An Analysis of the Inertial Properties and Performance of the Astronaut Maneuvering System

Item

Title
An Analysis of the Inertial Properties and Performance of the Astronaut Maneuvering System
Date
1965
Index Abstract
Not Available
Photo Quality
Not Needed
Report Number
AMRL TR 65-216
Creator
Tieber, Julies A.
Lindemuth, Robert W.
Corporate Author
United States Air Force Institute of Technology
Laboratory
Aerospace Medical Research Laboratories
Extent
234
Identifier
AD0622443
Access Rights
Dsitribution of this document is unlimited
Distribution Classification
1
Contract
Laboratory Research - No Contract
DoD Project
7184
DoD Task
718405
DTIC Record Exists
No
Distribution Conflict
No
Abstract
The inertial properties and performance parameters of an Astronaut Maneuvering System are determined by mathematical modeling. The inertial properties of an astronaut in a space suit are determined by modification of an existing mathematical model of the human body to include a mathematical model of a space suit. The space suit model is based on measurements of suited subjects and suit weight regression equations. The inertial properties determined are: (1) location of the system center of mass, (2) moments and products of inertia about the axes through the center of mass, (3) the principal moments of inertia, and (4) the orientation of the principal axes. These properties are used in a computer program developed to analyze the performance of the AMS by simulating the operation of the MMU in the system. Performance parameters determined are: linear and angular acceleration, velocity, and displacement, and fuels consumption. Maneuver and propulsion efficiency factors are defined and calculated. The efficiency factors indicate loss of system effieciency due to inertial cross-coupling, misalignment of center of mass and thrust line, and intermittent thruster operation. The efficiency factors are used to compare system performance during various maneuvers.
Report Availability
Full text available by request
Date Issued
1965-12
Provenance
RAF Centre of Aviation Medicine
Type
report