GPHS-RTG

Overview

The general-purpose heat source radioisotope thermoelectric generator (GPHS-RTG) was specifically designed for US space missions. GPHS-RTG has an overall diameter of 0.422 m and a length of 1.14 m, mass of about 57 kg and is capable of generating around 285 to 300 W at beginning of life (BOL) - assuming 5.2 We/kg and 7.8 kg of Pu-238. Thermal excess heat was approximately 4,400 to 4,500 W.

Specifications

Form Factor
SmallSat
Vendor
NASA
Dry Mass
57.0 kg
Average Power
N/A
Heritage
Yes
Status
Retired

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