The Plasma-A satellites were technological test spacecraft to test out new systems for the US-AM RORSATs. It was based on the US-A RORSAT bus, but was fitted with the new Topaz nuclear rector, which used thermo-emission conversion method to convert heat to electricity. Topaz provided over 10 kW of power and had long endurance and storage in a radiation-safe orbit.
Plazma-A did not have the radar of the US-A spacecraft, but tested a number of other systems:
The Plasma-A satellites carried instruments to map the magnetic field of the earth for the development of a magnetic navigation system.
|Type / Application:||Technology, nuclear reactor|
|Propulsion:||6 × SPT-70 Stationary Plasma Thrusters|
|Power:||Topaz-1 nuclear reactor|
|Orbit:||774 km × 803 km, 65.0°|
|Kosmos 1818 (Plasma-A #1)||1987-011A||01.02.1987||Ba LC-90||Tsiklon-2|
|Kosmos 1867 (Plasma-A #2)||1987-060A||10.07.1987||Ba LC-90||Tsiklon-2|