Engineering:Soyuz 38

Short description: 1980 Soviet human spaceflight mission to the Salyut 6 space station

Soyuz 38

Soviet postage stamp commemorating the Soyuz 38 mission
COSPAR ID	1980-075A
SATCAT no.	11977
Mission duration	7 days, 20 hours, 43 minutes, 24 seconds
Orbits completed	124
Spacecraft properties
Spacecraft type	Soyuz 7K-T
Manufacturer	NPO Energia
Launch mass	6,800 kilograms (15,000 lb)
Crew
Crew size	2
Members	Yuri Romanenko Arnaldo Tamayo Méndez
Callsign	Taimyr
Start of mission
Launch date	September 18, 1980, 19:11:03 (1980-09-18UTC19:11:03Z) UTC
Rocket	Soyuz-U
Launch site	Baikonur 1/5
End of mission
Landing date	September 26, 1980, 15:54:27 (1980-09-26UTC15:54:28Z) UTC
Landing site	175 km SE of Dzhezkazgan
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	199.7 kilometres (124.1 mi)
Apogee altitude	273.5 kilometres (169.9 mi)
Inclination	51.63 degrees
Period	88.194 minutes
Docking with Salyut 6
Soyuz programme (Crewed missions)

Soyuz 38 was a human spaceflight mission conducted by the Soviet Union during September, 1980. The Soyuz spacecraft brought two visiting crew members to the Salyut 6 space station, one of whom was an Intercosmos cosmonaut from Cuba.

Crew

Position	Crew
Commander	Yuri Romanenko Second spaceflight
Research Cosmonaut	Arnaldo Tamayo Méndez Only spaceflight

Backup crew

Position	Crew
Commander	Yevgeni Khrunov
Research Cosmonaut	José Armando López Falcón

Mission parameters

• Mass: 6800 kg
• Perigee: 199.7 km
• Apogee: 273.5 km
• Inclination: 51.63°
• Period: 88.194 minutes

Mission highlights

12th expedition to Salyut 6. 7th international crew. Carried Intercosmos cosmonaut from Cuba. The Soyuz 38 docking occurred in darkness. As the spacecraft approached Salyut 6, the crew on the space station could see only its “headlights.” Ryumin filmed ignition and operation of the transport's main engine. Arnaldo Tamayo Méndez of Cuba and Soviet cosmonaut Yuri Romanenko docked without incident.

The purpose of the Soyuz 38 mission was to carry out nine experiments. They stimulated different areas of the brain to further understand the electrical activity in our brain. This was done using a customized helmet for each cosmonaut with silver electrodes and a tape recorder. The cosmonauts also wore special shoes to study the structure and motion of feet changes during weightlessness. They also collaborated with the Cuban Institute of Endocrinology and Metabolic Diseases to examine blood and urine samples throughout the entire launch, stay, and return to explore the psychological stress from preparation and working long hours under constant weightlessness. Another experiment they conducted was centered around studying changes in the levels of skeletal muscle structure. They used a Cuban made instrument to assess the adipose tissue and the stimulation of body fat. There was also a study on blood circulation, which sought to determine the impact weightlessness has on the human circulatory system. Tests had been carried out in previous flights and were repeated during this mission using a Chibis suit, a below-the-waist reduced-pressure device. Crew members completed exercise protocols wearing the Chibis to provide gravity-simulating stress to the body's cardiovascular/circulatory system and re-establishing the body's orthostatic tolerance after extended periods of microgravity. Negative pressure on the legs causes blood to accumulate in the lower extremities, which is the case in a gravity environment. Orthostatic intolerance has been a frequent complaint in humans returning from long-duration space flights. The other experiments attempted to study how cell division, the immune system, concentrations of antibodies and other proteins and minerals were affected after prolonged exposure to a weightless environment. This included measurements into the amount and rate at which humans lost water, fat, and other minerals.The cosmonauts also studied the growth of a single crystal of sucrose in the same environment.

See also

• List of human spaceflights to Salyut space stations
• List of Salyut expeditions

External links

• Soyuz 38 – NSSDC Id: 1980-075A