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science and technology

Underwater Travel Becomes Superfast

March 2007
By Rita Boland

People and materiel soon may be moving across the ocean much more quickly and outrunning torpedoes in the process. A developmental technology will use supercavitation to move underwater vessels at high speeds. In addition to the rapid rate, the project aims to sustain that pace over long periods of time and to maintain control and steering of the watercraft.

Realignment Helps Meet Changing Warfighter Needs

February 2007
By Rita Boland

To focus on technologies that have global- or theaterwide effect and that span the branches of the U.S. military, the Defense Advanced Research Projects Agency has combined its Advanced Technology Office and Special Projects Office to form the Strategic Technology Office. The office is determining what capabilities warfighters lack and finding solutions for current problems and potential needs.

Navy Railgun Program Takes Aim

January 2007
By Henry S. Kenyon

In coming decades, warfighters could rely on artillery support from U.S. Navy warships more than 200 miles away. Instead of conventional cannons or rockets, these ships would use electromagnetic launchers to accelerate projectiles to many times the speed of sound. Using electricity instead of gunpowder to fire guided munitions, the weapons offer the potential of rapid, highly accurate precision attacks without the logistics and safety issues of conventional naval guns.

System Moves Light With Electrons, Not Gears

May 2006
By Henry S. Kenyon

Several decades from now, a U.S. unmanned combat aircraft orbiting a battlefield will identify a ground target with its sensors and use its communications laser to beam the coordinates to an overhead satellite. After receiving target confirmation from analysts on the other side of the planet, the aircraft will bank sharply, refocus its optical communications array to weapons mode and destroy the target with a multi-kilowatt laser pulse. The system will then revert to its data transmission mode to uplink a battle-damage assessment. This may sound like science fiction, but recently developed technology that electronically moves and focuses lasers may one day make this scenario a reality.

Semantic Web Ready for Prime Time

April 2006
By Henry S. Kenyon

A World Wide Web-enabled technology is on the verge of dramatically changing the way people and computers interact and share information. It provides a common architecture that permits data to be communicated and reused across application, enterprise and community boundaries. This automated context mapping capability will allow complex network-centric systems to reach their full potential and to scale beyond present systems.

Stiletto Cuts a Swath to New Navy Technologies

March 2006
By Robert K. Ackerman

What may be the oddest looking U.S. Navy craft to set sail in years is carrying the hopes of visionaries who aim to transform Navy ships and missions with the aid of advanced technologies. The composite-material craft couples a new hydrodynamic design with a modular network-centric electronic system to leverage the many innovations emerging from the information technology sector.

Military Embraces New Internet Standard

January 2006
By Henry S. Kenyon

The U.S. Defense Department is migrating to an updated version of the Internet protocol that will efficiently connect warfighters and their equipment to theater and global data networks. Internet protocol version 6, or IPv6, can support an unlimited number of site addresses for wireless communications devices, remote sensors, vehicles and precision-guided munitions while offering enhanced security and administrative features.

Water Sparks Small Power Pack

November 2005
By Henry S. Kenyon

U.S. warfighters soon may power their battlefield electronics with a lightweight water-based fuel cell system. Consisting of thin metal alloy plates soaking in salt water, the technology allows soldiers to replace heavy disposable batteries with lightweight rechargeable ones. Because the devices have no moving parts and are made of readily available materials, they may provide troops with a simple and robust reserve or primary power supply.

Keeping a Finger on the Pulse of Spectrum Management

February 2001
By Christian B. Sheehy

An experimental radio technology may provide a more efficient means of alleviating bandwidth congestion in wireless communications. Operating at lower power than most radio devices, time-modulated ultrawideband technology fuses communications, radar and tracking capabilities into one piece of hardware that can deliver improved performance while remaining compatible with most legacy and commercial off-the-shelf systems.

Microprocessor Research Aims At Shattering Speed Records

January 1999
By Fred V. Reed

One year after surviving the year 2000 problem, computer users may be blessed with huge leaps in processing speeds and capabilities. Researchers at semiconductor manufacturers are developing new generations of chips that, in just three years, will offer 15 times as many transistors and compute several times as fast as today's models.

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