Beaming at Boeing

A Boeing-led industry team and the

(MDA) took a major step toward demonstrating the capability of the Airborne Laser (ABL) by successfully firing surrogate lasers from inside the aircraft.

During recent ground tests at Boeing facilities in Wichita, Kansas, the team placed the lasers in the ABL aircraft, a modified Boeing 747-400F, and fired them repeatedly into a measuring device called a range simulator.

The tests verified that the ABL team properly aligned the optical beam train, a series of optical components, steering and deformable mirrors, and sensors that will guide lasers to an actual target. The equipment exercised in the tests is part of the beam control/fire control system designed and integrated by Lockheed Martin.

The lasers used in the tests were low-power surrogates for ABL's high-energy laser and two illuminator lasers. The program plans to install actual illuminators in the jet for ground and flight tests later this year.

The track illuminator laser is designed to track all classes of hostile ballistic missiles. The beacon illuminator laser will measure atmospheric conditions, allowing the beam control/fire control system to compensate for atmospheric turbulence in the high-energy laser's path to a target.

During this year's flight tests, the illuminators will be fired in flight at a missile-shaped image painted on a test aircraft.

The high-energy laser, which achieved lethal power and run-times in a ground laboratory in December 2005, is currently being refurbished and will be installed in the ABL aircraft in 2007 to prepare for the program's first missile shoot-down test, slated for 2008.

"The surrogate-laser tests provide further proof that the ABL design is sound," said Pat Shanahan, vice president and general manager of Boeing Missile Defense Systems. "They also bring ABL closer to important flight testing later this year and to the 2008 lethal shoot-down milestone. This is an exciting time for the program, and our team has worked hard to make it that way."