RDS-9
= RDS-9
{wiki=RDS-9}
RDS-9 refers to a specific type of nuclear weapon developed by the Soviet Union. It is part of the RDS (Russian: Реактивный Двигатель Степеней, "jet engine of stages") family of nuclear devices. The RDS-9 was designed in the 1950s and was notable for being a variant of the earlier RDS-1, providing an increased yield and efficiency.