Mass Properties Test Procedure for Manikin Headforms and Helmet Systems

Abstract

The mathematical modeling and comparison of manikin headforms and helmet systems requires that the mass properties be accurately determined. The specific properties that must be known are the weight, center of gravity location, magnitudes of the principal moments of inertia and orientation of the principal axes. This data is compared to the specifications of a specific program and also provides insight into issues such as helmet comfort/fit, fatigue and head accelerations/neck forces during ejection or emergency landings. The Mass Properties (M.P.) System and associated software, provide a relatively simple method for measuring these mass properties. This document is intended for use by persons responsible for operating the M.P. System. Included in this report are theoretical calculations, a description of materials required, and step-by-step procedures for system set-up, calibration and determination of weight, center of gravity, and magnitude and orientation of the principal mass moments of inertia.... Mass properties, Helmets, Headform.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1992
Accession Number
ADA265654

Entities

People

  • David J. Zaborowski
  • Jeffrey M. Thornton

Organizations

  • Naval Air Warfare Center Aircraft Divison

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Aircrafts
  • Calibration
  • Center Of Gravity
  • Coordinate Systems
  • