Variable-Gravity Research Facility conceptualization and design study summary

It is proposed that three six-month missions be performed at different gravity levels (0.255, 0.39, and 0.64 g) with crews of three individuals to obtain the first approximation of the curves for physiological responses to different levels of gravity. The result data will permit preliminary evaluation of the appropriateness of artificial gravity as a countermeasure for the deconditioning that occurs in 0 g.