2007年VOA标准英语-Research underway to Protect Airliners from Mis

The U.S. government is attempting to address concerns that civilian¹ aircraft are vulnerable to shoulder fired surface-to-air missiles. So it is testing a new anti-missile defense² for commercial aircraft. 

The threat did not begin with the events of September 11th, 2001. But those tragic³ acts of terrorism certainly heightened concerns that civilian aircraft is vulnerable to missile attacks.

To address those concerns, Los Angeles Airport is now doubling as a test center.  Defense contractor⁴ Northrop Grumman is testing its anti-missile technology on commercial aircraft.

"MANPADS," or small surface-to-air missiles that are easily launched by one person, are the concern.

Aircraft protection shown in a simulated missile attack

For now, Northrop is equipping 11 Federal Express jets with its 'Guardian⁶' anti-missile pods.The pods have sensors⁷ to spot and track incoming missiles and lasers to disable them. 

Northrop Grumman's Jack⁸ Pledger explains, "When the system locks on the missile it fires a very intense laser beam of infrared⁹ energy at the missile and knocks it off course."

The system is automatic. There is nothing for the crew to do. Pledger adds, "Before this, these systems were only used on military aircraft. We are going to operate in the commercial environment. We're going to see how this concept works in a commercial operation and we're going to gather data on the system."

Senator Barbara Boxer¹⁰ of California expresses her hope for success, "We are very hopeful that this will prove successful, - that it will prove affordable…."

The system costs between one and three million dollars per aircraft. The U.S. Congress is considering legislation that calls for installation of the system in all commercial aircraft.