Keyword: Engine mechanical components

Briefs: Mechanical & Fluid Systems

Thermally actuated hydraulic pumps have been proposed for diverse applications in which direct electrical or mechanical actuation is undesirable and the relative slowness of thermal actuation can be...

Briefs: Software
Flow Solver for Incompressible Rectangular Domains

This is an extension of the Flow Solver for Incompressible 2-D Drive Cavity software described in the preceding article. It solves the Navier- Stokes equations for incompressible flow using finite differencing on a uniform, staggered grid. There is a runtime choice of either central differencing...

Briefs: Mechanical & Fluid Systems

The balanced-piston relief valve with side vented reaction cavity has been proposed as an improved alternative to a conventional high- pressure, high-flow relief valve. As explained...

Briefs: Physical Sciences
Optical Pressure-Temperature Sensor for a Combustion Chamber

A compact sensor for measuring temperature and pressure in a combustion chamber has been proposed. Heretofore, independent measurements of high pressures and temperatures in combustion chambers have not been performed. In the original intended application, the combustion chamber would...

Briefs: Medical
Apparatus for Sampling Surface Contamination

An apparatus denoted a swab device has been developed as a convenient means of acquiring samples of contaminants from surfaces and suspending the samples in liquids. (Thereafter, the liquids can be dispensed, in controlled volumes, into scientific instruments for analysis of the contaminants.) The...

Briefs: Medical

The laboratory apparatus shown in the figure is a chamber for aerosol deposition of bioparticles on surfaces of test coupons. It is designed for primary use in inoculating both flat and...

Briefs: Manufacturing & Prototyping

A microfluidic system has been designed to survive spaceflight and to function autonomously on the Martian surface. It manipulates microscopic quantities of liquid water and...

Articles: Mechanical & Fluid Systems
Cargo Management System Jeremy Connell
Blacksburg, VA

Standard truck beds lack the ability to secure loose items easily. The Cargo Management System...

Articles: Medical

(Winner of an HP Workstation)

3D Ultrasonic Neuronavigation System for Image-Guided Brain Surgery Ajay Mahajan

Southern Illinois University...

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: Motion 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...

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...

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...

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: 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...

Application Briefs: Motion 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...

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...

Articles: Motion 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...

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: 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...

Briefs: Mechanical & Fluid Systems

A proposed electromechanical display system would be capable of presenting as many as six distinct messages. This system would be a more capable and more complex successor to the proposed...

Briefs: Photonics/Optics

It is now possible to fashion transparent crystalline materials into axisymmetric optical components having diameters ranging from hundreds down to tens of micrometers, whereas...

Application Briefs: Robotics, Automation & Control

At full power, the Spallation Neutron Source (SNS), part of Oak Ridge National Laboratory (ORNL, Oak Ridge, TN), will produce the world’s most intense pulsed...

Application Briefs: Motion Control

World cotton production in 2006/07 is forecast at 115.7 million bales, and global cotton consumption is forecast at a record of nearly 121 million bales, with 13.2 million acres...

Briefs: Physical Sciences
Improved High-Voltage Gas Isolator for Ion Thruster

A report describes an improved high-voltage isolator for preventing electrical discharge along the flow path of a propellant gas being fed from a supply at a spacecraft chassis electrical potential to an ion thruster at a potential as high as multiple kilovolts. The isolator must survive launch...

Briefs: Materials
Ceramic Paste for Patching High-Temperature Insulation

A ceramic paste that can be applied relatively easily, either by itself or in combination with one or more layer(s) of high temperature ceramic fabrics, such as silicon carbide or zirconia, has been invented as a means of patching cracks or holes in the reinforced carbon-carbon forward...