can be very challenging. Radiation exposure makes use of optics-based sensors difficult, as they can latch-up and become corrupted by the radiation environment; such devices can moreover be thermally...

Briefs : Physical Sciences
Flexible and Erectable Magnetic Field Response Sensors

The means to make a flexible and/or erectable magnetic field response sensor, a geometrically fixed capacitor mounting frame, a wireless dipstick, and an elastically flexible capacitor support have been developed. Either the capacitor mounting frame or the flexible, erectable magnetic field...

Briefs : Physical Sciences
Miniature Amperometric Solid Electrolyte Carbon Dioxide Sensor with Low Detection Limit

A miniaturized amperometric electro-chemical (solid electrolyte) carbon dioxide (CO2) sensor using a novel and robust sensor design has been developed and demonstrated. Semiconductor microfabrication techniques were used in the sensor fabrication,...

Briefs : Physical Sciences
Improved Light Injection and Detection Methods for fNIRS Headgear for Use in Avionics and Astronautics

Measuring hemoglobin concentration changes in the brain with functional near infrared spectroscopy (fNIRS) is a promising technique for monitoring cognitive state to optimize human performance during both aviation and space operations. The...

Briefs : Physical Sciences
A High-Cross-Polarization-Isolation, Multi-Frequency Antenna for Cloud and Precipitation Research

The Global Precipitation Mission (GPM) has an immediate need for a matched-beam Ku-band/Ka-band antenna system that can be used as a component of a ground validation radar. Retrieval techniques based on both polarization and differential absorption...

Briefs : Physical Sciences
External Magnetic Field Reduction Technique for Advanced Stirling Radioisotope Generator

Linear alternators coupled to Stirling power converters are promising candidates for high-efficiency heat-to-electricity power conversion in space. Presently, the external magnetic field emissions of such converters may exceed the allowed emission limits for...

Briefs : Physical Sciences
Advanced P-Band Spaceborne Radar System

Low-cost, flexible spaceborne radar architectures are needed to provide critical data for Earth and science applications. An instrument concept was developed for an advanced spaceborne radar system that can measure terrestrial biomass (woody mass per unit area), ecosystem structure (height and density),...

Briefs : Physical Sciences
Global Fire Detection Constellation

Wildfires that start in backcountry areas sometimes burn for hours before being detected and reported. Satellites offer a vantage point from which infrared sensors can detect fires. Individual satellites in low Earth orbit (LEO) offer infrequent overpasses, making the delay from ignition to detection...

Briefs : Physical Sciences
Compact Solid-State Entangled Photon Source

In the fields of quantum information, quantum optics, quantum cryptography, and quantum communications, there is a need to generate entangled photon pairs. The entangled photon pairs are described by an inseparable wave equation such that if a measurement is performed on one photon, its twin’s photon...

Briefs : Physical Sciences
Photogrammetric Recession Measurement

The testing of materials that ablate as a design function requires detailed time history of the ablation process. The rate at which the surface recedes during testing is a critically important measure of the performance of thermal protection system (TPS) materials like heat shields for aerospace vehicles....

Briefs : Test & Measurement
Tissue-Equivalent Radiation Dosimeteron-a-Chip with Plastic Scintillation Material

The complexity of spaceflight design requires reliable, fault-tolerant equipment capable of providing real-time dosimetry during a mission, which is not feasible with existing thermoluminescent dosimeter (TLD) technology. Real-time monitoring is important for...

Briefs : Test & Measurement
Measurement of Cryogenic Fluid Level with Laser Propagation and Surface Floor Reflection

The risks associated with introducing new hardware and methods into an operational environment have in part prohibited cryogen level measurement technology from advancing. In prior art, measurements have been made with invasive probes immersed in the...

Briefs : Test & Measurement
Video Acuity Measurement System

There is a widely acknowledged need for metrics to quantify the performance of video systems. Existing metrics are either difficult to measure or are largely theoretical. They do not reflect the full range of effects to which video may be subject, or do not relate easily to video performance in real-world tasks....

Briefs : Physical Sciences
Heat-Flow Probe Design and Development

The lunar regolith exhibits extremely low conductivity. Penetrating the regolith presents problems if the geo-technical properties of the regolith are not well understood and accounted for.

