Showing posts with label LDPE. Show all posts
Showing posts with label LDPE. Show all posts

Tuesday, January 17, 2023

Third military satellite for the LDPE program reaches orbit

Northrop Grumman Corp's Long Duration Propulsive ESPA (LDPE)-3A spacecraft reached orbit on Sunday as part of the U.S. Space Force's USSF-67 mission. This marks the third successful launch in the LDPE program.

The LDPE-3A was built using Northrop Grumman’s ESPAStar. The ESPAStar system provides a modular, cost-effective way of carrying multiple experiments into space and deploying small satellites. Also known as a bus, ESPAStar carries hardware so five independent missions can be loaded aboard the satellite. This eliminates the need for each mission to wait for a future launch opportunity.

Northrop Grumman also designed, developed, and implemented the command and control, and mission execution software system for the LDPE program. The software system uses a common baseline across multiple programs, putting more capability in the hands of customer operators at a lower cost.

A SpaceX Falcon Heavy launch vehicle delivered LDPE-3A to near-geosynchronous Earth orbit for a one-year mission. The Falcon Heavy also carried the second Continuous Broadcast Augmenting SATCOM satellite into orbit with LDPE-3A.

USSF-67 is the third mission for the LDPE program. The Northrop Grumman-built LDPE-1 launched aboard the STP-3 mission in December 2021 and LDPE-2 aboard the USSF-44 mission in November 2022. Northrop Grumman will continue to deliver future ESPAStar spacecraft for future USSF missions.