2015.B.3.3. PocketRTG – a CubeSat scale radioisotope thermoelectric generator using COTS fuel


Eliott Wetheimer (1)
Lucy Berthoud (1)
Michael Johnson (1,2)

  1. University of Bristol, United Kingdom
  2. PocketSpacecraft.com, United Kingdom




Interplanetary CubeSat, Deep space, radioisotope thermoelectric generator


Radioisotope thermoelectric generators (RTG) will likely be required for interplanetary CubeSat missions to the outer planets due to reduced solar flux – for example, approximately 1% at Saturn compared to that available at Earth. We present preliminary design work for PocketRTG – a 0.5U sized RTG using commercial off the shelf (COTS) Strontium-90 fuel designed to generate approximately 50mW.


  • Download slides in PDF format here (<1MB)

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