The Icarus Pile

Score one for the Airborne Laser.

In a milestone for the ambitious directed-energy project, now dramatically downsized, the Pentagon's Airborne Laser prototype weapons system destroyed a ballistic missile that was in flight. The shootdown took place February 11 off the central coast of California.

"The Airborne Laser Testbed team has made history with this experiment," said Greg Hyslop, vice president and general manager of Boeing Missile Defense Systems, in a statement released Friday. Boeing is the prime contractor for the Defense Department project.

The U.S. Missile Defense Agency was equally enthusiastic about the results. "The … Read more

Micro Air Vehicles (MAVs) may be small, but they're costly, so researchers have devised ways for them to fly in GPS-denied urban and indoor environments where they could otherwise get lost or crash.

Existing highly-precise, non-GPS navigation units are too large, heavy, and expensive to install on an MAV. But the Robust Robotics Group at MIT's Computer Science and Artificial Intelligence Laboratory addressed this problem by developing algorithms that allow a miniature robo-quadrocopter to estimate their relative position, identify a clear path and then fly through dense air space.

"The size, weight, and budget limitations of … Read more

The race to develop an unmanned aircraft that can stay aloft for five years at a stretch has entered its second phase, where the prize is a $155 million DARPA contract to build a small-scale demonstrator model.

The project, called Vulture II, will pit three defense contractor teams--Aurora Flight Sciences, Boeing, and Lockheed Martin--against one another and the clock for the right to build a small-scale, working version of a high-altitude, electric-propelled UAV capable of remaining aloft and on station for three months.

The Vulture is expected to serve as an electronic sensor and military communications platform, and … Read more

It may look like something your kids brought home from shop class, but this rugged, French-designed micro air vehicle (MAV) could be a missing link between smooth, steady hover and fast, forward flight.

The inventor, Dr. Jean-Marc Moschetta, professor of aerodynamics at the Institut Superieur de l'Aeronautique et de l'espace in Toulouse, France, created what he calls the MAVion with both commercial and military markets in mind.

A mere 30 centimeters long, the MAVion combines fixed wings with two counter rotating propellers, allowing it to operate with high aerodynamic efficiency--even in adverse conditions, according to the professor.

"… Read more

The Excalibur, a new turbine-electric hybrid propelled VTOL (vertical takeoff and landing) unmanned attack drone, has successfully completed another test flight after taking on two new onboard computers last week.

Developed by Aurora Flight Sciences Corp. for the U.S. Army Aviation Applied Technology Directorate and the Office of Naval Research, the Excalibur is another radical robo-craft concept vying to fill the military's burgeoning demand for specialized UAVs.

The demonstrator model, weighing in at 700 pounds, can hit 520 mph, making it one of the fastest drones around, according to the Aurora. The nearly autonomous flight control system allows … Read more

The X-51A WaveRider is one step closer to its inaugural test flight later this year, now that airmen at Edwards Air Force Base have successfully "mated" the scramjet-propelled vehicle to a B-52 Stratofortress.

In December, an Air Force Flight Test Center B-52 is scheduled to papoose the X-51A to 50,000 feet over the Pacific Ocean before cutting it loose. At that point, a solid rocket booster from an ATACMS missile will fire up, accelerating the X-51 to about Mach 4.5. That's when the supersonic combustion ramjet kicks in, pushing the WaveRider to more than Mach … Read more

As with landmines and napalm, cluster munitions are decidedly politically incorrect, and there is a concerted international effort to ban them. Problem is, they're highly effective, and countries that actually fight wars, like the U.S. and Russia, are loath to give them up.

However, a "humanitarian" version of the "cluster bomb" may head-off some objections to their continued production, or at least provide cover for those who want to keep them in the inventory. Billed as safer alternative to cluster munitions, Sensor fuzed weapons (SFW) contain independent self-destruct features based on altitude, time elapsed, … Read more

A new kamikaze drone out of Israel is designed to hang about overhead until it spots a target, then crash into it with "pinpoint accuracy" destroying the target, and itself, with 50 pounds of on-board explosives.

While classified as a Loitering Munition, the HAROP comes equipped with many of the usual UAV capabilities: high-performance FLIR and color CCD camera with 360-degree hemispherical coverage, allowing it to transmit video back to its operators just like a surveillance drone.

Like its predecessor the Harpy, the HAROP will be used to take out high-value targets such as air defense radars that … Read more

Ubiquitous, reliable, and free to the public, the Global Positioning System (GPS) is now taken for granted, but don't dump those maps from the glove box just yet, since it's uncertain for how long the U.S. government can continue to deliver.

The US plans to invest more than $5.8 billion through 2013 to modernize and replenish the existing GPS satellite constellation. But facing cost overruns of $870 million and "significant" technical problems, the US Air Force, which is in charge of GPS acquisition, has struggled to build and deploy the next generation satellites on … Read more