The Eagle-S configuration of the Eagle spacecraft product line is uniquely designed to take advantage of excess capacity available on missions using the Evolved Expendable Launch Vehicle (EELV), Falcon Heavy, Falcon 9 or Antares. The Eagle-S spacecraft is designed as a secondary payload leveraging the lower launch costs as a rideshare and gaining the benefit of high reliability launch platforms. An Eagle testbed is available for payload testing.
The Eagle-S bus has been designed to accommodate an optional fully redundant hardware suite for missions that require longer mission life. Using an EELV Secondary Payload Adapter (ESPA) as its primary structure allows Eagle-S to be launched with another spacecraft as demonstrated with the Northrop Grumman-built Lunar CRater Observation and Sensing Satellite (LCROSS).
The LCROSS spacecraft, launched as the secondary payload with the Lunar Reconnaissance Orbiter (LRO) spacecraft on an EELV, resulted in substantial launch cost savings and 100 percent mission success.
The Eagle-S spacecraft provides affordability while maintaining the reliability and performance for which Northrop Grumman is known.