Gap DL-401: We do not know the extent to which multiple spaceflight hazards (e.g., spaceflight deconditioning, bone loss, radiation exposure, altered gravity) may interact to synergistically decrease injury tolerance for off-nominal dynamic landing loads, increasing risk to crew’s performance in mission-completing actions immediately after landing.
Last Published:  07/30/21 01:05:31 PM (Central)
Responsible Element: Human Factors and Behavioral Performance (HFBP)
Status: Open
Description

Spaceflight deconditioning has been shown to cause decrements in bone and muscle. How these decrements translate to injury risk due to dynamic loads is unknown. Currently deconditioning factors are used, but there is insufficient data available to assess the efficacy of these factors. Additionally, relative to exploration missions, new stressors will be faced, including radiation exposure and prolonged mission duration, and the potential additive or synergistic effects of these stressors also remain unknown. 

Relevant efforts through other disciplines will likely yield data to help further characterize this gap; for an example, the one-year mission complement of studies is seeking to characterize bone and muscle loss throughout 60-day, 6 month, and 12-month missions, including assessments just prior to landing. The integration of these and other efforts into predictive models, relative to injury risk and dynamic loads, will help to inform vehicle design for future missions.

Target for Closure
  1. Predictive models that take multiple spaceflight hazards and known changes in anthropometry of crew by length of mission into account when completing biodynamic analyses.
Mappings
Risk Risk of Injury from Dynamic Loads
You are here! Gap DL-401: We do not know the extent to which multiple spaceflight hazards (e.g., spaceflight deconditioning, bone loss, radiation exposure, altered gravity) may interact to synergistically decrease injury tolerance for off-nominal dynamic landing loads, increasing risk to crew’s performance in mission-completing actions immediately after landing.
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Multi-Disciplinary Research Plans

Documentation:
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