Who is Northrop Grumman?
Northrop Grumman is an American aerospace and defense technology company. Aside from military aircraft and systems, Northrop Grumman also develops a number of space systems for NASA and other American space launch providers — solid rocket boosters (SRBs) and satellites.
“Northrop Grumman is a leading global security company providing innovative systems, products and solutions in autonomous systems, cyber, C4ISR, space, strike, and logistics and modernization to customers worldwide.”
(from Northrop Grumman)
Northrop Grumman is currently developing the three-stage OmegA heavy-lift rocket, which shares similar technology with their now defunct Ares I and Liberty projects. Northrop Grumman is currently leasing KSC LC-39B.
OmegA is a three stage, Space Shuttle-derived heavy-lift expendable launch vehicle being developed by Northrop Grumman. OmegA is planned to have two variations, OmegA and OmegA Heavy. Both of which will consist of two solid stages and a cryogenic upper stage. The first stage is powered by a Castor 600 SRB capable of 1,497,500 pounds of thrust, while its heavy configuration will be powered by a Castor 1200 SRB providing 2,247,200 pounds of thrust. A number of GEM-63 or GEM-63XL SRBs may be added to the first stage for additional thrust. OmegA’s second stage will be powered by a Castor 300 SRB capable of 803,020 pounds of thrust. The third stage consists of two Aerojet Rocketdyne RL-10C-5-1 hydrogen-fueled engines providing 23,825 pounds of thrust each. OmegA is designed to launch national security satellites for the US military, but can also be used to launch commercial payloads as well as crewed spacecraft. Northrop Grumman is aiming to launch OmegA from LC-39B sometime in 2021.