Briefs: Mechanical & Fluid Systems
High-Volume Airborne Fluids Handling Technologies To Fight Wildfires

NASA recently partnered with the U.S. Forest Service (USFS) on a project to examine mission suitability and recommend policies and procedures for the use of very large aerial firefighting aircraft such as the Boeing 747 and DC-10 aerial retardant delivery aircraft. The aircraft...

The development of more efficient thermoelectric couple technology capable of operating with high-grade heat sources up to 1,275 K is key to improving...

Briefs: Materials
Modeling of Alkane Oxidation Using Constituents and Species

It is currently not possible to perform simulations of turbulent reactive flows due in particular to complex chemistry, which may contain thousands of reactions and hundreds of species. This complex chemistry results in additional differential equations, making the numerical solution of...

Briefs: Materials
A Computer Model for Analyzing Volatile Removal Assembly

A computer model simulates reactional gas/liquid two-phase flow processes in porous media. A typical process is the oxygen/wastewater flow in the Volatile Removal Assembly (VRA) in the Closed Environment Life Support System (CELSS) installed in the International Space Station (ISS). The...

An axisymmetric full Navier-Stokes computational fluid dynamics (CFD) study was conducted to examine nozzle exhaust jet plume effects on the sonic boom signature of a supersonic...

Briefs: Physical Sciences
Handheld White Light Interferometer for Measuring Defect Depth in Windows

Accurate quantification of defects (scratches and impacts) is vital to the certification of flight hardware and other critical components. The amount of damage to a particular component contributes to the performance, reliability, and safety of a system, which ultimately...

Briefs: Information Technology
Decomposition Algorithm for Global Reachability on a Time-Varying Graph

A decomposition algorithm has been developed for global reachability analysis on a space-time grid. By exploiting the upper block-triangular structure, the planning problem is decomposed into smaller subproblems, which is much more scalable than the original approach.

Briefs: Information Technology
Autonomous GN&C for Spacecraft Exploration of Comets and Asteroids

A spacecraft guidance, navigation, and control (GN&C) system is needed to enable a spacecraft to descend to a surface, take a sample using a touch-and-go (TAG) sampling approach, and then safely ascend. At the time of this reporting, a flyable GN&C system that can...

Briefs: Information Technology
Efficient Web Services Policy Combination

Large-scale Web security systems usually involve cooperation between domains with non-identical policies. The network management and Web communication software used by the different organizations presents a stumbling block. Many of the tools used by the various divisions do not have the ability to...

Briefs: Information Technology
Using CTX Image Features to Predict HiRISE-Equivalent Rock Density

Methods have been developed to quantitatively assess rock hazards at candidate landing sites with the aid of images from the HiRISE camera onboard NASA’s Mars Reconnaissance Orbiter. HiRISE is able to resolve rocks as small as 1-m in diameter. Some sites of interest do not have...

Briefs: Information Technology
Inversion Method for Early Detection of ARES-1 Case Breach Failure

A document describes research into the problem of detecting a case breach formation at an early stage of a rocket flight. An inversion algorithm for case breach allocation is proposed and analyzed. It is shown how the case breach can be allocated at an early stage of its...

Briefs: Mechanical & Fluid Systems
Use of ILTV Control Laws for LaNCETS Flight Research

A report discusses the Lift and Nozzle Change Effects on Tail Shock (LaNCETS) test to investigate the effects of lift distribution and nozzle-area ratio changes on tail shock strength of an F-15 aircraft. Specific research objectives are to obtain in-flight shock strength for multiple...

Briefs: Information Technology
Evaluating Descent and Ascent Trajectories Near Non-Spherical Bodies

Spacecraft landing on small bodies pass through regions where conventional gravitation formulations using exterior spherical harmonics are inaccurate. An investigation shows that a formulation using interior solid spherical harmonics might be satisfactory. Interior spherical...

