NEXT SPACEFLIGHT

Status

Success

Cosmos 664

Launch Time
Sat Jun 29, 1974 12:50 UTC

Rocket

Soyuz M
RVSN USSR
Status: Retired
Liftoff Thrust: 995 kN
Payload to LEO: 6,600 kg
Payload to GTO: 0 kg
Stages: 3
Strap-ons: 4
Rocket Height: 47.8 m
Fairing Diameter: 3.0 m
Fairing Height: 7.2 m

Mission Details

Cosmos 664

Zenit was a series of military photoreconnaissance satellites launched by the Soviet Union between 1961 and 1994.

The basic design of the Zenit satellites was similar to the Vostok manned spacecraft, sharing the return and service modules. It consisted of a spherical re-entry capsule 2.3 metres in diameter with a mass of around 2,400 kilograms. This capsule contained the camera system, its film, recovery beacons, parachutes and a destruct charge. In orbit, this was attached to a service module that contained batteries, electronic equipment, an orientation system and a liquid fuelled rocket engine that would slow the Zenit for re-entry, before the service module detached. The total length in orbit was around 5 metres.

Unlike the American Corona spacecraft, the return capsule carried both the film and the cameras and kept them in a temperature controlled pressurised environment. This simplified the design and engineering of the camera system but added considerably to the mass of the satellite. An advantage was that cameras could be reused.

Most Zenits flew in a slightly elliptical orbit with a perigee of around 200 kilometres (120 miles) and an apogee between 250 and 350 kilometres (160 and 220 miles); the missions usually lasted between 8 and 15 days.

Payloads: 1
Total Mass: 6,300.0 kg
Low Earth Orbit

Location

Site 43/4, Plesetsk Cosmodrome, Russia

Stats

1974

52nd orbital launch attempt

Soyuz M

6th mission
1st mission of 1974
4th successful mission
4th consecutive successful mission