Keyword: Tools and equipment

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) and (2) leads the users through the steps necessary to use a work time estimating technique to...

Briefs: Manufacturing & Prototyping

A common self-locking plastic wire tie has been modified (see figure) to enable the installer to snap off excess tie material after installation, without need for a cutting tool and without creating a potentially hazardous...

Briefs: Software
Program for Designing Multiple-Reflector Antenna Systems

Millimeter-Wave Optics Design Tool (MOD Tool) is a computer program for analyzing and designing multiple-reflector antenna systems that operate at microwave and millimeter wavelengths. MOD Tool is intended for use in conjunction with a computer-aided-design (CAD) program along with other...

Briefs: Manufacturing & Prototyping

The tool shown in the figure is a drill guide that can adapt to a curved or flat surface. The main function of the adaptable drill guide is to keep the axis of a drill perpendicular to the surface at the location of...

Briefs: Robotics, Automation & Control

The figure shows one aspect of the exterior appearance of a pistol-grip torque-measuring power tool. The tool is a self-contained, computer controlled, 3/8-in. (~9.5-mm) drive pistol-grip style tool....

Briefs: Information Technology
Software for Qualitative Flow-Path Modeling of Systems

A computer program called "the explicit global-modeling tool" implements a dynamic method of operation by which researchers can (1) determine global flow-path changes that occur during computational simulations of the behaviors of engineering systems; (2) analyze both normal and faulty...

Briefs: Materials

A microwave-heating technique has been developed for making a braze joint (1) between a tungsten carbide support and a surface layer of polycrystalline diamond or, alternatively,...

Briefs: Robotics, Automation & Control
Update on System for Robot-Assisted Microsurgery

Two reports present updated information on a robotic system that extends the dexterity of a microsurgeon. The system was described in two articles in NASA Tech Briefs, Vol. 21, No. 10 (October 1997); namely, "Telerobot Control for Microsurgery" (NPO-19823), on page 46 and "Force-Feedback Device...

Briefs: Robotics, Automation & Control

A swivel-head drill bit has been invented for use in acquiring a sample of a possibly hard material at a predetermined depth. This mechanism is a simpler and thus potentially cheaper alternative to deep-coring...

Briefs: Mechanical & Fluid Systems

Latching devices have been developed to provide electrical connections, secure mechanical and thermal connections, and optical alignment for mounting electronically controlled...

Briefs: Mechanical & Fluid Systems

Window assemblies (see figure) have been developed to satisfy special requirements pertaining to ease of replacement, alignment, sealing, and resistance to vibration in a spaceborne...

Briefs: Robotics, Automation & Control
Mars Lander

A brief report presents drawings for the conceptual design of a spacecraft that would land on Mars or another remote planet. The spacecraft would have a tetrahedral shape, would include airbags to cushion impact, and would have a self-righting capability. The drawings show the general appearance of the spacecraft and show the...

Briefs: Robotics, Automation & Control

A walking robot connected to external instrumentation via a tether has been proposed to enable visual inspections, retrieval of loose objects, and some repairs inside thin-wall round...

Briefs: Mechanical & Fluid Systems

The figure illustrates a device that flexes to allow rotation about a single axis through a total range of ±12°. This device was designed to offer the following advantages over commercial flexural pivots:

Briefs: Physical Sciences

A sonochemical treatment has been proposed for removing hydrazine contaminants from water. The basis of the proposal is a conjecture that the sonochemical effect in water containing...

Briefs: Mechanical & Fluid Systems
Automated Calibration of Torque Analyzers Without Weights

An automated apparatus calibrates digital torque analyzers that, in turn, are used to verify the accuracies of torque wrenches. The apparatus is located in a central laboratory, and the digital torque analyzers are brought to the laboratory for calibration. Previously, the torque...

Briefs: Manufacturing & Prototyping

A simple change in the design of tools used in manufacturing laminated-composite-material sandwich panels reduces the floor area needed to store the tools. To give meaning to a...

Briefs: Software
Software for Tooth-Contact Analysis of Spiral Bevel Gears

The SBGTAPER computer program implements a method for design and generation of spiral bevel gears that feature tapered teeth with localized bearing contact and a low level of transmission errors. The influence of misalignment on transmission errors and shift of bearing contact were...

Briefs: Mechanical & Fluid Systems

The figure presents a simplified view of a shaft seal that provides a small flow of neutral buffer gas to prevent contact between different gases contained in two adjacent regions along the shaft. In the original application,...

Briefs: Mechanical & Fluid Systems

There has been some success in continuing efforts to increase the service lifetimes of the guide rolls in hot-roll-slitter machines in the steel industry. In these machines, hardened knives are...