الوصفAEC-71-9131 SNAP-19 RADIOISOTOPE THERMOELECTRIC GENERATORS (RTG)in orbit for about 2 years, are being modified for probing the planet Jupiter in deep outer space. Modified SNAP-19 generators will be used for NASA’s Pioneer space probes of the planet Jupiter in 1972 and 1973. Mound laboratory is developing and fabricating the fuel capsules and radioisotopic heaters that will be used for men’s first scientific venture past Mars in the solar system. This photo shows the 4-inch-long Pioneer fuel capsule. Heat produced by the decay of plutonium-238 will be converted by a thermoelectric generator to power instrumentation aboard the unmanned spacecraft. The 1-thermal watt radioisotopic heaters will also be used to warm the hydrazine propellant. Credit: Mound Laboratory
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