Zenit-4M / Rotor [GDK]
Official name COSMOS 471
Alternative name Cosmos-471
Cospar ID 1972-001A
Norad ID 5764
Launch date 1972-01-12
Launch site TTMTR
Launch vehicle Voskhod
Country/Organization USSR
Type application Reconnaissance, photo (film return type)
Operator GRU
RCS size UNKNOWN
Decay date 1972-01-25
Shape Sphere + Cyl
Mass (kg) 6243.81
Diameter (m) 2.4
Height (m) 6.49
Span (m^2) 6.49
Lifetime 13 days
Contractors TsSKB
Equipment Ftor-6 camera package
Propulsion 11D82M; S5.120 (maneuver module)
Configuration Zenit bus
Power Batteries

The soviet Zenit-4M (Rotor, 11F691) was an improved version of the Zenit-4 high resolution reconnaissance satellite and was part of the Vostok-based Zenit-family.

The satellites consisted of the Vostok-based service and reentry modules. The spherical reentry module returned both the cameras and the film to earth at the end of the mission. This version replaced the Ftor-4 camera system with the improved Ftor-6 camera. Additionaly they were the first series to incorporate the reignitable maneuvering module on top of the return capsule. Reportedly they also featured an thermal protection screen on the service module, a thermal baffle for the optics and aerodynamic stabilizers to protect them from atmospheric molecular heating during their very low apogee passes. They were designed for flights durations of 13 days.

These satellites operated typically from 65° inclination orbits with an initial altitude of 203-290 km. During the mission, they maneuvered to a low perigee orbit of 178-312 km altitude. Also missions with inclinations of 51.6°, 72.8° and 81.3° were flown.

Satellite COSPAR Date LS Launch Vehicle Remarks
COSMOS 251 1968-096A 1968-10-31 TTMTR Voskhod
COSMOS 264 1969-008A 1969-01-23 TTMTR Voskhod
COSMOS 280 1969-040A 1969-04-23 TTMTR Voskhod
COSMOS 333 1970-030A 1970-04-15 PKMTR Voskhod
COSMOS 360 1970-068A 1970-08-29 TTMTR Voskhod
COSMOS 361 1970-071A 1970-09-08 PKMTR Voskhod
COSMOS 370 1970-082A 1970-10-09 TTMTR Voskhod
COSMOS 376 1970-092A 1970-10-30 PKMTR Voskhod
COSMOS 386 1970-110A 1970-12-15 TTMTR Voskhod
COSMOS 390 1971-001A 1971-01-12 TTMTR Voskhod
COSMOS 396 1971-014A 1971-02-18 PKMTR Voskhod
COSMOS 399 1971-017A 1971-03-03 TTMTR Voskhod
COSMOS 401 1971-023A 1971-03-27 PKMTR Voskhod
COSMOS 406 1971-029A 1971-04-14 PKMTR Voskhod
COSMOS 420 1971-043A 1971-05-18 TTMTR Voskhod
COSMOS 424 1971-048A 1971-05-28 PKMTR Voskhod
COSMOS 429 1971-061A 1971-07-20 TTMTR Voskhod
COSMOS 430 1971-062A 1971-07-23 PKMTR Voskhod
COSMOS 432 1971-066A 1971-08-05 TTMTR Voskhod
COSMOS 441 1971-081A 1971-09-28 TTMTR Voskhod
COSMOS 442 1971-084A 1971-09-29 PKMTR Voskhod
COSMOS 452 1971-088A 1971-10-14 TTMTR Voskhod
COSMOS 454 1971-094A 1971-11-02 PKMTR Voskhod
COSMOS 456 1971-098A 1971-11-19 PKMTR Voskhod
COSMOS 463 1971-107A 1971-12-06 TTMTR Voskhod
COSMOS 464 1971-108A 1971-12-10 PKMTR Voskhod
COSMOS 466 1971-112A 1971-12-16 TTMTR Voskhod
COSMOS 471 1972-001A 1972-01-12 TTMTR Voskhod
COSMOS 474 1972-008A 1972-02-16 TTMTR Voskhod
COSMOS 478 1972-015A 1972-03-15 PKMTR Voskhod
COSMOS 483 1972-024A 1972-04-03 PKMTR Voskhod
COSMOS 486 1972-030A 1972-04-14 PKMTR Voskhod
COSMOS 491 1972-038A 1972-05-25 TTMTR Voskhod
COSMOS 492 1972-040A 1972-06-09 TTMTR Voskhod
COSMOS 495 1972-044A 1972-06-23 PKMTR Voskhod
COSMOS 499 1972-051A 1972-07-06 TTMTR Voskhod
COSMOS 503 1972-056A 1972-07-19 PKMTR Voskhod
COSMOS 513 1972-060A 1972-08-02 TTMTR Voskhod
COSMOS 519 1972-071A 1972-09-16 TTMTR Voskhod
COSMOS 522 1972-077A 1972-10-04 PKMTR Voskhod
COSMOS 538 1972-099A 1972-12-14 PKMTR Voskhod
COSMOS 543 1973-002A 1973-01-11 TTMTR Voskhod
COSMOS 548 1973-008A 1973-02-08 PKMTR Voskhod
COSMOS 551 1973-012A 1973-03-06 TTMTR Voskhod
COSMOS 560 1973-031A 1973-05-23 PKMTR Voskhod
COSMOS 563 1973-036A 1973-06-06 PKMTR Voskhod
COSMOS 572 1973-038A 1973-06-10 TTMTR Voskhod
COSMOS 577 1973-048A 1973-07-25 PKMTR Voskhod
COSMOS 579 1973-055A 1973-08-21 PKMTR Voskhod
COSMOS 581 1973-059A 1973-08-24 TTMTR Voskhod
COSMOS 584 1973-063A 1973-09-06 PKMTR Voskhod
COSMOS 598 1973-072A 1973-10-10 PKMTR Voskhod
COSMOS 600 1973-074A 1973-10-16 PKMTR Voskhod
COSMOS 603 1973-079A 1973-10-27 PKMTR Voskhod
COSMOS 609 1973-092A 1973-11-21 TTMTR Voskhod
COSMOS 632 1974-006A 1974-02-12 TTMTR Voskhod
COSMOS 667 1974-057A 1974-07-25 TTMTR Voskhod