Topics

Physical Sciences

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 : Test & Measurement
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 : Physical Sciences
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 : Physical Sciences
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 : Physical Sciences
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 : Physical Sciences
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 : Physical Sciences
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 : Physical Sciences
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 : Physical Sciences
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 : Physical Sciences
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...