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Lightweight, Flexible Thermal Protection System for Fire Protection
High-Precision Electric Gate for Time-of-Flight Ion Mass Spectrometers
Polyimide Wire Insulation Repair System
Distributed Propulsion Concepts and Superparamagnetic Energy Harvesting Hummingbird Engine
Aerofoam
Wet Active Chevron Nozzle for Controllable Jet Noise Reduction
Magnetic Relief Valve
Active Aircraft Pylon Noise Control System
Unmanned Aerial Systems Traffic Management
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RuO2 Thermometer for Ultra-Low Temperatures

A small, high-resolution, low-power thermometer has been developed for use in ultra-low temperatures that uses multiple RuO2 chip resistors. The use of commercially available thickfilm RuO2 chip resistors for measuring cryogenic temperatures is well known due to their low cost, long-term stability, and large resistance change.

Posted in: Briefs, Physical Sciences

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Ultra-Compact, High-Resolution LADAR System for 3D Imaging

An eye-safe LADAR system weighs under 500 grams and has range resolution of 1 mm at 10 m. This laser uses an adjustable, tiny microelectromechanical system (MEMS) mirror that was made in SiWave to sweep laser frequency. The size of the laser device is small (70×50×13 mm). The LADAR uses all the mature fiber-optic telecommunication technologies in the system, making this innovation an efficient performer. The tiny size and light weight makes the system useful for commercial and industrial applications including surface damage inspections, range measurements, and 3D imaging.

Posted in: Briefs, Physical Sciences

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Dual-Channel Multi-Purpose Telescope

A dual-channel telescope allows for a wide-field telescope design with a good, narrow field channel of fewer surfaces for shorter-wavelength or planet-finding applications. The design starts with a Korsch three-mirror-anastigmat (TMA) telescope that meets the mission criteria for image quality over a wide field of view. The internal image at the Cassegrain focus is typically blurry due to the aberration balancing among the three mirrors. The Cassegrain focus is then re-optimized on the axis of the system where the narrow field channel instrument is picked off by bending the primary mirror. This now makes the wide-field channel blurry (i.e., the TMA image), and it must be re-optimized while holding the fore-optics fixed. This leaves the tertiary mirror as a variable, as well as a fold mirror strategically placed at the image of the primary mirror (i.e., exit pupil of the telescope). This fold mirror can then be used to compensate for the departure in primary mirror figure used to optimize the narrow field channel. As such, only an aspheric term is needed for this final optimization on this “corrector” fold mirror.

Posted in: Briefs, Physical Sciences

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Algorithm for Computing Particle/Surface Interactions

An algorithm has been devised for predicting the behaviors of sparsely spatially distributed particles impinging on a solid surface in a rarefied atmosphere. Under the stated conditions, prior particle-transport models in which (1) dense distributions of particles are treated as continuum fluids; or (2) sparse distributions of particles are considered to be suspended in and to diffuse through fluid streams are not valid.

Posted in: Briefs, TSP, Information Sciences

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Safety and Quality Training Simulator

A portable system of electromechanical and electronic hardware and documentation has been developed as an automated means of instructing technicians in matters of safety and quality. The system enables elimination of most of the administrative tasks associated with traditional training. Customized, performance- based, hands-on training with integral testing is substituted for the traditional instructional approach of passive attendance in class followed by written examination.

Posted in: Briefs, TSP, Information Sciences

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Rover Slip Validation and Prediction Algorithm

A physical-based simulation has been developed for the Mars Exploration Rover (MER) mission that applies a slope-induced wheel-slippage to the rover location estimator. Using the digital elevation map from the stereo images, the computational method resolves the quasi-dynamic equations of motion that incorporate the actual wheel-terrain speed to estimate the gross velocity of the vehicle.

Posted in: Briefs, Information Sciences

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Supply-Chain Optimization Template

The Supply-Chain Optimization Tem - plate (SCOT) is an instructional guide for identifying, evaluating, and optimizing (including re-engineering) aerospace-oriented supply chains. The SCOT was derived from the Supply Chain Council’s Supply-Chain Operations Reference (SCC SCOR) Model, which is more generic and more oriented toward achieving a competitive advantage in business.

Posted in: Briefs, TSP, Information Sciences

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