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Crew Efficiency on First Exposure to Zero-Gravity (SKYCREW)
Research Area:
Behavior and performance
Species Studied
Scientific Name: Homo sapiens Species: Human

Soon after reaching orbit several crewmembers of Apollo flights, as well as Russian cosmonauts, have reported symptoms of malaise or stomach discomfort, occasionally reaching the point of vomiting. While these symptoms have always disappeared after a few days, they have generated some concern about the ability of crewmen to work efficiently in the first few days of a space mission. This was a particularly important consideration for the future Shuttle operations, since many flights were to be limited to about seven days in orbit. The objective of this experiment was to make a reasonably objective analysis of crew efficiency during the first few days in-flight. This was accomplished using an 'activation' schedule which was prepared preflight for each crew.

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Garriott OK and Doerre GL. Chapter 17: Crew Efficiency on First Exposure to Zero-Gravity. In: Johnston RS, Dietlein LF, eds. Biomedical Results from Skylab. Washington, DC: NASA Headquarters; 1977:155-162. NASA SP-377. [NTRS]

Adaptation, physiological
Space motion sickness (SMS)
Task performance and analysis
Decision making
Work schedule tolerance

Data Information
Data Availability
Archive is complete. Data sets are not publicly available but can be requested.
Data Sets+ Request data

Efficiency ratio

Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
Skylab 2 05/25/1973 06/22/1973 28 days
Skylab 3 07/28/1973 09/25/1973 59.5 days
Skylab 4 11/16/1973 02/08/1974 84 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Eric Gallagher
Institutional Support
National Aeronautics and Space Administration (NASA)
Hardware Items