Briefs : Photonics/Optics
Solar Pumped Fiber Laser for Solar Sail Propulsion and Remote Power Transfer

A new method has been developed to create coherent laser light efficiently with direct optical coupling of the Sun’s energy into the gain medium for multiple uses. New advances in solar cell photovoltaic (PV) technologies have greatly improved their efficiencies,...

Briefs : Software
Designing Smaller Magnets for the Large Hadron Collider

The European Organization for Nuclear Research (CERN) requires new magnets that are smaller than their predecessors to accommodate new instrumentation. Because of their size, these magnets need to generate a 24 percent stronger magnetic field and the structure must provide for near-zero...

Briefs : Software
Electrical Calibration Source for Next-Generation Oscilloscope

Keysight Technologies (formerly Agilent Technologies) develops world-leading equipment for solving tough measurement challenges. The company’s Infiniium 90000 Q-Series oscilloscope is the first to reach the 60 GHz barrier, enabling engineers to make measurements on a new generation...

Briefs : Software
Integrated Space Weather Analysis System (iSWA)

The iSWA system is a Web-based dissemination framework for NASA-relevant space weather information that combines forecasts based on the most advanced space weather models with concurrent space environment information. A key design driver for the iSWA system is to generate and present vast amounts...

Briefs : Software
Automatic Localization of MSL Rover Mosaics in HiRISE Imagery

Mars Science Laboratory (MSL) surface operations require precise and accurate knowledge of rover position. A key means of establishing/verifying position is to match ortho-rectified mosaics from the MSL onboard cameras to orbital data. Manual localization by matching mosaics to HiRISE...

Briefs : Physical Sciences
SAM/MSL Terrestrial Background Spectral Library

The SAM/MSL Terrestrial Background Spectral Library is one of the tools developed for identifying known terrestrial background for the Mars Science Laboratory (MSL) Sample Analysis at Mars (SAM) mission. The SAM instrument suite can detect trace elements in the ppb range and therefore requires a...

Briefs : Software
Efficient Spectral Endmember Detection Onboard Spacecraft

Spaceflight and planetary exploration place severe constraints on the available bandwidth for downlinking large hyperspectral images. Communications with spacecraft often occur intermittently, so mission-relevant hyperspectral data must wait for analysis on the ground before it can inform...

Briefs : Software
Ray Tracing Model and Software for a Focused IR Lamp Heating System

When the space shuttle’s external tank (ET) was being filled with the cryogenic fuel components LOX and LH2, moisture from the surrounding atmosphere could condense onto the ET’s sprayed-on foam insulation (SOFI). This condensation could drip onto components, such as the LOX...

Briefs : Software
Using the Web Sockets Full-Duplex Communication Channel to Display Real-Time Sensor Data via Standard Web Browser

Web Sockets is a network full-duplex communication channel that allows Javascript programs embedded in Web pages to establish connections to applications running on the server that provided the Web pages. Two-way communication is...

Briefs : Software
Earth Now Mobile Phone App

A mobile device application created by NASA visualizes recent global climate data from Earth science satellites, including air temperature, sea surface salinity, carbon monoxide, ozone, and water vapor, as well as gravity and sea level variations. This app is an Open GL simple 3D object viewer for the Apple IOS and...

Briefs : Physical Sciences
PACIFIC: Process Algebra Capture of Intent from Information Content

Mixed-initiative teams of robots and humans working side-by-side in close proximity to each other need to be capable of reasoning about the actions and activities of each other within a mission context. This capability requires the robotic agents to have a sense of self, and...

Briefs : Software
Analytical Expression of Elevation-Dependent Relative Air Mass for Atmospheric Extinction Simulations

This software enables one to calculate elevation-dependent relative air mass. When imaging a setting or rising Sun on the ground or from space, the shape and the intensity distribution of a captured image are affected by the following three...

Webcasts

Upcoming Webinars: Robotics, Automation & Control

Using Portable Scenarios and Coverage Metrics to Ensure...

Upcoming Webinars: Robotics, Automation & Control

Impact of Autonomous and Electric Vehicles in New Product...

Upcoming Webinars: Sensors/Data Acquisition

Autonomous Vehicles Sensors: How to Ensure They Work Well and...

Upcoming Webinars: Automotive

Connectivity Solutions for Robust Data Transmission in Future...

Upcoming Webinars: Transportation

Transforming the Grid: New Technologies for the Transmission and...

Upcoming Webinars: Robotics, Automation & Control

Military Robotics