Launch Success
Liftoff Time (GMT)
10:20:00
Wednesday May 19, 1971
Cosmos 421 is a satellite of the DS-P1 constellation. The satellites of the latter are used to test different systems for future Soviet military satellites. It will test mainly new methods of communication with the ground, new radar systems and modes of power supply by nuclear battery.
Low Earth Orbit
1 Payload
325 kilograms
Manufacturer
OKB-586Rocket
Height: 29.59m
Payload to Orbit
LEO: 400 kg
GTO: 0 kg
Liftoff Thrust
636 Kilonewtons
Fairing
Diameter: 1.65m
Height: 2.99m
Stages
2
76th
Mission
5th
Mission of 1971
579th
Mission
32nd
Mission of 1971
48th
Orbital launch attempt