-1
8460
30
Briefs: Electronics & Computers
Improved accelerator and screen grids for an ion accelerator have been designed and tested in a continuing effort to increase the sustainable power and thrust at the high end of the...
Briefs: Software
User Interactive Software for Analysis of Human Physiological Data
Ambulatory physiological monitoring has been used to study human health and performance in space and in a variety of Earth-based environments (e.g., military aircraft, armored vehicles, small groups in isolation, and patients). Large, multi-channel data files are typically recorded...
Briefs: Mechanical & Fluid Systems
system for real-time detection of surface- fatigue-pitting damage to gears for use in a helicopter transmission is based on fuzzy-logic used to fuse data from sensors that measure...
Briefs: Software
Representation of Serendipitous Scientific Data
A computer program defines and implements an innovative kind of data structure than can be used for representing information derived from serendipitous discoveries made via collection of scientific data on long exploratory spacecraft missions. Data structures capable of collecting any kind of data can...
Briefs: Physical Sciences
Increasing the accuracy of storm-surge flood forecasts is essential for improving preparedness for hurricanes and other severe storms and, in particular, for optimizing...
Briefs: Software
Dynamically Alterable Arrays of Polymorphic Data Types
An application library package was developed that represents data packets for Deep Space Network (DSN) message packets as dynamically alterable arrays composed of arbitrary polymorphic data types. The software was to address a limitation of the present state of the practice for having an array...
Briefs: Software
Identifying Trends in Deep Space Network Monitor Data
A computer program has been developed that analyzes Deep Space Network monitor data, looking for changes of trends in critical parameters. This program represents a significant improvement over the previous practice of manually plotting data and visually inspecting the resulting graphs to...
Briefs: Software
Predicting Lifetime of a Thermomechanically Loaded Component
NASALIFE is a computer program for predicting the lifetime, as affected by low cycle fatigue (LCF) and creep rupture, of a structural component subject to temporally varying, multiaxial thermomechanical loads. The component could be, for example, part of an aircraft turbine engine....
Briefs: Software
Partial Automation of Requirements Tracing
Requirements Tracing on Target (RETRO) is software for after-the-fact tracing of textual requirements to support independent verification and validation of software. RETRO applies one of three user-selectable information-retrieval techniques: (1) term frequency/inverse document frequency (TF/IDF) vector...
Briefs: Software
Automated Synthesis of Architectures of Avionic Systems
The Architecture Synthesis Tool (AST) is software that automatically synthesizes software and hardware architectures of avionic systems. The AST is expected to be most helpful during initial formulation of an avionic-system design, when system requirements change frequently and manual...
Briefs: Software
SSRL Emergency Response Shore Tool
The SSRL Emergency Response Shore Tool (wherein “SSRL” signifies “Smart Systems Research Laboratory”) is a computer program within a system of communication and mobile-computing software and hardware being developed to increase the situational awareness of first responders at building collapses. This...
Briefs: Semiconductors & ICs
Theoretical analysis and some experiments have shown that the silicon-on-insulator (SOI) 4-gate transistors known as G4-FETs can be used as building blocks of four-quadrant analog voltage...
Briefs: Materials
Microscopic thermal-contact pads that include carpetlike arrays of carbon nanotubes have been invented for dissipating heat generated in integrated circuits and similarly sized single electronic...
Briefs: Test & Measurement
Simulator for Testing Spacecraft Separation Devices
A report describes the main features of a system for testing pyrotechnic and mechanical devices used to separate spacecraft and modules of spacecraft during flight. The system includes a spacecraft simulator [also denoted a large mobility base (LMB)] equipped with air thrusters, sensors, and...
Briefs: Test & Measurement
An apparatus for positioning and holding material specimens is a major subsystem of a system for impact testing of the specimens at temperatures up to 1,500 °C. This apparatus and the...
Briefs: Test & Measurement
The figure shows a compact, rugged, simple sensor head that is part of an instrumentation system for making measurements to characterize the severity of aircraft-icing conditions...
