From: Don M <dmaddox1@h...>
Date: Mon, 1 Nov 2004 11:12:27 -0600
Subject: BIOSUIT
Looked interesting........) Quantified astronaut task performance will lead to enhanced training, more efficient crew operations, and optimized mission planning. In order to systematically address the relationships between the astronaut, tasks to be accomplished, and environment, analytical models were developed in conjunction with pressurized space suit experiments and state of the art robotic technology. A joint angle and torque database was compiled for the Extravehicular Mobility Unit (EMU space suit), with a novel measurement technique using both human test subjects and an instrumented robot. Using data collected in the experiment, a mathematical hysteresis modeling technique was used to predict EMU joint torques from joint angular positions. The hysteresis model was then applied to extravehicular activity (EVA) operations by mapping out the reach and work envelopes for the EMU. Suited astronaut range of motion limits and locomotion were also explored, yielding quantifiable results about the limitations astronauts would face if the current EMU, or an EMU-like suit, was used for a planetary exploration mission. http://mvl.mit.edu/EVA/biosuit.html