August 1, 2009 NASA Tech Briefs - August 2009 - Vol. 33 No. 8 Here are links to this issue's Features, Tech Briefs, Products and more. You can download the complete issue, LOGIN TO DOWNLOAD Don't have an account? Sign up here. Subscribe to future issues. SUBSCRIBE Inside this issue Supplements Features Eye on Innovation The Opportunity of Economic Uncertainty Application Briefs Assembly Machines Produce Optics for NASA’s NuSTAR Telescope CCD Imaging Sensors Aid Hubble in Exploring the Universe Who's Who Allen Parker, Systems Engineer, Advanced Structures and Measurement Group, Dryden Flight Research Center Articles Beyond the Box: A Software-Defined Approach to RF Testing Tech Briefs Physical Sciences A Technique for Adjusting Eigenfrequencies of WGM Resonators Low-Pressure, Field-Ionizing Mass Spectrometer Modifying Operating Cycles To Increase Stability in a LITS Chamber for Simulating Martian and Terrestrial Environments Manufacturing & Prototyping Inert Welding/Brazing Gas Filters and Dryers Fabricating Copper Nanotubes by Electrodeposition Improved Fabrication of Ceramic Matrix Composite/Foam Core Integrated Structures Materials Cyclic Oxidation Behavior of CuCrAl Cold-Sprayed Coatings for Reusable Launch Vehicles Ceramic Fiber Structures for Cryogenic Load-Bearing Applications Elastomer Reinforced With Carbon Nanotubes Improving Heat Flux Performance of Flat Surface in Spray-Cooling Systems Treating Fibrous Insulation To Reduce Thermal Conductivity Silica-Aerogel Composites Opacified With La0.7Sr0.3MnO3 Biologically Inspired Purification and Dispersion of SWCNTs Quantifying Airborne Hydrogen in Nearly Real Time Information Sciences Aligning a Receiving Antenna Array To Reduce Interference Algorithm for Detecting a Bright Spot in an Image Extreme Programming: Maestro Style Adaptive Behavior for Mobile Robots Protocol for Communication Networking for Formation Flying Planning Complex Sequences Using Compressed Representations Self-Supervised Learning of Terrain Traversability From Proprioceptive Sensors Mechanics & Machinery Collecting Ground Samples for Balloon-Borne Instruments Tethered Pyrotechnic Apparatus for Acquiring a Ground Sample Reducing Aerodynamic Drag on Empty Open Cargo Vehicles Rotary Percussive Auto-Gopher for Deep Drilling and Sampling Thermostatic Valves Containing Silicone-Oil Actuators More About Reconfigurable Exploratory Robotic Vehicles Semiconductors & ICs Efficient Multiplexer FPGA Block Structures Based on G⁴FETs VLSI Microsystem for Rapid Bioinformatic Pattern Recognition Low-Noise Amplifier for 100 to 180 GHz Electronics & Computers Enhanced Video-Oculography System Joint Carrier-Phase Synchronization and LDPC Decoding Dual-Polarization, Sideband-Separating, Balanced Receiver for 1.5 THz Modular Battery Charge Controller Products Ultra-Portable Data Acquisition System Motion Control Technology LOGIN TO DOWNLOAD Subscribe to future issues. SUBSCRIBE Products Piston Pump Heavy-Duty Slide Servo Coupling Pressure Control Valve Two-Way Valves Fluid Sensor Intelligent Actuator Linear Motor Stage Linear Stage Inductive Encoder Applications HAWE Hydraulic Valves Improve Maintenance for Conveyor Application Systems Spiralock Fasteners Safeguard Reliability for Medical Lasers and Implants Articles Introduction to Linear Actuators Fluid Handling Products Gain in Performance, Efficiency View the discussion thread.