Special Coverage

Transducer-Actuator Systems for On-Machine Measurements and Automatic Part Alignment
Wide-Area Surveillance Using HD LWIR Uncooled Sensors
Heavy Lift Wing in Ground (WIG) Cargo Flying Boat
Technique Provides Security for Multi-Robot Systems
Bringing New Vision to Laser Material Processing Systems
NASA Tests Lasers’ Ability to Transmit Data from Space
Converting from Hydraulic Cylinders to Electric Actuators
Automating Optimization and Design Tasks Across Disciplines
Vibration Tables Shake Up Aerospace and Car Testing
Supercomputer Cooling System Uses Refrigerant to Replace Water

Range Imaging Without Moving Parts

Potential applications include proximity detection, robotic vision, and terrain mapping.

Range-imaging instruments of a type now under development are intended to generate the equivalent of three-dimensional images from measurements of the round-trip times of flight of laser pulses along known directions. These instruments could also provide information on characteristics of targets, including roughnesses and reflectivities of surfaces and optical densities of such semi-solid objects as trees and clouds. Unlike in prior range-imaging instruments based on times of flight along known directions, there would be no moving parts; aiming of the laser beams along the known directions would not be accomplished by mechanical scanning of mirrors, prisms, or other optical components. Instead, aiming would be accomplished by using solid-state devices to switch input and output beams along different fiber-optic paths. Because of the lack of moving parts, these instruments could be extraordinarily reliable, rugged, and long-lasting.

Posted in: Briefs, TSP, Physical Sciences, Architecture, Imaging, Imaging and visualization, Optics, Architecture, Imaging, Imaging and visualization, Optics
Read More >>

Flowmeters Are Not All Alike

When it comes to choosing a flowmetering device, some users assume “one size fits all.” In reality, there are significant differences between flowmeter types, and each design has its unique “pros and cons.” The basis of proper meter selection is a general awareness of flow measurement science — and a clear understanding of your specific application requirements.

Posted in: Articles, Motion Control, Measurements, Gases, Test equipment and instrumentation
Read More >>

Mechanical Carbon Machine Parts Ease Liquid Handling

For over a hundred years, machine parts composed of mechanical carbon have provided an alternative solution in applications where temperature and atmosphere conditions prevent the use of oil-grease lubricants. Mechanical carbon materials containing graphite are relied on for their self-lubricating characteristics.

Posted in: Articles, Motion Control, Lubricants, Graphite, Materials properties
Read More >>

Computational Fluid Dynamics Aids Aerospace Apps

Just a few years ago, the use of computational fluid dynamics (CFD) in most aerospace companies was restricted to pure research or troubleshooting problems with existing designs. But in the past few years, newly available CFD tools are fully embedded in the mainstream mechanical design environment and hence much easier, faster and less expensive to use.

Posted in: Application Briefs, Aerospace, Fluid Handling, Aircraft structures, Computational fluid dynamics, Design processes, Systems engineering
Read More >>

Thin Motor

The MigaOne™ motor from Miga Motor Company (Berkeley, CA) is a powerful but lightweight linear actuator built directly onto a PCB substrate. Now being adapted for use by NASA and Boeing, the wafer-thin motor is smaller than a credit card, measuring less than 0.1in. The motor eliminates bulky gears and leadscrews and occupies less than 10% the weight and volume of a comparable motor or solenoid.

Posted in: Products
Read More >>

Heavy-Duty Slide

The HepcoMotion HDS2 from Bishop-Wisecarver (Pittsburg, CA), offers system capacities up to 68kN, and adds new bearing sizes including a 150mm diameter vee bearing and a 144mm diameter taper roller bearing. Maximum single bearing capacity is 50kN, compared to 20kN previously. Low friction cap wipers expel dirt and debris, and provide continuous lubrication for long service life. A removable cover allows easy system adjustment without disassembly.

Posted in: Products
Read More >>

Hose Products Quick Reference Guide

Parker Hannifin Corp. (Wickliffe, OH) has released a new Hose products Division Quick Reference Guide (Bulletin 4400-B13) describing the division’s hydraulic, Push-Lok®, suction and return, transportation and refrigerant hose products. Now available from Parker’s Hose Products Division and new to the Quick Reference Guide are 451TC and 471TC Twin Tough braided hydraulic hoses that eliminate the labor and material costs required to manually bundle two separate hoses using tie straps or plastic sleeves. An expanded offering of F42 specialty hydraulic hose is also available, as is a new compressed air hose (CAH) for industrial air compressors.

Posted in: Products
Read More >>

Ball Valve

Hayward Flow Control Systems (Clemmons, NC, has announced a line of compact ball valves for a wide range of heavy duty chemical, water, and wastewater applications. The QVC and QTA series ball valves feature a rugged, all-plastic design usually found on higher cost ball valves, socket or threaded pipe connectors, Santoprene (TPV) seats, full porting, and a 150 PSI pressure rating. QVC Series valves are available in 1/2 to 4in. sizes in gray or white PVC, QTA Series valves are available in 1/2 to 2in. sizes in gray or white PVC, and include socket and threaded True Union end connections. The valves provide easy quarter-turn operation and are designed to fit into spaces too small for other valves.

Posted in: Products
Read More >>

Digital Pump Drives

The Masterflex L/S digital pump drive from Cole-Parmer (Vernon Hills, IL) has a high-contrast LCD graphical interface that eases setup and operation. The LCD shows four operating modes: continuous run, timed dispense, copy dispense, and volume dispense, allowing you to view pump performance continually. The menu-driven interface lets you select one of seven languages for programming and operation.

Posted in: Products
Read More >>

Positioning Drive

For space-restricted position and speed control applications, Baumer Ltd. (Southington, CT) has introduced a line of FlexiDrive positioning drives, which integrate absolute encoders with an assortment of motors, drives, gears and connectors. Offering 14-bit single-turn and 18-bit multi-turn resolution, Flexi-Drive systems deliver explicit and continuous position measurement even without power.

Posted in: Products
Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.