Briefs: Manufacturing & Prototyping
Process To Produce Iron Nanoparticle Lunar Dust Simulant Composite

A document discusses a method for producing nanophase iron lunar dust composite simulant by heating a mixture of carbon black and current lunar simulant types (mixed oxide including iron oxide) at a high temperature to reduce ionic iron into elemental iron. The product is a...

Dassault Systèmes SolidWorks Corp., Concord, MA, has introduced SolidWorks® 2011 3D design software that includes hundreds of improvements in design, simulation, and collaboration. New drawing...

Products: Electronics & Computers
12V Front-End Distributed Power Supply

Emerson Network Power (Carlsbad, CA) has introduced the DS2900, a high-wattage 12V front-end distributed power supply. The Emerson DS2900 is rated for up to 2900W of adjustable output power at 240A....

Products: Electronics & Computers
Replacement End-Of-Life Semiconductors

Rochester Electronics (Newburyport, MA) provides authorized reverse engineering services to recreate, manufacture and distribute pin-for-pin replacement parts with matched cycle for cycle timing for...

Products: Electronics & Computers
Universal Injection Transformer

OMICRON Lab’s (Houston, TX) new universal injection transformer, B-WIT 100, was developed for the stability analysis of switched mode power supplies and control loops of any kind. Due to its special design,...

Products: Electronics & Computers
PCB Design-Tool

Sunstone Circuits (Mulino, OR), the printed circuit board (PCB) prototype solutions provider, is launching the newest version of their design software, PCB123® v4. This free-to-use, no license required design-tool has an...

Products: Electronics & Computers
UPS With Long-Life Batteries

Falcon Electric, Inc. (Irwindale, CA) has introduced a long-life battery in its SSG Series™ Industrial-Grade Uninterruptible Power Systems (UPS) Plus product line. The units are available in models from 1.5 to...

Products: Electronics & Computers
DC Power Converter Module

Lineage Power Corporation (Plano, TX), a Gores Group company, has expanded its Picot LynxTM DC-DC converter family with a new 2-amp model that is an energy-efficient, non-isolated, point-of-load (POL) converter. The...

Briefs: Physical Sciences
Optical Sidebands Multiplier

Optical sidebands have been generated with relative frequency tens to hundreds of GHz by using optical sidebands that are generated in a cascade process in high-quality optical resonators with Kerr nonlinearity, such as whispering gallery mode (WGM) resonators. For this purpose, the WGM resonator needs to be...

Briefs: Photonics/Optics
Maximum Likelihood Time-of-Arrival Estimation of Optical Pulses via Photon-Counting Photodetectors

Many optical imaging, ranging, and communications systems rely on the estimation of the arrival time of an optical pulse. Recently, such systems have been increasingly employing photon-counting photodetector technology, which changes the statistics...

Briefs: Photonics/Optics
Single Spatial-Mode Room-Temperature-Operated 3.0 to 3.4 μm Diode Lasers

Compact, highly efficient, 3.0 to 3.4 μm light emitters are in demand for spectroscopic analysis and identification of chemical substances (including methane and formaldehyde), infrared countermeasures technologies, and development of advanced infrared scene projectors....

A portable instrument incorporates both mass spectrometry and dew point measurement to provide real-time, quantitative gas measurements of helium, nitrogen,...

Briefs: Physical Sciences
Self-Nulling Beam Combiner Using No External Phase Inverter

A self-nulling beam combiner is proposed that completely eliminates the phase inversion subsystem from the nulling interferometer, and instead uses the intrinsic phase shifts in the beam splitters. Simplifying the flight instrument in this way will be a valuable enhancement of mission...

Eddy-current displacement sensors
Lion Precision
St. Paul, MN

Stennis Space Center, NASA’s...

Application Briefs: Information Technology
NASA Satellite System Ground Segment to Receive Update
Ground system telecommunications architecture
General Dynamics C4 Systems
Falls Church, VA

As part of its seven-year contract with NASA...

Eye on Innovation: Manufacturing & Prototyping
Back to Edison, Back to Innovation

Somewhere during the last 100 years or so, we have lost something critical — something that funded and inspired the inventions that propelled us into modernism and delivered luxuries we now take for...

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