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Briefs Physical Sciences
Gesture-Directed Sensor-Information Fusion Gloves
Current chemical-protection gear for warfighters on the ground inhibits electronic communication via keyboards, cell phones, and remote-control devices. To improve communications capabilities...
Briefs Physical Sciences
GigE Advanced Imaging Sensor
The Wide-Field Dynamic Range (WFDR) camera is a high-sensitivity, wide-field-of-regard sensor of importance to future military surveillance and survivability systems. It is intended to be used in harsh, noisy...
Briefs Physical Sciences
Power for Micro Autonomous Systems
The Micro Autonomous Systems and Technology (MAST) Collaborative Technology Alliance (CTA) has been initiated to spur basic research in small autonomous robots, particularly in four main areas: Microsystem...
Briefs Physical Sciences
Indoor Navigation for Unmanned Aerial Vehicles
This research proposed the use of inexpensive, lightweight range sensors for indoor unmanned aerial vehicle (UAV) navigation. Two potential range sensors were tested for suitability and error...
Briefs Physical Sciences
Modular, Portable, and Reconfigurable Wireless Sensing System
A modular, portable, reconfigurable wireless sensor system monitors and records environmental conditions in an aircraft cabin. By designing a sensor system that can be easily...
Briefs Physical Sciences
Characterizing Turbulent Wind Flow Near a Wind Barrier Using Sonic Anemometers
The Holloman High Speed Test Track (HHSTT) facility at Holloman Air Force Base (HAFB), NM, has a test section of 1.8 km that contains an artificial rain field...
Briefs Physical Sciences
Frangible Polymer Circuit Acts as Tamper Sensor
Originally begun as an investigation to detect attempts to tap into an electrical cable, the emergence of modern encryption hardware rendered impractical attempts to protect communication media...
Briefs Physical Sciences
Advanced Lithium Ion Systems for Military Vehicles
The higher energy and power density of Li-Ion battery technology offers a significant reduction in the weight and volume for hybrid electric vehicle (HEV) battery systems compared to lead acid and nickel metal hydride technologies. Saft’s High Power Li-ion battery technology has demonstrated...
Briefs Physical Sciences
Reducing Thicknesses of PbZrₓTi₁₋ₓO₃ Films in Capacitors
A document describes experiments performed to determine effects of reducing the thicknesses of films of lead zirconate titanate (PbZrxTi1-xO3, wherein 0<x<1) used as ferroelectric dielectric layers in some capacitors. The fabrication of...
Briefs Physical Sciences
Detector Module for Testing Silicon Carbide Semiconductor Devices
Long-term stress testing of silicon carbide (SiC) semiconductor devices is required to determine suitability for power electronics applications. During testing, preventable...
Briefs Sensors/Data Acquisition
MEMS-Based Optical Limiter
Protecting optical sensors and detectors against excessive input signals is not only important for dealing with unintentional overloads, but also central for protecting sensors against intentional high-intensity...
Briefs Physical Sciences
Measurement of Transient Heat Flux and Surface Temperature Using Embedded Temperature Sensors
A report describes approximate solutions for surface temperature and heat flux for two embedded temperature sensors. The solutions were verified and the range of validity was established using several methods including comparisons with an exact...
Briefs Physical Sciences
Imaging and Spectral Measurements of Explosions
A document describes experiments performed to investigate rates of delivery of energy onto targets from different explosive formulations. The experiments were designed to measure relative positions of blast fireballs and leading shock fronts; determine whether different explosive formulations...
Briefs Sensors/Data Acquisition
Tightly Coupled INS, GPS, and Imaging Sensors for Precision Geolocation
To address the issue of poor georegistration performance for small unmanned aerial vehicles (UAVs), navigation and target-location accuracy improvements achievable by tightly integrating an image-based feature-tracking algorithm with Global Positioning System (GPS) and a...
Briefs Physical Sciences
Considerations of Aeroacoustics in Turbojet-Engine Testing
A study of the aeroacoustics of a turbojet-engine test cell has been performed as one step in the development of a computational aeroacoustics capability (CAA) that could provide...
Briefs Physical Sciences
Miniature Rotorcraft Flight Control Stabilization System
Autonomous rotorcraft provide improved capability in performing military missions such as reconnaissance, targeting, border patrol, and environmental sensing. A common difficulty in...
Briefs Physical Sciences
Studies of Dynamic Fracture in Brittle Materials
A program of research spanning several years ending in November 2005 was dedicated primarily to formulation and analysis of canonical boundary- value problems in mathematical modeling of dynamic fracture in brittle materials. The sub-topics within the broad topic of dynamic fracture in brittle...
Briefs Physical Sciences
Acceleration Strain Transducer Containing Cantilever Flaps
A recently invented acceleration strain transducer is based on the principle of a conventional spring-and-mass acceleration transducer combined with a linear strain sensor that...
Briefs Physical Sciences
Simulation of Airflow Through a Test Chamber
A computational-simulation study of the flow of air through a thermo-anemometer chamber was performed to resolve what originally seemed to be an anomaly in the measurement data obtained by use of...
Briefs Physical Sciences
Synthesizing Pseudo-Finer-Resolution MODIS Data Products
A document discusses a methodology for synthesizing finerresolution data products from outputs of the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments aboard NASA's Terra and Aqua satellites. Typical MODIS ocean color data have 1-km resolution, but those in five wavelength...
Briefs Sensors/Data Acquisition
Characterization of a MEMS Directional Sound Sensor
There is a wide range of potential military applications in which ambiguity in bearing occurs with respect to sound. For example, autonomous unmanned aerial vehicles (UAVs) could employ a...
Briefs Physical Sciences
Two-Camera Imaging System for Kinematic Measurements
A high-speed imaging system has been devised as a noninvasive means of collecting data on the kinematics of working models of developmental underwater or aerial vehicles that would utilize...
Briefs Physical Sciences
Advanced Concepts for Space Access
A paper summarizes commonly proposed advanced launch concepts, including both concepts that employ propellant and propellant-less concepts. A wide range of advanced launch concepts have been proposed in an effort to revolutionize space access through either a significant reduction in launch costs or significant...
Briefs Physical Sciences
Nanostructured Ferromagnetic-Wire/Insulator Composites
A research and development effort now in progress is focused on nano-structured ferromagnetic- wire/insulator composite materials to be used as the magnetic-core materials of sensors for...
Briefs Physical Sciences
Robot Vision System for Precise Object Retrieval in Unmanned Systems
Automating large-scale material handling systems that involve picking up or retrieving items via cranes or robot arms can yield big benefits, particularly in harsh or...
Briefs Physical Sciences
Thermal Technology System Acquires Heat Data to Count People
The Flowslide, developed by Royal Boon Edam Group Holding BV, is a combination of a revolving door and curved sliding panels, installed at Charles de Gaulle Airport, Paris. The...
Briefs Physical Sciences
Perspective on Research in Laser Propulsion
A document summarizes the history of research on laser propulsion, starting with the first publication of the laser-propulsion concept in the year 1969, proceeding through studies of laser propulsion within the broader context of advanced propulsion systems in general, and culminating in...
Briefs Physical Sciences
Time-Coding of Asynchronous Data Transmissions
A method for providing a time code for multiple streams of simultaneously received data has been developed in order to allow reconstruction of the data after asynchronous transfer. It is often...
Briefs Physical Sciences
Digital-Image Data Acquisition System for Turbulent Mixing and Combustion
An equipment and instrumentation system for high-speed digital image data acquisition and processing includes components for Planar Laser Induced Fluorescence (PLIF), flame-speed, and ignition and extinction measurements of laminar flames at variable pressure; tracking...
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