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ABL with the Conformal Window Open in the Nose Turret
This photo shows the conformal window on the Airborne Laser as it was exposed
for the first time in flight during a May 2005 test of ABL YAL-1A flight aircraft
over Edwards Air Force Base, Calif. The conformal window essentially is a very large
contact lens, ground to optical specifications.
Optical coatings, which make it glimmer and appear different colors, are necessary
because the window is the exit point for beams from three lasers (Tracking Illuminator
Laser, Beacon Illuminator Laser and Chemical Oxygen Iodine Laser) , and the entry
point for laser beams that are designed to bounce off the target and come back to
the aircraft carrying a wide range of information needed for ABL's mission.
The conformal window is 67 inches in diameter, weighs 288 pounds and took five
years to design and manufacture. Behind the window is a 59-inch wide, 315-pound
primary window, comprising a completed turret. USAF Photo.
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