Tuesday, 8 July 2014

Military Researchers Design Real-life 'Transformer' Plane



UK aerospace and defense contractor BAE Systems have taken the wraps off several concepts it envisions as possible tools for the military in the decades to come — and if these designs are any guide, future battlefields are going to look like the set of a science fiction movie.

The most interesting of the concepts is called the Transformer, a stealth aircraft that's actually composed of three airplanes — a large, diamond-shaped model, and two smaller flanking planes.

The Transformer is theoretically capable of longer flights that conserve fuel by reducing overall aerodynamic drag.

Right now, the most common aerial refueling techniques are the probe-and-drogue and the boom method, both of which require the delicate mid-air synchronization of separate aircraft. The Transformer would conceivably make the prospect of longer missions easier by requiring fewer mid-air fueling runs.

Alongside the Transformer, the firm also unveiled several other concept vehicles, including a self-healing aircraft called the Survivor (see video above). This plane repairs its exterior in mid-flight using a lightweight adhesive fluid within a pattern of carbon nanotubes.

BAE's concept videos also include an aircraft capable of shooting a concentrated energy beam to disable missiles as well as an aircraft (see video below) with the ability to fabricate and deploy UAVs (unmanned aerial vehicles) using on-board 3D printers.

But while BAE's advanced research group is known for coming up with fascinating innovations, the company is careful to mention that the concepts are mere predictions of what might be possible by 2040.

"[W]e don't know exactly what sorts of aircraft technologies will be used in 2040 with any certainty," said Nick Colosimo, an engineering manager from BAE's R&D team, in a statement. "But it's great to be able to show the public some concepts that might be possible through projecting where today’s technology could get to."

Image:youtube BAE SYSTEM

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Friday, 18 April 2014

Micro Magnet Robots Can Build Mini Super Structures


Magnets and their properties have long fascinated everyone from children to scientists, but it's unlikely you’ve ever seen them harnessed quite like this.

SRI International, a non-profit research firm serving government and industry, has found a novel way to control tiny, low cost magnets via electromagnetic pulses delivered to them through contact with printed circuit boards.

The patented process, known as Diamagnetic Micro Manipulation (DM3), can move magnetically actuated micro-robots at speeds of up to 3 CM per second, in any direction and even along curved circuit boards. As long as there’s an electromagnetic current running through the circuitry, the magnets will hold on and do your bidding. The system can host not just one magnet on a board, but dozens, which can work together or perform separate task. All the instruction comes through the electromagnetic pulses in the board.

Making one or even dozens of little magnets move and almost dance in unison is entertaining, but it's when SRI started adding what it calls "effectors" to the magnets that things got really interesting. "Effectors" are basically little pieces of wires or other add-ons that allow the magnets to pick up, hold and manipulate materials.

In the video above, the magnets are programmed to grab, move and glue carbon-fiber sticks. Eventually, they built a 29-centimeter-long truss capable of supporting up to 2 kg.

According to SRI, which is working on the project with DARPA, "Our vision is to enable an assembly head containing thousands of micro-robots to manufacture high-quality macro-scale products while providing millimeter-scale structural control."

The company believes these micro robots could someday power entire micro factories.

The video, by the way, looks pretty mundane until you realize it’s garden variety magnets acting as if they’re alive and capable of working as hard as you’re everyday construction worker.

IMAGE: SRI INTERNATIONAL / SCREEN GRAB

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