Communication Dynamics between Crew and Mission Control Center in Simulated Isolation Experiments of 120 and 240 Days (Projects SIRIUS-19 and SIRIUS-21)

The observations of communicative behavior in the 120- and 240-day isolation studies enrich the long experience of content analysis of communications within the closed system of crew and Mission Control Center (MCC) in isolation experiments simulating spaceflight conditions. The data confirm the previously established relationship between workload and features of crew communication with MCC. In addition, the paper describes how mission duration, crew training and cohesion influence on the structure of communication.