Briefs: Test & Measurement
A desk-sized apparatus for testing monoball bearings and their lubricants offers advantages, relative to prior such apparatuses, of (1) a greater degree of automation and (2) capability of...
Briefs: Test & Measurement
Advances in Measurement of Skin Friction in Airflow
The surface interferometric skin-friction (SISF) measurement system is an instrument for determining the distribution of surface shear stress (skin friction) on a wind-tunnel model. The SISF system utilizes the established oil-film interference method, along with advanced image-data-processing...
Briefs: Electronics & Computers
The figure shows an instrument incorporating an infrared camera for detecting small hydrogen fires. The instrument has been developed as an improved replacement for prior infrared and ultraviolet...
Briefs: Electronics & Computers
In a modified configuration of a coaxial probe feed for a layered printed-circuit antenna (e.g., a microstrip antenna), the outer conductor of the coaxial cable extends through the thickness of...
Briefs: Electronics & Computers
Because such wavelengths are comparable to the characteristic dimensions of terrain features associated with negative hazards, a significant amount of diffraction would occur at such features. In...
Briefs: Medical
Thermal spore exposure vessels (TSEVs) are laboratory containers designed for use in measuring rates of death or survival of microbial spores at elevated temperatures. A major consideration in the design of a TSEV...
Briefs: Medical
Enumerating Spore-Forming Bacteria Airborne With Particles
A laboratory method has been conceived to enable the enumeration of:
Cultivable bacteria and bacterial spores that are, variously, airborne by themselves or carried by, parts of, or otherwise associated with, other airborne particles; and
Spore-forming bacteria among all of the...
Briefs: Information Technology
A method of sequence detection has been proposed to mitigate the effects of inter-slot interference and inter-symbol interference (both denoted "ISI") in the reception of M-ary...
Briefs: Information Technology
An algorithm searches a star catalog to identify guide stars within the field of view of a telescope or camera. The algorithm is fast: the number of computations needed to perform the...
Briefs: Information Technology
Expectation-Based Control of Noise and Chaos
A proposed approach to control of noise and chaos in dynamic systems would supplement conventional methods. The approach is based on fictitious forces composed of expectations governed by Fokker-Planck or Liouville equations that describe the evolution of the probability densities of the controlled...
Briefs: Physical Sciences
Radio Heating of Lunar Soil To Release Gases
A report proposes the development of a system to collect volatile elements and compounds from Lunar soil for use in supporting habitation and processing into rocket fuel. Prior exploratory missions revealed that H2, He, and N2 are present in Lunar soil and there are some indications that water ice may...
Briefs: Physical Sciences
Using Electrostriction To Manipulate Ullage in Microgravity
A report proposes to use electrostriction to manipulate the ullage in a tank containing a dielectric liquid in a microgravitational environment. In the original intended application, the liquid would be a spacecraft propellant and the goal would be to force the ullage (comprising bubbles...
Briefs: Information Technology
Equations for Scoring Rules When Data Are Missing
A document presents equations for scoring rules in a diagnostic and/or prognostic artificial-intelligence software system of the rule-based inference- engine type. The equations define a set of metrics that characterize the evaluation of a rule when data required for the antecedence clause(s) of the...
Top Stories
Blog: Manufacturing & Prototyping
2025 Holiday Gift Guide for Engineers: Tech, Tools, and Gadgets
INSIDER: Research Lab
Scientists Create Superconducting Semiconductor Material
Blog: Software
Quiz: Materials
Blog: Aerospace
Tech Briefs Wrapped 2025: Top 10 Technology Stories
Blog: Manufacturing & Prototyping
Webcasts
Upcoming Webinars: AR/AI
The Real Impact of AR and AI in the Industrial Equipment Industry
Upcoming Webinars: Motion Control
Next-Generation Linear and Rotary Stages: When Ultra Precision...
Upcoming Webinars: Energy
Hydrogen Engines Are Heating Up for Heavy Duty
Podcasts: Medical
How Wearables Are Enhancing Smart Drug Delivery
Podcasts: Power
SAE Automotive Podcast: Solid-State Batteries
Podcasts: Power
