Vigilant Eagle
Encyclopedia
The Vigilant Eagle Airport Protection System is a proposed directed-energy weapon
Directed-energy weapon
A directed-energy weapon emits energy in an aimed direction without the means of a projectile. It transfers energy to a target for a desired effect. Intended effects may be non-lethal or lethal...

 under development by the U.S. military
United States armed forces
The United States Armed Forces are the military forces of the United States. They consist of the Army, Navy, Marine Corps, Air Force, and Coast Guard.The United States has a strong tradition of civilian control of the military...

 under a Defense Department contract with Raytheon
Raytheon
Raytheon Company is a major American defense contractor and industrial corporation with core manufacturing concentrations in weapons and military and commercial electronics. It was previously involved in corporate and special-mission aircraft until early 2007...

. It would create an invisible microwave dome around an airport that could block missiles heading toward incoming and outgoing aircraft.

Man-portable air-defense systems (MANPADS) are shoulder-launched surface-to-air missiles (SAMs) that present a tremendous threat to both civilian and military aircraft. It is estimated 700,000 MANPADs are built and sold across the world, thousands of which are unaccounted for and sold daily on the black market. The U.S. government says these type of attacks have been used in at least 36 times on civilian aircraft in the past three decades.

A successful attack of this kind would cause more than loss of life. The estimated cost of a four-hour operational shut down of an airport is $40 million. This would have an estimated $10 billion impact on the U.S. economy and an estimated $300 billion impact globally.

History

Raytheon's experimentation with directed energy weapons began when its research labs' experiments had inadvertently produced the first microwave oven in 1958. Under William Swanson, Raytheon’s chairman and CEO, the company has become even more focused on directed energy systems. He has stated "When I look at directed energy, it's clear that if someone is gonna put us out of business, it will be us."

Raytheon Missile Systems developed Vigilant Eagle under a U.S. Defense Department contract and has discussed with the Department of Homeland Security, the potential of using it at U.S. airports. In 2006, a $4.1 million contract with the Department of Homeland Security was issued to assess the anti-missile system.

Within the last three years, the company's researchers have shot down multiple types of shoulder-fired antiaircraft missiles at a distance of several miles with pulses of microwave energy. The company says that its prototype high-power microwave (HPM) weapon, with an energy focused to within 1 degree, sends an electrical pulse which penetrates through openings in the missile’s metal parts and reaches its computers and guidance system. This energy is powerful enough to damage electrical components and scramble computer memories causing the missile to fly off course. Raytheon has tested the system at an American airport, but both the company and the airport are unwilling to disclose which one because of a confidentiality agreement.

Effects

The VE works by directing electromagnetic radiation
Electromagnetic radiation
Electromagnetic radiation is a form of energy that exhibits wave-like behavior as it travels through space...

; specifically, a set of high-frequency microwaves toward any projectile fired at an aircraft that is either taking off or landing. For example, if someone were to launch a shoulder-fired projectile or missile from outside the airport during an aircraft's takeoff, the VE airfield would detect the missile's presence and would shoot a microwave beam to deflect it from the airfield.

Vigilant Eagle consists of three major components: a missile detecting and tracking subsystem (MDT), a command and control system, and a scanning array. The MDT is a fixed grid of passive infrared (IR) cameras. The command and control system determines where the launch of the projectile is taking place. Using the scanning array, it can interfere with the MANPADS' guidance system and deflect it away from the aircraft.

Advantages and disadvantages

The first large difference between the ground-based Vigilant Eagle and other aircraft protection systems is the lower cost between it and its rivals. Mike Booen, Raytheon’s chief of directed-energy programs estimates that the system can be built for

Airline carriers have also stated concerns with airplane-mounted systems because of the weight and cost of these systems. The DHS has stated that the cost of each flight carrying the countermeasure would be approximately $350; however, during the airlines’ best year ever, they only earned about $600 per flight. It is also unclear whether the airlines or the government would bear the cost of using these types of systems.

The biggest challenges in implementing this new system is whether the private and public sectors can be convinced the new technology is worth the expensive price and difficult logistics. A government-accountability report from April 2009 cited several the problems facing the Defense Department's non-lethal weapons program. This report used another of Raytheon's non-lethal weapons systems, the Active Denial System
Active Denial System
The Active Denial System is a non-lethal, directed-energy weapon developed by the U.S. military. It is a strong millimeter-wave transmitter primarily used for crowd control . Some ADS such as HPEM ADS are also used to disable vehicles. Informally, the weapon is also called the heat ray...

, as an example. One of the problems discussed was that the systems' components were "too complex".

Critics of the program have also stated that the diameter of protection provided by the system is inadequate to thwart all threats imposed by MANPADS. The University of Southern California
University of Southern California
The University of Southern California is a private, not-for-profit, nonsectarian, research university located in Los Angeles, California, United States. USC was founded in 1880, making it California's oldest private research university...

 reported in a study funded by the Federal Emergency Management Agency
Federal Emergency Management Agency
The Federal Emergency Management Agency is an agency of the United States Department of Homeland Security, initially created by Presidential Reorganization Plan No. 1 of 1978 and implemented by two Executive Orders...

 that “the capability of MANPADS to reach targets at altitudes of up to or beyond 15,000 feet allow these weapons to be used at a radius of 50 miles or more from most airports, making perimeter facility control largely ineffective.” Northrop Grumman
Northrop Grumman
Northrop Grumman Corporation is an American global aerospace and defense technology company formed by the 1994 purchase of Grumman by Northrop. The company was the fourth-largest defense contractor in the world as of 2010, and the largest builder of naval vessels. Northrop Grumman employs over...

 has also estimated that "the zone of vulnerability around the airport is 300 square miles." This would mean that the system would need to utilize a 50 miles (80.5 km) perimeter around the airport that is believed to be “unrealistic.”

See also

  • Missile defense
    Missile defense
    Missile defense is a system, weapon, or technology involved in the detection, tracking, interception and destruction of attacking missiles. Originally conceived as a defence against nuclear-armed Intercontinental ballistic missiles , its application has broadened to include shorter-ranged...

  • Directed-energy weapon
    Directed-energy weapon
    A directed-energy weapon emits energy in an aimed direction without the means of a projectile. It transfers energy to a target for a desired effect. Intended effects may be non-lethal or lethal...

    s
  • Radiation
    Radiation
    In physics, radiation is a process in which energetic particles or energetic waves travel through a medium or space. There are two distinct types of radiation; ionizing and non-ionizing...

  • Long range acoustic device
    Long range acoustic device
    The Long Range Acoustic Device is a distance hailing device and non-lethal crowd control weapon developed by LRAD Corporation to send messages, warnings, and harmful, pain inducing tones over longer distances than normal loudspeakers....

  • Area denial weapons
    Area denial weapons
    An area denial weapon is a device used to prevent an adversary from occupying or traversing an area of land. The specific method used does not have to be totally effective in preventing passage as long as it is sufficient to severely restrict, slow down, or endanger the opponent...

    , to prevent an adversary from occupying or traversing an area
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