Keyword: Manufacturing processes

Briefs: Mechanical & Fluid Systems
Rocket Vent Design With Variable Flow Control and Rain Protection

This innovation is a rocket purge vent design that can control and balance flow across multiple vents and across very large gas flow ranges while keeping water or other undesirable gases from entering into the vented space. When changing purge rates, this device adapts to the...

Briefs: Mechanical & Fluid Systems

Machine vibration often originates with rotating driveline components such as rotors, gears, bearings, and fans. Such vibration is the source of unwanted noise and can be destructive to the machine. The vibration ring is a...

Briefs: Mechanical & Fluid Systems
Locomotion of Amorphous Surface Robots

The proposed techniques rely on three principal concepts: (1) controlling the polarity of electromagnets, (2) circulating fluid through a compartmentalized bladder, and (3) expanding and deflating polymers. These designs would allow amorphous robots to move across a surface without conventional wheels or...

Briefs: Mechanical & Fluid Systems
Fluid Disconnect Cooling Technique

The purpose of this innovation is to simulate the space temperature environment onto a fluid disconnect. This environment is to be maintained for a long period of time (48 hours) at a controlled temperature [6 ±2 °F(≈–14.4 ±1.1 °C)] to determine if temperature is causing leakage through the...

Briefs: Medical

The innovation consists of a method for fabricating containers (“biocapsules”) made of biocompatible mesh for holding living cells and...

Articles: Photonics/Optics

Efficient and accurate operations are vital to the success of today’s manufacturer. Newcomb Spring, a manufacturer of custom springs, wire forms and stampings, is continually working...

Application Briefs: Photonics/Optics

Manufacturing companies are placing increasing emphasis on data security throughout their operations to protect confidential data and to validate that their systems are protected against...

Briefs: Photonics/Optics
ELID Grinding of Large Aspheres

This work focused on a manufacturing process to produce silicon carbide optical surfaces with low mid-spatial surface errors. Mid-spatial frequency (MSF) and high-spatial frequency (HSF) surface errors in the grinding of fast aspheres are amplified in hard ceramics like silicon carbide due to cyclic tool wear...

Briefs: Mechanical & Fluid Systems

Equipment for space exploration is almost impossible to test on Earth. Testing is expensive and cannot replicate the conditions of launch, cruise, landing, and travel across a planetary surface....

Briefs: Information Technology
3D Finite Element Model of Magnetic Mirror and Nano Antenna

A 3D finite element mathematical model has been developed for representing a behavior of a magnetic mirror and nano antenna subject to polarized incident light. This model represents the fourth generation of magnetic mirror with the goal of suppressing the diffraction.

Briefs: Software

When the space shuttle’s external tank (ET) was being filled with the cryogenic fuel components LOX and LH2, moisture from the surrounding atmosphere could condense onto...

Articles: Lighting

LEDs are experiencing increasing acceptance and growth across many market segments. Part of this growth is due to new, higher-power LEDs that can be packaged in increasingly small areas. However, increased...

Briefs: Lighting

A team of researchers has demonstrated that atomic force microscope (AFM) probe tips made from its near-perfect gallium nitride nanowires are superior in many respects to standard silicon or...

Research News: Lighting

Researchers at the National Institute of Standards and Technology (NIST), working in collaboration with the Naval Research Laboratory, have found that a particular...

Briefs: Motion Control
Rotary Series Elastic Actuator

In order to perform human-like movement, an actuator is placed at each degree of freedom (DOF) in a humanoid robot. Additionally, these actuators must be packaged in an arrangement that approximates human structure and appearance. In this innovation, a rotary actuator assembly incorporates a brushless DC motor, a...

Application Briefs: Sensors/Data Acquisition
VERSALINE® Deep Silicon Etch™ System
Plasma-Therm
St. Petersburg, FL
727-577-4999
www.plasmatherm.com

NASA’s Jet Propulsion Laboratory...

Briefs: Mechanical & Fluid Systems
A Field-Reconfigurable Manipulator for Rovers

Robotic technologies will be deeply involved in any future human mission to the Moon. Prior to human arrival, robots will survey and explore the lunar surface, establish infrastructure, and assemble and test habitat modules. Once humans have arrived, the robots must be able to assist human...

Briefs: Manufacturing & Prototyping
Advanced Composite Thrust Chambers for In-Space Propulsion

Radiation-cooled, bipropellant thrust chambers are being used for in-space propulsion. To increase the performance of radiation-cooled engines, improved chamber materials are needed that will allow higher operating conditions (pressure and temperature), better resistance to oxidation,...

Briefs: Manufacturing & Prototyping
Integrally Woven Fiber Architecture for Composite Turbine Blades

Composite turbine blades are currently fabricated by laying up multiple layers of fibers in the form of either unidirectional prepregs or thin woven cloth. Composites formed in this manner have poor through-thickness strength. It is also difficult, if not impossible, to form...

Briefs: Manufacturing & Prototyping
Assembly and Packaging to Mass-Produce Carbon Nanotube Vacuum Microdevices and Circuits

Field-emission electron sources using carbon nanotubes (CNTs) are being targeted for low-power vacuum microelectronic applications for harsh-environment operation (high temperature, pressure, and corrosive atmosphere). While CNTs have demonstrated excellent...

Briefs: Materials
High-Efficiency, Easy-to-Manufacture Engineered Nanomaterials for Thermoelectric Applications

Stated generally, reducing the dimensionality of bulk-scale thermoelectric (TE) materials is theoretically and practically understood to be a viable route for maintaining/increasing phonon scattering, and maintaining/increasing electrical conductivity...

Briefs: Materials
Nanotechnology Approach to Lightweight, Multifunctional Polyethylene Composite Materials

Of several ideas being pursued by NASA for the reduction of radiation dosage to astronauts, the use of ultra-high-molecular-weight polyethylene (UHMWPE)-based composite materials for both radiation shielding and micrometeorite shielding appears to be...

Briefs: Materials
Electrostrictive Polymers

A new class of electroactive polymeric blend materials has been created that offers both sensing and actuation dual functionality. The blend is comprised of two components where one has sensing capability, and the other has actuating capability. These innovative materials provide significant field-induced strain, high...

Briefs: Electronics & Computers

The Highly Accelerated Life Testing (HALT) process subjects test articles to accelerated combined environments of thermal, dynamic, voltage, and current to find...

Briefs: Electronics & Computers
GaN Schottky Diode-Based Frequency Multiplier

State-of-the-art GaAs Schottky diode technology, which is being used for local oscillators (LOs) in heterodyne receivers and transmitters for radar applications, has limitations in terms of power-handling capabilities. That makes it difficult to generate necessary LO power to drive multi-pixel...

Briefs: Physical Sciences

There is a need to perform accurate, high-temperature, complex dielectric constant measurements at microwave frequencies on materials, such as those on the...

Application Briefs: Manufacturing & Prototyping
Embedded heat pipe assembly
Thermacore
Lancaster, PA
717-569-6551
www.thermacore.com

A Thermacore heat pipe assembly recently completed testing at the NASA Ames Arc...

Briefs: Imaging

Typically, the cost of a space observatory is driven by the size and mass of the primary aperture. Generally, a monolithic aperture is much heavier and...

Briefs: Electronics & Computers
Dynamic Response Determination of an Electronic Printed Circuit Board

Most of today’s automotive electronic systems are composed of two major mechanical elements: an equipment chassis or enclosure, and a printed circuit board (PCB) assembly. The PCB is composed of laminated copper and FR-4 glass epoxy. These systems often operate in severe...