Subject Effects Exhibited in Human Posture in
Neutral Buoyancy and Parabolic Flight
Payload Systems Inc.
David L. Akin
University of Maryland Space Systems Laboratory
Copyright © 2002 Society of Automotive Engineers, Inc.
Neutral buoyancy (NB) and parabolic flight (PF) are the
only available human-scale three-dimensional
spaceflight simulation environments. As such, both
environments are used extensively for both research
and mission operations purposes despite a lack of
quantitative (or even qualitative) characterization of the
fidelity of either environment to the spacelfight analog.
The present study was undertaken as part of a larger
research effort to begin to build such characterizations.
Eight healthy adults (4 men and 4 women) were asked
to adopt relaxed postures while 'standing' in space