Briefs: Physical Sciences
Temperature Correction for Pressure-Sensitive Paint

A temperature correction has been developed to enable the extraction of pressure images and corresponding pressure data from images of photoluminescence of pressure-sensitive paints (PSPs). These...

Briefs: Electronics & Computers
Studies of Interaction Impedance in a TWT Helix

Two reports present further developments in the subject of "Computation of Characteristics of a Helical TWT Slow-Wave Circuit" (LEW-16571), NASA Tech Briefs, Vol. 22, No. 4 (April 1998), page 54....

Briefs: Physical Sciences
High-Temperature Pressure Sensors Made From Silicon Carbide

Pressure sensors that contain thin diaphragms made from the 6H polytype of silicon carbide (6H-SiC) have been developed. These are prototypes of pressure sensors for use at high...

Briefs: Electronics & Computers
Piezoelectric Igniter/Pressure-Sensor Devices

Piezoelectric devices that would serve as spark plugs, power generators for spark plugs, and/or pressure sensors have been proposed for use in internal-combustion engines. Unlike conventional spark...

Briefs: Electronics & Computers
Tunable HTS/Ferroelectric Microstrip Band-Pass Filters

Electrically tunable microstrip two-pole band-bass filters for a center frequency near 19 GHz and a 4-percent bandwidth have been designed, fabricated, and demonstrated to be functional. These...

Briefs: Materials
Reducing Methanol Crossover in CH3OH-Fuel-Cell Membranes

Improved polymer electrolyte membranes for direct methanol fuel cells can be made by impregnating the baseline membrane material with cross-linked polystyrene (a copolymer of styrene and...

Briefs: Mechanical & Fluid Systems
Inflatable Wing Leading Edges for High Lift and Deicing

Computational simulations and wind-tunnel tests have demonstrated the feasibility of using inflatable boots on the leading edges of airplane wings, both as devices to increase lift and as...

Briefs: Information Technology
Expert System To Develop Job Standards

The Job Standards Development System is a user-friendly expert system that (1) helps users select an appropriate work measurement methodology to develop job standards (or the less formal job time estimates)...

Briefs: Information Technology
Further Developments in Web Interactive Training

Three innovative computer programs for training and testing personnel at Kennedy Space Center have been developed under the aegis of the Web Interactive Training (WIT) project. The WIT project...

Briefs: Electronics & Computers
Using Narrow-Band Data Links in Locating Lightning Strikes

A method of preprocessing lightning-measurement waveforms has been devised to reduce the bandwidth needed to transmit data for computing the locations of lightning strikes. The method is...

Question of the Week
Would you use "Printed Wi-Fi?"

Technology Leaders