CASTOR motor family

Northrop Grumman's CASTOR motor family is a family of solid rocket motors spanning first-stage, second-stage, and strap-on booster applications. The CASTOR series includes the exact IVA, 30/30B/30XL, and 120 models represented as child records here; the company's catalog traces the heritage to Scout and Little Joe and records more than 1,900 flights for the CASTOR I-IV family. Northrop Grumman's current commercial-motors page describes the family as flight-proven and expanding across launch and target-vehicle applications, with CASTOR 30XL powering Antares upper stages. Individual model lifecycle status, specifications, lineage, and installations remain on the exact child records.