Stories
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Briefs: Mechanical & Fluid Systems
Typical butterfly valves cannot seal at both ambient and cryogenic temperatures. At cryogenic temperatures, valves grow and shrink, changing critical dimensions such as distance between the disc and seat. Ideally,...
Application Briefs: Motion Control
The launch, landing, and overall mission of NASA’s Mars Science Laboratory (MSL) is arguably one of the most daring — and successful — space exploration endeavors ever...
Articles: Motion Control
Direct drive servo motor and drive technology has many advantages. It reduces an axis’ parts count, mechanical losses, and often its objectionable noise. What’s more, it also increases...
Briefs: Mechanical & Fluid Systems
Passive, Low-Insertion-Force/High-Retention-Force Cam Plug Design for Sample Tube Sample Caging
AMars “sample caching rover” mission designed to collect, document, and package samples for future collection and return to Earth was recommended as the highest-priority mission for 2013–2022 by the 2011 Planetary Decadal Survey. A key premise of...
Briefs: Imaging
Cameras for All-Sky Meteor Surveillance (CAMS) Version 1.3
The CAMS system comprises a deployment of multiple narrow-field, low-light video cameras that completely covers the sky in a mosaic pattern from 30° elevation and above. Two or three such camera batteries separated by many kilometers allow for large atmospheric volume coverage, high...
Articles: Robotics, Automation & Control
Fundamentally, a servo system can perform no more accurately than the accuracy of the feedback device controlling it. In addition, errors in speed or position can be introduced into the system by the...
Application Briefs: Robotics, Automation & Control
The manufacturing of pharmaceutical tablets is carried out using machines that appear, at first sight, to be very simple. First, a die is filled with the correct amount...
Application Briefs: Photonics/Optics
A wide range of commercial applications use cameras with a zooming mechanism. Perhaps the most ubiquitous is the camera phone. Camera phones may have an optical zoom, a digital...
Briefs: Mechanical & Fluid Systems
Sprag handle wrenches have been proposed for general applications in which conventional pawl-and-ratchet wrenches and sprag and cam “clickless” wrenches are now used. Sprag handle wrenches are so named because they...
Articles: Robotics, Automation & Control
As modern machines have become more advanced, the complexity involved in motion control has escalated. Today, servos have replaced cams and gears on machines and multiple axis of synchronized motion control have...
Briefs: Mechanical & Fluid Systems
Pasadena, California Special-purpose robot hands (end effectors) now under development are intended to enable robots to traverse cliffs much as human climbers do. Potential applications for robots...
Briefs: Mechanical & Fluid Systems
Mechanical Breakaway Clutch
A proposed mechanical breakaway clutch would not rely on friction. The clutch would be useful in environments in which the inherent inaccuracies of friction would make friction clutches erratic. The proposed clutch would comprise two primary assemblies: a driver assembly and a slip flange. The slip flange would be an...
Briefs: Mechanical & Fluid Systems
Space structures in general experience free-free vibrational boundary conditions that are not readily replicable on the ground. To conduct vibration tests of such structures on Earth,...
Briefs: Manufacturing & Prototyping
The linear motor was invented in the mid-nineteenth century, at much the same time as its brother, the rotating electric motor. Because the linear motor always has to effect a reversing movement -...
Briefs: Materials
Ion-beam-deposited surface layers of diamond-like carbon (DLC) on fine-grain chemical-vapor-deposited (CVD) diamond have been found to be effective in reducing friction and wear in a...
Top Stories
News: Power
Engineering the EL9: Electra's Ultra Short Hybrid-Electric Aircraft
Articles: Electronics & Computers
Generative AI Will Be the Next Evolution in Embedded Design
Podcasts: Design
A Donut-Shaped In-Wheel Motor for Military Electric Vehicles
Podcasts: Power
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INSIDER: Photonics/Optics
A Compact, Mid-Infrared Pulse Generator
Podcasts: Aerospace
Webcasts
On-Demand Webinars: Aerospace
Powering NewSpace Missions: Navigating the Cost vs. Reliability Challenge
Upcoming Webinars: Electronics & Computers
Solving Thermal Challenges in Defense: The Role of ECUs and...
Upcoming Webinars: Automotive
How Simulation Is Revolutionizing Automotive Design in the...
Upcoming Webinars: Energy
How to Overcome Mechanical Challenges in Lithium-Ion Batteries...
Upcoming Webinars: Electronics & Computers
Introduction to Requirements-Driven PCB Design
Upcoming Webinars: Software
Future-Proofing Automotive Software: Modularity, Reuse, and...
