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Briefs: Software
Software for Displaying Coregistered Sets of Data
The DataSlate computer program is being developed to help educators and students gain access to, view, manipulate, and otherwise interact with sets of planetary and other scientific data via the Internet or via local data-storage facilities. DataSlate will be especially useful for displaying...
Briefs: Electronics & Computers
The Wireless Augmented Reality Prototype (WARP) is a system for personal access to a local area network with video, audio, and sensor data services. The center of the WARP system is a...
Briefs: Electronics & Computers
Multiple-quantum-well (MQW) AlxGa1-xAs/GaAs infrared photodetectors that are better suited [relative to prior AlxGa1-xAs/GaAs quantum-well infrared photodetectors (QWIPs)] for...
Briefs: Electronics & Computers
Airfield Wind Advisory Systems for General Aviation
An Airfield Wind Advisory System (AWAS) includes a self-contained weather station, located at an airfield, that measures speed and direction of the wind, the temperature, the barometric pressure, and the humidity. This ground station digitizes these measurements and transmits the measurement data...
Briefs: Software
Computing Radiation Fluxes, Power, and Temperature for TOPEX
A computer program performs a unified analysis of the radiation exposure, the temperatures, and the power generation and distribution for predicting the performance of the TOPEX satellite on orbit and during maneuvers. The unified analysis is needed because all aspects are...
Briefs: Software
Program for Updating Parameters of Thermal Models
Parameter Identification in Thermal Networks (PITN) is a computer program developed to satisfy a need to update parameters in mathematical models of thermal systems in order to make the temperatures computed by the models equal to the temperatures measured in tests of the corresponding real...
Briefs: Software
Program Tracks Operation of a Remote Solid-State Recorder
Solid State Recorder Pointer Tracker (SSRPT) is a computer program developed specifically to aid ground-based monitoring and control of two redundant solid-state recorders (SSRs) aboard the Cassini Spacecraft. The SSRs store telemetry data until downlink times, which are limited to a...
Briefs: Software
Library for Developing Spacecraft-Mission-Planning Software
The Platform Independent Software Components for the Exploration of Space (PISCES) software library provides for web-based, collaborative development of computer programs for planning trajectories and other trajectory-related aspects of spacecraft-mission design. The PISCES library...
Briefs: Mechanical & Fluid Systems
A lightweight, collapsible hyperbaric chamber/airlock system has been proposed as a portable unit for treating decompression sickness. Copies of the system could be stowed compactly and...
Briefs: Mechanical & Fluid Systems
A family of rugged, modular, reconfigurable, instrumented robotic vehicles has been proposed for use in exploration of the surfaces of Mars and other remote planets. These or similar vehicles could...
Briefs: Medical
Electrokinetically enhanced bioremediation (EEB) is a method of engineered bioremediation of soil contaminated by such organic compounds as solvents and petroleum products. As depicted...
Briefs: Medical
Microgravity Tissue Engineering
A continuing program of research and development focuses on engineering of functional cartilage and cardiac muscle for scientific research and for eventual use in transplants. The program involves the use of cells, polymer scaffolds, and bioreactor vessels. A polymer scaffold serves as a three-dimensional structure...
Briefs: Physical Sciences
Experiments have demonstrated the feasibility of using flame-heated refractory dielectric solid bodies as wavelength-selective sources of light for special applications; in...
Briefs: Electronics & Computers
Arrays of photon-counting detectors and associated digital signal processors have been proposed for receivers in optical communication systems in which the optical signals...
Briefs: Motion Control
Proposed packages called "remote engineering units" (REUs) would contain all the electronic circuitry needed to implement a subset of the design of the motor-control system of a robot....
Briefs: Photonics/Optics
Pyramid-Shape Light Coupler for Multi-Quantum-Well Photodetectors
Wavelength-independent light couplers in the form of planar arrays of pyramids have been proposed for use on multiple-quantum-well infrared photodetectors. Wavelength-independent light couplers are needed for focal-plane arrays of QWIPs designed to operate in multiple and/or broad...
Briefs: Motion Control
An improved radiator has been designed to provide inexpensive and highly reliable thermal control for an extravehicular mobility unit (EMU) [basically, a space suit equipped with a portable life-support system...
Briefs: Motion Control
Spin bearings have been invented as alternatives to such conventional rolling-element bearings as ball, spherical, needle, and roller bearings. Like a conventional bearing assembly, a spin-bearing assembly includes opposing...
Briefs: Photonics/Optics
A compact two-axis scanning-mirror assembly (see figure) has been developed for use as part of a laser rangefinder on a robotic vehicle. The assembly is designed to enable scanning of the laser beam...
Briefs: Photonics/Optics
Quantum-well infrared photodetectors (QWIPs) that include two-dimensional surface grating light couplers would be modified, according to a proposal to incorporate crossed slots. It...
Briefs: Physical Sciences
The term "optical nose" refers to a fiber-optic chemical sensor of a type that has been proposed to enable distributed measurement of the concentrations of volatile...
Briefs: Mechanical & Fluid Systems
A compact, low-power device measures pressure via the pressure-induced damping of oscillation of a small mechanical resonator. To achieve compactness and low mass — and thus low-power...
Briefs: Electronics & Computers
A low-power capacitive proximity sensor has been developed as a prototype of wheel-contact sensors for a small robotic vehicle. The sensor is integrated into a wheel and consists of only a few...
Briefs: Physical Sciences
A recently developed type of fiber-optic temperature sensor utilizes narrow-band near-infrared radiation emitted by rare-earth ions. These sensors are suitable for use in harsh environments at...
Briefs: Physical Sciences
Capacitive Sensor for Measuring Level of Liquid Nitrogen
The feasibility of a capacitive sensor for measuring the level of liquid nitrogen in a container has been demonstrated. The basic sensor design could also readily be adapted to measurement of the levels of cryogenic liquids other than nitrogen.
Briefs: Electronics & Computers
Black Jack GPS Receiver
The Black Jack (BJ) receiver is the revolutionary flight Global Positioning System (GPS) receiver developed by NASA to fill future needs for orbit-based GPS science. These range from a receiver to determine precise (1-cm radial accuracy goal for JASON-1) orbits, to missions using the GPS signals for remote sensing of the...
Briefs: Physical Sciences
Microelectromechanical sensors based on magnetoresistance have been proposed. Like other microelectromechanical sensors, these would be used to measure physical quantities that can be...
Briefs: Electronics & Computers
Digitally programmable analog membership-function circuits have been invented for use in fuzzy-logic systems. Heretofore, fuzzy membership functions have been implemented, variously, by...
Briefs: Electronics & Computers
Regenerative Pseudonoise Ranging
In a proposed improved technique for pseudonoise turnaround ranging of a radio transponder, the pseudonoise modulating signal would be regenerated in the transponder. The net result of the regeneration would be an increase in the effective return ranging power. This increase would provide some margin for decreasing...
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