English: Diagram of the Inner Heat Source Unit (shown in packed form), the central part of the three Radioisotope Thermoelectric Generators (RTGs), included on the Voyager 1 and Voyager 2 spacecraft.
It contains 24 pressed plutonium-238 oxide spheres, generating about 2400 Watts of thermal power at launch time - which is the decay heat of the plutonium. Outside are placed 312 silicon-germanium (SiGe) thermoelectric couples, which are used to produce about 470 watts of electric power (at launch time), the remainder being dissipated as waste heat.
Date
Source
"Diagram: Heat Source for Radioisotope Thermoelectric Generator", Voyager Bulletin, no. 13, Link
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]
((Information |Description=((en|1=Diagram of the Multihundred-Watt Radioisotope Thermoelectric Generator units included on the Voyager spacecrafts. In this diagram, the heat source for generating electricity in the RTG is shown in packed form.)) |Source=
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