Get Aerojet Rocketdyne essential facts below, , or join the Aerojet Rocketdyne discussion. Add Aerojet Rocketdyne to your PopFlock.com topic list for future reference or share this resource on social media.
RS-25 (LH2/LOX) - Previously known as the Space Shuttle main engine (SSME), it was the reusable main engine developed by Rocketdyne for the now-retired Space Shuttle. Remaining RS-25D engines are planned for use on early Space Launch System rocket launches after which an expendable version, RS-25E will be developed for follow-on SLS launches.
Baby Bantam (kerosene/LOX) - In June 2014, Aerojet Rocketdyne announced that they had "manufactured and successfully tested an engine which had been entirely 3D printed." The engine is a 22 kN (5,000 lbf) thrust engine.
The AR-22 is an engine in development since 2017 for the XS-1 spacecraft, also known as the Phantom Express. The engine is based on the RS-25 and utilizing parts remaining in Aerojet Rocketdyne and NASA inventories from earlier versions of the RS-25. Two of the engines would have been built for the spaceplane. Boeing pulled out of the project in January of 2020. 
X3 Ion Thruster
On 13 October 2017, it was reported that Aerojet Rocketdyne completed a keystone demonstration on a new X3 ion thruster, which is a central part of the XR-100 system for the NextSTEP program. The X3 ion thruster was designed by the University of Michigan and is being developed in partnership with the University of Michigan, NASA, and the Air Force. The X3 is a Hall-effect thruster operating at over 100 kW of power. During the demonstration, it broke records for the maximum power output, thrust and operating current achieved by a Hall thruster to date. It operated at a range of power from 5 kW to 102 kW, with electrical current of up to 260 amperes. It generated 5.4 Newtons of thrust, "which is the highest level of thrust achieved by any plasma thruster to date." A novelty in its design is that it incorporates three plasma channels, each a few centimeters deep, nested around one another in concentric rings. The system is 227 kg (500 lb) and almost one meter in diameter.