Propulsion

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Briefs: Propulsion
Thruster-Based Attitude and Translation Control with Minimum Pulse-Count Disturbance Rejection
Thruster-based control typically requires a substantial engineering effort in order to mitigate an important issue: the control system tends to use many thruster pulses to accomplish what a single thruster pulse could do instead. This fundamental problem...
Briefs: Propulsion
The advent of cryocooler technology ushers in an era where a cryogenic environment is created and maintained locally. It is no longer necessary to transport cryogen from a factory where it is produced to the...
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Blog: Energy
Is the future electric? A reader asks an expert from Mercedes-Benz.
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Sound-Off: Automotive
Today's vehicles feature traditional internal combustion engines, hybrid, plugin, and electric drivetrains. A reader asks: "Which power-plant choice will take the lead in 2020?"
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INSIDER: Propulsion
Although maneuvering nanosatellites in space is a complex procedure, a new micro-propulsion method features the simplest of ingredients: water.
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Sound-Off: Propulsion
The fuel cell, an increasingly popular device in the automotive sector, creates a power source when coupled with hydrogen. The hydrogen can be made from natural gas or electrolysis of water...
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Articles: Motion Control
Couplings are a critical part of system performance in high-tech applications, yet they are often one of the last components to be specified. Selecting the proper coupling ensures the equipment will meet...
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Articles: Mechanical & Fluid Systems
Gears play an essential role in precision robotics, and they can become a limiting factor when the robots must perform in space missions. In particular, the extreme temperatures of deep space pose...
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Articles: Mechanical & Fluid Systems
NASA Technology Rocket launches—or earthquakes—are already punishing experiences. But it turns out there are some things that can make them worse: like if the vibrations hit the structure...
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INSIDER: Robotics, Automation & Control
Inspecting the condition of dikes and other sea defense structures is typically a task for robots, working in a team and in a highly autonomous way. But if they move around across the dikes,...
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INSIDER: Motion Control
Researchers at Los Alamos National Laboratory have developed a rocket motor concept that could be used to power CubeSat low-cost satellites. The Los Alamos team recently tested a...
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INSIDER: Materials
Large elements for NASA's Space Launch System are in production, and will be joined together to create the rocket's 212-foot-tall core stage, the backbone of the SLS rocket. The core...
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INSIDER: Software
Researchers have devised a novel way to help keep a driverless vehicle under control as it maneuvers at the edge of its handling limits. The new technology is being tested by...
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INSIDER: Manufacturing & Prototyping
NASA tested a 3D printed rocket engine turbopump with liquid methane – an ideal propellant for engines needed to power many types of spacecraft for NASA’s journey to Mars. During the full-power...
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News: Photonics/Optics
A low-energy nuclear reaction imaging technique designed to detect the presence of weapons-grade uranium and plutonium in cargo containers arriving at U.S. ports was...
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INSIDER: Motion Control
The propulsion subsystem for NASA's Green Propellant Infusion Mission (GPIM) has been integrated onto the spacecraft, moving the mission another major step toward scheduled launch in...
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INSIDER: Electronics & Computers
Advances in magnet technology have enabled researchers at MIT to propose a new design for a practical compact tokamak fusion reactor — and it’s one that might be realized in...
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Products: Electronics & Computers
Elmo Motion Control (Nashua, NH) offers the NANO Gold Twitter servo drive that delivers up to 4000 Watts of qualitative power, current up to 50A at 100VDC, and up to 15A/200V with advanced servo capabilities and support for EtherCAT...
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News: Propulsion
Researchers have developed a new two-stroke engine notable for its low consumption and low level of pollutant emissions. The engine is the result of Powerful, a European project...
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News: Propulsion
Underwater Robot Skims for Port Security
MIT researchers unveiled an oval-shaped submersible robot, a little smaller than a football, with a flattened panel on one side that it can slide along an underwater surface to perform ultrasound scans.Originally designed to look for cracks in nuclear reactors’ water tanks, the robot could also inspect...
News: Motion Control
Engineers are preparing to test parts of NASA's Space Launch System (SLS) rocket that will send humans to space. They installed an RS-25 engine on the A-1 Test Stand at Stennis Space Center....
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News: Robotics, Automation & Control
What will it take to land heavier spacecraft on Mars? How will engineers slow large payloads traveling at supersonic speeds in a thin Martian atmosphere? The Low Density Supersonic...
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News: Software
New Algorithms Enable Self-Assembling, Printable Robots
In two new papers, MIT researchers demonstrate the promise of printable robotic components that, when heated, automatically fold into prescribed three-dimensional configurations.One paper describes a system that takes a digital specification of a 3-D shape — such as a computer-aided design,...
Applications: Motion Control
Worldwide an estimated 185 million people use a wheelchair daily. A company based in Auckland, New Zealand, has developed an innovative robotic technology that helps people with mobility...
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News: Propulsion
Wireless Bicycle Brake Could One Day Stop a Train
Wireless networks today are able to brake just one bike, but in the future, they could regulate entire trains. Computer scientists at Saarland University in Germany are designing mathematical calculations to check such systems automatically. Professor Holger Hermanns, whose group developed the...

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