Mechanical & Fluid Systems

Briefs : Mechanical & Fluid Systems
Plasma-Assisted Catalytic Reverse Water Gas Shift Reactor

For improving CO2 conversions for a low-temperature CO2 methanation process, a mechanism of using reverse water gas shift (RWGS) reaction as an intermediate step to generate the more reactive CO species for the methanation process was developed. The challenge was to...

Briefs : Mechanical & Fluid Systems
Folding-Tube Deployable Solar Array

Future space missions incorporating solar electric propulsion (SEP) will require large solar arrays that are an order of magnitude larger than the current state of the art for deployable arrays. This invention is a structural concept for such an array, and was designed to enable large arrays that package...

Briefs : Mechanical & Fluid Systems
Vented Launch Vehicle Adapter for a Manned Spacecraft With “Pusher” Launch Abort System

A Launch Vehicle Adapter (LVA) was developed that provides a structural interface between a Commercial Crew Vehicle (CCV) Crew Module/Service Module Spacecraft (CM/SM) and an expendable launch vehicle. It also provides a means to control the exhaust plume...

Briefs : Mechanical & Fluid Systems
Delayed Latching Mechanism

Uncontrolled and rapid movement of equipment and people through security gates has been a major problem for security personnel. In situations pertaining to facility security, it is desirable to delay the passage of...

Briefs : Mechanical & Fluid Systems
Multifunctional Hot Structure (HOST) Heat Shield

Traditional heat shield design isolates the functions of the thermal protection system (TPS) from the underlying load-carrying structure. This is due to the use of brittle TPS material that cannot carry the structural loads and that ablate during planetary entry. To isolate the TPS, the...

Briefs : Mechanical & Fluid Systems
Feed Mechanism and Method for Feeding Minute Components

Electrical circuits such as printed wiring boards or hybrid microcircuits designed to utilize surface mount electrical components are commonly assembled by computer-controlled automated...

Briefs : Mechanical & Fluid Systems
Vibration-Dampening Pedestal for MEMS

Microelectromechanical systems (MEMS) are critical devices for various highly sensitive applications; however, the development and potential fielding of these next-generation smart systems is currently impeded by the inability to satisfy the stringent performance standards for precision and control. These...

Briefs : Mechanical & Fluid Systems
Compact, Portable Device for Structural Vibration Reduction

Tuned mass dampers are used worldwide to mitigate vibrations in structures like buildings and bridges where excessive movement can be alarming or even sickening to occupants. The...

INSIDER : Mechanical & Fluid Systems
Origami Techniques Expand Compacted Spacecraft

Origami has once again inspired engineers at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California. Besides aesthetic beauty, the Japanese tradition of paper-folding addresses a persistent problem faced by JPL engineers: how do you pack the greatest amount of spacecraft into the smallest...

INSIDER : Photonics/Optics
Webb Telescope Actuators Move with Microscopic Accuracy

The James Webb Space Telescope will be the most powerful space telescope ever built. With a 21-foot diameter, the telescope’s primary mirror is six times larger than the one used by...

Articles : RF & Microwave Electronics
Self-Powered Wireless Sensors in the Industrial Internet of Things

Sensors have a key role in industrial production. For example, they can be used for quality and process monitoring or condition-based maintenance. The range of applications is large and is evolving even further, largely due to the increasing use of self-powered wireless sensors...

Briefs : Mechanical & Fluid Systems
Self-Regulating, Freezable Heat Exchanger for Spacecraft

Aspacecraft thermal control system must keep the vehicle, avionics, and atmosphere (if crewed) within a defined temperature range. Water coolant loops are typically used to transport heat to or from the cabin of a crewed spacecraft via heat exchangers to the heat sink systems that reject...

Briefs : Mechanical & Fluid Systems
Low-Power, Lightweight, Ultra-Compact Reverse Water Gas Shift Reactor

Utilizing CO2 to produce H2O and O2 is critical for sustained manned missions in space, and supports both NASA’s cabin Atmosphere Revitalization System (ARS) and ln-situ Resource Utilization (ISRU) concepts. For long-term missions beyond low...

Briefs : Mechanical & Fluid Systems
Inflatable Airlock Technologies

An airlock used in space can provide the ability to leave a pressurized volume and enter free space. This is necessary to perform maintenance or make repairs to the pressurized volume or visiting spacecraft, construct or repair structures or devices, tend in-space experiments, etc. The airlock is used to provide...

Briefs : Mechanical & Fluid Systems
Carbon Nanotube Purification

Development of carbon nanotubes (CNTs), including single-wall and multi-wall nanotubes and nanofibers, into useful devices requires fabrication of CNTs that are relatively free from process residues such as amorphous carbon and metallic particles that are not part of a CNT array grown on a (coated) substrate....

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