Power

Could Spacecraft of the Future Be Powered By 'Lattice Confinement' Nuclear Fusion? (ieee.org) 62

schwit1 writes: Researchers at NASA's Glenn Research Center have now demonstrated a method of inducing nuclear fusion without building a massive stellarator or tokamak. In fact, all they needed was a bit of metal, some hydrogen, and an electron accelerator.

The team believes that their method, called lattice confinement fusion, could be a potential new power source for deep space missions. They have published their results in two papers in Physical Review C...

"What we did was not cold fusion," says Lawrence Forsley, a senior lead experimental physicist for the project. Cold fusion, the idea that fusion can occur at relatively low energies in room-temperature materials, is viewed with skepticism by the vast majority of physicists. Forsley stresses this is hot fusion, but "We've come up with a new way of driving it."

The article contains a good description of the technical details, and end by summarizing the hopes of the project's analytical physicist and nuclear diagnostics lead. "This method of fusion offers a potentially reliable source for craft operating in places where solar panels may not be useable, for example.

"And of course, what works in space could be used on Earth."
Wireless Networking

Researchers Build a Low-Power Radar on a CMOS ChIp (electronicsweekly.com) 35

The international R&D hub Imec has made a millimetre-wave motion detection radar integrated in a standard 28nm CMOS chip, reports Electronics Weekly, adding that it consumes just 62 mW,"making the sensor integrable into small, battery-powered devices..." The radar operates in the frequency band around 60 GHz, a license-free ISM band that can be used for new IoT applications for industrial and medical purposes... "Being extremely compact and energy efficient, the 60 GHz radar system can be integrated in smart health devices such as smartphones, health monitoring systems or wearables", says Barend van Liempd, program manager radar at imec.

"The radar enables such devices to sense their surroundings, which will shape the way in which we control and use these devices. For instance, a phone with integrated radar on your bedside table can monitor sleep quality by contactless tracking of breathing rate and heart rate variability. The radar is as well suited for classification of other physical activities, which will open a new range of smart applications in the context of personalized health, baby monitoring, sports, elderly care, patient monitoring, nurse efficiency or worker safety."

"Our prototype shows that radar technology is becoming ready for the next big step: the use in battery-powered devices. Now, we are looking for companies that want to exploit these ideas to enter the market by realizing new radar solutions", says Kathleen Philips, Director IoT at imec.

"It is thought to be useful for detecting finger and hand motion, heartbeat and a person's speed and position..." writes Joe2020, "but I'm sure Slashdot readers can think of a variety of other uses for it."
Transportation

Last Fall a Drone Swarm Surveilled America's Largest Nuclear Reactor -- Twice (forbes.com) 114

America's Nuclear Regulatory Commission honored a document request from a UFO group — which has inadvertently revealed a very real incident last fall at America's largest nuclear reactor in Arizona, reports Forbes: Documents gained under the Freedom of Information Act show how a number of small drones flew around a restricted area at Palo Verde Nuclear Power Plant on two successive nights last September. Security forces watched, but were apparently helpless to act as the drones carried out their incursions before disappearing into the night. Details of the event gives some clues as to just what they were doing, but who sent them remains a mystery...

"Officer noticed several drones (5 or 6) flying over the site. The drones are circling the 3 unit site inside and outside the Protected Area. The drones have flashing red and white lights and are estimated to be 200 to 300 feet above the site. It was reported the drones had spotlights on while approaching the site that they turned off when they entered the Security Owner Controlled Area..."

The drones departed at 22:30, eighty minutes after they were first spotted. The security officers estimated that they were over two feet in diameter. This indicates that they were not simply consumer drones like the popular DJI Phantom, which have a flight endurance of about half an hour and is about a foot across, but something larger and more capable. The Lockheed Martin Indago, a military-grade quadcopter recently sold to the Swiss Army, has a flight endurance of about seventy minutes and is more than two feet across. At several thousand dollars apiece minimum, these are far less expendable than consumer drones costing a few hundred. All of which suggests this was not just a prank.

The next night events were repeated...

The article notes that two months later America's Nuclear Regulatory Commission "decided not to require drone defenses at nuclear plants, asserting that small drones could not damage a reactor or steal nuclear material. It is highly likely that such sites are still vulnerable to drone overflights."

The article also notes that this reactor supplies electricity to major American cities including Los Angeles, San Diego, Phoenix, and Tucson.

Slashdot Top Deals