MINNEAPOLIS, April 25 /PRNewswire-FirstCall/ -- Alliant Techsystems (NYSE: ATK - News) solid propulsion and composite technologies supported the successful launch yesterday of an Orbital Sciences Corporation (NYSE: ORB - News) air-launched Pegasus XL® rocket from Vandenberg Air Force Base, Calif. The Pegasus XL carried NASA's Aeronomy of Ice in the Mesosphere (AIM) satellite into space. ATK's Orion solid propulsion motors provided power for all three stages of the air-launch vehicle. The motors, which have flown on all Pegasus rockets since its first mission in 1990, are manufactured in Salt Lake City, Utah. The composite payload fairing, filament-wound solid rocket motor...