Mechanical & Fluid Systems

Warming Up to Cold Forming: An Alternative to Precision Machining?

Designing and manufacturing complex, precision parts can be difficult and costly. Often, Engineers default to traditional machining when designing precision metal parts, but are there other methods that are better suited? Find out if cold forming is the right manufacturing capability for your next project in this 30-minute high-level introduction.

Posted in: On-Demand Webinars, Mechanical Components
Read More >>

Omni Jaw 5™ Powered Protrusion Cutter

With an interchangeable jaw, the tool can be used as a bolt cutter, punch, or shear.

In many manufacturing and construction activities, it is frequently necessary to remove a protrusion of material from a component or from a substrate surface. These removal operations include clipping the head off a bolt, or removing a nut, rivet, weld bead, or temporary assembly alignment tab from a substrate surface of assembled components. These operations may be required during normal assembly, during demolition of equipment or facilities, or during product repair or manufacturing rework activities.

Posted in: Briefs, Mechanical Components, Maintenance, Repair and Service Operations, Maintenance, repair, and service operations, Tools and equipment, Assembling, Cutting
Read More >>

Water-Saving Firefighting Nozzle

This nozzle extinguishes fires faster and with far less water than existing systems.

Fluorocarbon-based fire extinguishing agents are environmentally harmful since they cause depletion of the Earth's ozone layer. Fine Water Mist (FWM)-type systems have very favorable characteristics as replacements for existing Halon systems. Typically, these systems include nozzles for creating misting fluids using pressurized gas, and continue to show favor as a mechanism for fire prevention. In these systems, a liquid is typically directed into a central bore of the nozzle, which directs a flow of high-velocity gas. In some nozzles, the velocity and pressure of the gas are increased in a narrowed throat area of the bore, causing the atomization of the fluid into small droplets as the gas travels through the nozzle.

Posted in: Briefs, Mechanical Components
Read More >>

Sandia Cooler

Applications include laptops and other electronic devices, automotive, appliances, and any device comprising one or more forced-air exchangers.

Heat exchangers are used for the transfer of heat between two or more media. The media may be separated by a solid wall so that they never mix, or they may be in direct contact. Heat exchangers may be used in HVAC systems, power plants, and mechanical devices and systems that require heat transfer. Examples of systems where heat dissipation would be desirable are various electromechanical systems, and electronics applications such as conventional computing systems. In a typical computing system that includes a CPU, one or more memory devices, and other circuitry, cooling of the CPU in particular may be an important design consideration.

Posted in: Briefs, Mechanical Components
Read More >>

Ruck Dock Load Carriage Connector System

This device is used by civilians and military personnel who wear heavy backpacks, such as campers, rangers, firefighters, hikers, and soldiers.

Soldiers, civilians engaged in activities such as hiking, and public safety personnel engaged in search and rescue missions all require reliable systems for the effective carriage of necessary equipment. The most simplistic backpacks and rucksacks often do not incorporate a frame or other rigid load-distribution structure. Such frameless packs are suitable only for relatively light loads, as the bulk of the weight is transferred solely at two points: the shoulders of the user. Additionally, without auxiliary mounting points, the frameless backpack is subject to significant bouncing or swaying as the user runs or jumps.

Posted in: Briefs, Mechanical Components
Read More >>

Reducing Inaccuracies in Force/Haptic Feedback Systems

This novel algorithm automatically compensates for the errors introduced by physical factors, enabling the control system to adjust the applied force accurately.

Researchers at NASA's Armstrong Flight Research Center have developed a new technology to reduce inaccuracies in force/haptic feedback devices and systems. Used at NASA in aircraft simulations for force feedback pilot controls, these systems involve a servomotor applying precise force to a specific point based on very accurate measurements. However, because the force instrumentation often cannot be placed directly at the point of interest, a mechanical assembly is used, linking the force transducer to the target point. Unfortunately, this mechanical assembly introduces inaccuracies due to its own forces of gravity, friction, and inertia.

Posted in: Briefs, Mechanical Components, Computer simulation, Flight control systems, Flight control systems, Reliability, Reliability
Read More >>

Electromagnetic Actuator Decouples Linear and Rotary Motions

A lightweight module for rapid, accurate, and versatile positioning of semiconductor chips features a novel electromechanical actuator that can move objects both linearly and rotationally. The technology was developed by researchers at the A*STAR Singapore Institute of Manufacturing Technology (A*STAR SIMTech) and National University of Singapore (SIMTech-NUS) Joint Lab.

Posted in: News, Industrial Controls & Automation, Manufacturing & Prototyping, Mechanical Components, Motion Control, Positioning Equipment
Read More >>

3D Printed Tensegrity Object Can Change Shape

A team of researchers from the Georgia Institute of Technology has developed a way to use 3D printers to create objects capable of shape change. The objects use tensegrity, a structural system of floating rods in compression and cables in continuous tension. The researchers fabricated the struts from shape memory polymers that unfold when heated. The technology could someday be used in applications ranging from space missions to biomedical devices.

Posted in: News, Manufacturing & Prototyping, Mechanical Components, Motion Control
Read More >>

Low-Pressure Plasma Cleaning of Aerospace Components Using Breathing/Compressed Air

A method for precision cleaning of aerospace components is needed that does not use hazardous or environmentally harmful commodities. Historically, precision cleaning methods have utilized solvents that have contributed to the depletion of the ozone layer or had high potential for contributing to global warming. Solvent cleaning produces large waste streams, and some solvents may be phased out in the future due to the environmental concerns.

Posted in: Briefs, Mechanical Components, Environmental technologies, Maintenance, Repair and Service Operations, Maintenance, repair, and service operations, Gases, Parts
Read More >>

Chain Drive Dust Conveyer

This method clears cutting fines from a sampling tool without the use of fluids.

The Mars 2020 coring drill will generate a significant amount of dust and debris (known as fines) due to the volume of milled material displaced by the corer's annulus. These cuttings must be removed to ensure that the drill does not jam. The typical method involves fluids, which may not work on Mars due to the atmospheric conditions.

Posted in: Briefs, Mechanical Components, Particulate matter (PM), Drilling, Mining vehicles and equipment, Spacecraft
Read More >>

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