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October 22, 2008 6:00 AM PDT

Ultrasound cuff to stop internal bleeding on battlefield

by Mark Rutherford
  • 1 comment
(Credit: DARPA)

Internal bleeding can cause irreversible haemorrhagic shock within 30 seconds or progressive shock within eight hours, either way, it's not good and the military wants a portable, noninvasive way to detect and stop it right on the battlefield.

To that end, the Defense Advance Research Projects Agency (DARPA) has contracted with Siemens Healthcare, the University of Washington's Centre for Industrial and Medical Ultrasound and Texas A&M to develop something called the Deep Bleeder Acoustic Coagulation cuff (DBAC). The cuff is a semi-automated, ultrasound device designed to cut blood loss and shock resulting from combat limb injuries, one that can be operated by any GI with minimal training.

As it stands now, a wounded soldier can quickly lose 25 percent of blood volume while waiting to be evacuated. This can lead to progressive shock and death. On the spot treatment with the cuff would curtail these needless combat deaths and amputations, according to the military.

A medic applies the cuff to the injured limb, the DBAC automatically locates the bleeding and triggers a dose of high-intensity, focused ultrasound toward it, this prompts quick coagulation and an end to the bleeding.

The system uses doppler-based "automated bleed detection algorithms," according to DARPA. The software used is based on "unique spectral and power Doppler bleeder signatures that, when coupled to volumetric data, allows for automated bleed detection and localization."(PDF)

Blood mimicking fluids and heat resistant, tissue mimicking phantoms were custom created to allow DBAC testing on a full-sized leg mockup. DARPA hopes to be able to have a prototype in 18 months.

July 3, 2008 6:00 AM PDT

Thinking green with the 'Humvee of the air'

by Mark Rutherford
  • 9 comments
(Credit: Frontline Aerospace)

Another entrant in the race to produce a ducted-fan-propelled, vertical-take-off-and-landing UAV, the planned "humvee of the air" will morph to different missions and reach targets three times faster than helicopters, according to the manufacturer.

The official name of the vehicle is VTOL-Swift Tactical Aerial Resource, or V-STAR. With a cruising speed of 288 knots, a 650-mile range and a 400-pound payload, the V-STAR promises to be a "breakthrough solution for frontline military logistics," according to Broomfield, Colo.-based Frontline Aerospace. The aircraft would use a Rolls-Royce gas turbine with counter-rotating blades and "diamond-box-wing" design that transitions to forward flight when needed.

The company is touting the V-Star's multirole flexibility. "The modular payload approach allows for rapid change-out in the field--one minute providing troops with ammo, food, water and fuel--and the next minute providing tactical reconnaissance, communications and close combat support," according to the press release.

It's also making a pitch for green appeal, by incorporating advanced MicroFire technology to give it a decidedly un-Humvee-like fuel efficiency and reduced carbon emission footprint.

"Frankly, we are keeping our MicroFire capability somewhat under wraps at this point," said Frontline founder and Chief Executive Officer Ryan S. Wood. "But we realize MicroFire can increase endurance and fuel economy not only for UAVs, but also create significant fuel savings for a whole class of helicopter engines worldwide--thus creating a true 'green' helicopter."

MicroFire is a "high-temperature counter-flow heat exchanger that extracts heat from the hot engine exhaust and transfers it to the compressed engine air before combustion," an operation that "can sometimes double the overall thermal efficiency of the engine," according to Frontline.

Given the flying Hummer's ability to morph from attack to recon or target acquisition and then back to combat logistics all while fighting global warming--there's only one thing left to do. Build a stretch version in time for prom season.

May 16, 2008 9:06 PM PDT

'Interim' firepower on the way for Marine Osprey

by Mark Rutherford
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(Credit: BAE)

The Marine Corps may have found an "interim" solution to the one of the V-22 tilt-rotor Osprey's many operational quandaries: How to shoot back.

This August, the Marines are expected to take delivery of BAE's (British Aerospace and Marconi Electronic Systems) Remote Guardian System, a GAU-17 7.62-millimeter, mini-gun-equipped, remotely operated weapon that swivels to squirt out 360 degrees of accurate, sustained, suppressive fire "throughout the aircraft's entire flight envelope," according to BAE. This would be a vast improvement over the aircraft's current protection, an M240D 7.62-millimeter gun manned by a crew member hanging on the open rear ramp. But it's a pea shooter compared to the once-contemplated three-barrel, GAU-19 Gatling gun, capable of spraying .50 cals at up to 2,000 armor-piercing rounds per minute (PDF).

(Credit: BAE)

The RGS is belly-mounted in a retractable turret, which conserves cabin space and payload capacity. Because it receives input from the aircraft's vehicle management system and continuously computes the impact point, the gunner simply points and shoots, while a computer continually adjusts for wind and vehicle motion.

How quickly the RGS follows the Osprey into the combat zone will depend on how much testing the Marine Corp ends up doing before it commits. BAE tested the system off the back of a Humvee, and it worked for them--twice.

August 24, 2007 12:26 PM PDT

Dropped, frozen and fried, 'Victum' survives

by Mark Rutherford
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(Credit: Acturion Datasys)

From Bavaria here's a new, "ruggedized" military-spec notebook PC with a keyboard that converts to a touch-screen, tablet PC in seconds by flipping the display 180 degrees and pressing down.

The magnesium alloy housing (4.85 pounds with battery) is completely sealed making it splash-proof, according to Acturion Datasys. (Even the integrated speaker is waterproof.) Since there are no fans, processor heat is distributed directly to the housing, which doubles as radiator.

Two models are available--the Victum-Note V10 (10.4-inch XGA display) and the Victum-Note V12 (WXGA 12.1-inch). Both come with sunlight-readable displays and work off a Intel Core Dual Processor Yonah U2500.

Options include Bluetooth, built-in 1.3MP CCD camera, GPS receiver for satellite navigation and a couple of different modems. Windows XP Pro or Windows Vista comes pre-installed. Linux should be available soon, according to the company. To qualify for military standard certification a PC must undergo temperature testing (minus-4 Fahrenheit to 131 Fahrenheit), plus withstand a 3-foot drop onto a concrete slab and continue to drive on.

Is it too late to do something about that name? Who wants to Farfegnugen a Victum around the battlefield.

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About Military Tech

The military establishment's ever increasing reliance on technology and whiz-bang gadgetry impacts us as consumers, investors, taxpayers and ultimately as the "defended." Our mission here is to bring some of these products and concepts to your attention based on carefully selected criteria such as importance to national security, originality, collateral damage to the treasury and adaptability to yard maintenance-but not necessarily in that order.

Mark Rutherford is a member of the CNET Blog Network and is not an employee of CNET.

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