Oleg Zabluda's blog
Friday, August 31, 2018
Advanced Electric Propulsion System (AEPS) is a solar electric propulsion system for spacecraft that is being designed, developed and tested by NASA and Aerojet Rocketdyne for large-scale science missions and cargo transportation. It is "the most likely engine"[1] to propel the PPE module of the planned Lunar Orbital Platform-Gateway to be launched in 2022. Four identical AEPS engines would consume most of the 50 kW generated by solar power.

The Power and Propulsion Element (PPE) for the Lunar Gateway will have a mass of 8-9 metric tons and will be capable of generating 50 kW of solar electric power for its ion thrusters
The AEPS Hall thruster system was originally developed since 2015 by NASA Glenn Research Center and the Jet Propulsion Laboratory to be used on the now cancelled Asteroid Redirect Mission. Work on the thruster did not stop following the mission cancellation in April 2017 because there is demand of such thrusters [...] Since May 2016,[6] further work on AEPS has been transitioned to Aerojet Rocketdyne via a competitive contract,
AEPS is based on the 12.5 kW development model thruster called 'Hall Effect Rocket with Magnetic Shielding' (HERMeS). The AEPS solar electric engine makes use of the Hall-effect thruster [...] aims to achieve [...] a full life of about 50,000 hours.


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