Aerojet Propulsion Remains Operational as Voyager 1 Approaches Interstellar Space
Voyager 1 and 2 were launched in 1977, and are the oldest operational spacecraft. At launch, each spacecraft carried two propulsion systems, a Delta-V system, including four 100 lbf and four 5 lbf monopropellant hydrazine thrusters made by Aerojet
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