Astro Aerospace - Enabling mission success in this solar system and beyond
http://www.northropgrumman.com/AstroA...

Astro Aerospace's Telescopic Tube Mast (TTM) is a lightweight, scalable, strong, and stiff deployable mast. The mast is made up of tubular sections that stow within one another to form a compact stowed package. The mast is deployed using our high force STEM actuator. Deployment has been demonstrated for masts 110 feet in length with a push force of greater than 120 pounds. Astro's unique design allows the mast to be deployed and fully retracted while on-orbit.