Commercial Resupply Services

Commercial Resupply Services
CRS  

Northrop Grumman conducts regular Space Station cargo missions under the Commercial Resupply Service (CRS) program. Under the contract, Northrop Grumman is delivering approximately 30,000 kg. of pressurized cargo over 11 missions to the Orbiting Laboratory, providing a U.S.-produced and-operated cargo delivery service for the Station, to complement Russian, European and Japanese Space Station cargo vehicles.

The design, manufacture and test of Antares occurs at Northrop Grumman locations in Dulles, VA, and Chandler, AZ. Cygnus consists of a Service Module (SM) which is produced and integrated in Dulles ,VA, and a Pressurized Cargo Module (PCM) provided by Northrop Grumman's industrial partner Thales Alenia Space. The cargo destined for the space station is loaded into PCM and the two modules are mated together at the launch site. CRS launches occur at NASA's Wallops Flight Facility and at Cape Canaveral Air Station with integrated mission operations conducted from control centers in Dulles,VA and Houston, TX and Tsukuba Japan.

The Cygnus PCM is designed with two configurations. The standard configuration (used for first three CRS missions) carried up to 2,000 kg (4,409 lb.) of cargo, while the enhanced variant (used for OA-4 and subsequent missions) carries up to 3,513 kg (7,733 lb.).