For interception of enemy ICBM's during boost phase NPO Energia developed a space based rocket interceptor (RP) similar to American 'Brilliant Pebble' systems. This had a mass of only 10 kg and was powered by small but high energy rocket engines that gave the vehicle the same characteristic velocity as boosters that put payloads into orbit. The miniature vehicles used advanced technology and new scientific solutions. The engines were powered by non-traditional non-cryogenic propellants with high strength materials used for the propellant tanks.
Total Mass: 10 kg.