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Re:NASA completes full-power tests of small, portable nuclea... by InclinedPlane on Thursday May 03, 2018 @04:13PM (#16989481)
No, it is a reactor not an RTG.

It is self-regulating (load following) to some extent so it doesn't have many moving parts. It has two main control mechanisms: a neutron absorbing control rod and a Beryllium neutron reflector.

Lots of details here: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/201400...

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