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Soyuz-14


Soyuz-15

 

Salyut-3 (Almaz OPS-2) space station

In 1974, the Soviet Union launched a space station publicly identified as Salyut-3. In reality, it was the second military laboratory within the Almaz project but disguised as a civilian Salyut series. After the end of the Cold War, it was revealed that Salyut-3 had carried a self-defense gun that fired in orbit.


almaz

Almaz OPS-2 station at a glance:

Spacecraft designation
Salyut-3 (public), Almaz OPS-2 (OPS No. 0101-2)
Launch date
1974 June 25, 01:38 Moscow Decree Time
Visiting vehicles
Soyuz-14, Soyuz-15 (failed to reach the station)
Deorbit date
1975 Jan. 25
Flight duration
213 days (Piloted 15 days)

OPS-2 (Salyut-3) space station

A two-day test mission of the Soyuz spacecraft, developed specifically for the Almaz program, preceded the launch of the OPS-2 station. The 7KT version of the Soyuz was launched without crew on May 27, 1974, and was announced as Kosmos-656. (INSIDER CONTENT) (52)

A month later, on June 25, 1974, after a night-long struggle on the launch pad with electrical problems in the interface between the station and its rocket, the OPS-2 space station, lifted off from a "left-hand" launch pad at Site 81 in Baikonur . It was announced as Salyut-3. (100) Official Soviet sources disclosed that the new station was equipped with an "electro-mechanical" attitude control system, or gyrodines; rotating solar arrays; an "improved" thermal control system, and that it featured separate areas for work and rest. (71) The first use of a water-recycling facilities, and of unmanned reentry capsules was also acknowledged. (2)

The post-Soviet sources (134) listed following payloads onboard OPS-2:

  • The Agat-1 photo-camera, with a focal length of 6,375 millimeters and a resolution better than 3 meters;
  • The OD-5 optical visor;
  • The POU panoramic device;
  • A topographical camera;
  • A star camera;
  • The Volga infrared camera with a resolution 100 meters.

Cosmonaut Pavel Popovich, who trained for the Almaz mission and later manned the station, recalled in an interview with the Novosti Kosmonavtiki magazine that the station carried 14 different cameras in all. (153)

The station was also equipped with a "self-defense" gun developed at a design bureau led by Nudelman. The weapon was installed in the front section of the station and in order to point it at the target crew had to change the attitude of the entire station. During ground test firing, the gun was able to split in half a metal container. At the same time, the firing caused considerable shaking of the station itself, therefore in-orbit tests of the weapon during manned operations were ruled out.

The Soyuz-14 mission

pad

On July 3, 1974, the Soyuz-14 mission carried what was announced as an expedition to the newly launched Salyut-3 space station. In fact, it was a specialized military team heading to the Almaz OPS-2 orbital observation outpost publicly camouflaged behind the civilian space station program. For the first time, a piloted military orbiter armed with a self-defense gun and an array of reconnaissance equipment operated in space.

The Soyuz-15 mission

Soyuz-15

On Aug. 26, 1974, the USSR launched the second expedition to the Almaz OPS-2 military space station. However, commander Gennady Sarafanov and flight engineer Lev Demin failed to dock their Soyuz-15 spacecraft to the outpost, narrowly avoiding a high-speed collision. The crew then urgently headed home after just two days in orbit.

The OPS-2's pilotless mission

almaz

Due to lengthy modifications in the wake of Soyuz-15's docking problems in August 1974, no further expeditions to the Salyut-3 could be staged and on Sept. 19, 1974, the official Soviet press gave the first hint that Salyut-3 operations were to be wrapped up by September 23.

On September 30, another announcement confirmed the end of operations aboard Salyut-3, but it also disclosed that on Sept. 23, 1974, "the recoverable module containing materials or research and experiments saw separated from Salyut-3. The motors were activated at the assigned time and the module began its descent to Earth. The motors were discarded before entry into dense layers of the atmosphere and the parachute system was activated at an altitude of 8.4 kilometers. The recoverable apparatus landed at the assigned area of the Soviet Union." The report obviously referred to the KSI capsule designed to return exposed film from the station's reconnaissance equipment.

On Dec. 25, 1974, just a day before the launch of the Salyut-4 space station, a routine press communique on the status of Salyut-3 said that the mission of the space station was approaching an end after an extended flight period. (50)

The station was deorbited on Jan. 24, 1975, over the Pacific Ocean.

According to official Soviet sources, the seven-month flight of the Salyut-3 exceeded more han twice the originally planned flight duration. Soviet publications also disclosed that the Salyut-3 was the first space station to maintain constant orientation relative to the Earth surface. To achieve that, as many as 500,000 firings of the attitude control thrusters had been performed. (152) This fact also hinted to Western observers that the Salyut-3 had perhaps carried out a reconnaissance mission.

Years later it was revealed that shortly before deorbiting OPS-2, ground controllers commanded the "self-defense" gun onboard the station to fire. The firings were conducted in the direction opposite to the station's velocity vector, in order to shorten the "orbital life" of the cannon's shells. A total of three firings were conducted during the OPS-2 mission. (72)

The article by Anatoly Zak; Last update: December 23, 2024

All rights reserved

insider content

Legend has it that when the Soviet government forced Chelomei to launch his Almaz space station under the name "Salyut" in order to hide the existence of the "second" space station program in the USSR, the angry chief-designer directed his staff to paint the name "Salyut-3" on the detachable part of the station. This still from film footage, shows name Salyut-3 painted on an interstage ring, which is jettisoned after the station reaches the orbit. Credit: NPO Mash


MIK

A fully assembled payload section of the Almaz OPS-2 space station before its integration with the launch vehicle.


ops

OPS-2 station is being integrated with the launch vehicle.


pad

UR-500K rocket with the OPS-2 station on the launch pad in Tyuratam.


A Sh'it-1 (shield) "self-defense" cannon developed for the Almaz station. Credit: NPO Mash


docking

The fully assembled version of the S'hit-1 cannon was displayed at NPO Mashinostroenia demo room during a visit of the Russian Defense Minister Sergei Shoigu at the beginning of 2021. Click to enlarge. Credit: Russian Ministry of Defense


launch

The OPS-2 (Salyut-3) space station rockets into orbit at 03:38 local time on June 25, 1974. Credit: NPO Mash