APSS was formed on April 1, 2004, and is chartered with extending the company's reach into advanced propulsion, composite and space systems technologies.
Don Shaffer, senior vice president, APSS, said the recent contract wins highlight ATK's wealth of experience in advanced composite structures used in next-generation weapons and space systems.
"Composite structures are critical to affordable and safe space exploration as well as advanced weaponry," said Shaffer.
"ATK is a world leader in composite material fabrication and these recent wins confirm the company's strategy to group all of its composite engineering and fabrication in one cohesive business that gives the best value to our customers."
ATK is a $2.4 billion advanced weapon and space systems company employing 13,100 people in 23 states.