Keyword: Engine components

Articles: Transportation
Internally Radiating Impulse Structure (IRIS) Engine Corban Tillemann-Dick
Tendix LLC
Denver, CO

The vast majority of internal combustion engines we...

Articles: Robotics, Automation & Control

Linear motors and actuators are now cost-competitive with ball screws and belt drives and offer distinctly superior agility and bandwidth for advanced positioning applications. New...

Articles: Automotive

Although it may not be obvious to the untrained eye, a number of technical innovations developed for aerospace and defense applications have found their way into the...

Articles: Robotics, Automation & Control

As modern machines have become more advanced, the complexity involved in motion control has escalated. Today, servos have replaced cams and gears on machines and multiple axis of synchronized motion control...

Articles: Robotics, Automation & Control

The trend in aircraft design is toward more efficient brushless DC motors. A integrated motor drive module for brushless DC motors from International Rectifier (El Segundo, CA) reduces the effort...

Briefs: Mechanical & Fluid Systems

A design concept for a beam for a specific application permits variations and options for satisfying competing requirements to minimize certain deflections under load and to minimize the...

Briefs: Physical Sciences

An improved thermal modulator has been invented for use in a variant of gas chromatography (GC). The variant in question — denoted as two-dimensional gas chromatography (2DGC) or GC-GC...

Articles: Electronics & Computers

The need for commercial off the shelf (COTS) single board computer (SBC) products continues to grow as higher processing, smaller footprints and lower power requirements become more critical....

Application Briefs: Photonics/Optics

Light beam homogenizer designs used for decades are largely based upon lenticular lens arrays that date back to the 1940s and 1950s. A more recent design is from the late 1980s that comprises a pair...

INSIDER: Electronics & Computers

Since their introduction in 1991, PC/104 standard based systems have been widely adopted in various applications. Unmanned aircraft control, onboard vehicle control and navigation...

Briefs: Mechanical & Fluid Systems
Multistage Passive Cooler for Spaceborne Instruments

A document describes a three-stage passive radiative cooler for a cryogenic spectrometer to be launched into a low orbit around the Moon. This cooler is relatively lightweight and compact, and its basic design is scalable and otherwise adaptable to other applications in which there are...

Briefs: Materials

Modeling software is generally used to show the fields and flows that are impossible to see with the eye or instruments. A group of researchers has done just the opposite:...

Briefs: Semiconductors & ICs

A method of fabricating flexible assemblies comprising flexible integrated circuits bonded onto or into flexible membranes has been developed. The method provides for bonding of thinned...

Briefs: Mechanical & Fluid Systems
Measuring Dynamic Transfer Functions of Cavitating Pumps

A water-flow test facility has been built to enable measurement of dynamic transfer functions (DTFs) of cavitating pumps and of inducers in such pumps. Originally, the facility was intended for use in an investigation of the effects of cavitation in a rocket-engine low-pressure oxygen...

Briefs: Medical
Advanced Resistive Exercise Device

The advanced resistive exercise device (ARED), now at the prototype stage of development, is a versatile machine that can be used to perform different customized exercises for which, heretofore, it has been necessary to use different machines. Conceived as a means of helping astronauts and others to maintain...

Briefs: Photonics/Optics

Theoretical and experimental investigations have demonstrated the feasibility of compact white-light sensor optics consisting of unitary combinations of (1) low-profile...

Briefs: Electronics & Computers

The upper part of the figure depicts an aperture-coupled L-band antenna comprising patterned metal conductor films supported on two thin polyimide membranes separated by an air gap. In this...

Briefs: Physical Sciences

An automated flying-insect detection system (AFIDS) was developed as a proof-of-concept instrument for real-time detection and identification of flying insects. This type of system has use in...

Briefs: Physical Sciences

The risk of premature failure of thermal barrier coatings (TBCs), typically composed of yttria-stabilized zirconia (YSZ), compromises the reliability of TBCs used to provide thermal protection...

Application Briefs: Robotics, Automation & Control

The Bugatti Veyron is the world’s fastest street-legal motor vehicle, a high-end passenger car that can reach speeds of more than 200 miles per hour. These high speeds...

Briefs: Medical

A proposed special-purpose infrared imaging system would be a compact, portable, less-expensive alternative to functional magnetic resonance imaging (fMRI) systems heretofore used to study...

Articles: Sensors/Data Acquisition

A team from Langley Research Center in Hampton, VA, has been awarded the 2006 NASA Government Invention of the Year for an actuator and sensor system that is more durable than a piezoelectric system,...

Briefs: Mechanical & Fluid Systems

An apparatus has been designed and built for testing the effects, on moderatesized objects, of cushioned decelerations having magnitudes ranging up to several hundred g [where g = normal Earth...

Briefs: Mechanical & Fluid Systems

A discussion of retaining rings inevitably must begin with a debunking of myths; namely, that one style of retaining ring will function better than all other types in all instances. No...

Articles: Robotics, Automation & Control

Robotic system designers should choose the right power source for the job. Often, electric motors are chosen without thinking about the benefits of hydraulics or...

Application Briefs: Motion Control

Scheduled for completion in 2009, the National Ignition Facility Project (NIF), part of Lawrence Livermore National Laboratory (LLNL, Livermore, CA), is a component of the...

Briefs: Electronics & Computers

A timing system comprising an electronic master clock and a subsystem for distributing time signals from the master clock to end users is undergoing development to satisfy anticipated timing...

Briefs: Materials

Thermally sprayed dielectric ceramic coatings are the primary means of attaching strain and temperature gauges to hot-section rotating parts of turbine engines. As hot-section temperatures...

Briefs: Physical Sciences
Resistively Heated SiC Nozzle for Generating Molecular Beams

An improved nozzle has been developed to replace nozzles used previously in an apparatus that generates a substantially unidirectional beam of molecules passing through a vacuum at speeds of several kilometers per second. The need to replace the previous nozzles arose from a complex...