Castor (rocket Stage)

Castor (rocket Stage)

The Castor family of solid-fuel rocket stages and boosters were built by Thiokol (now ATK) and used on a variety of launch vehicles. They were initially developed as the second stage motor of the Scout rocket. The design was based the MGM-29 Sergeant, a surface-to-surface missile developed for the United States Army at the Jet Propulsion Laboratory.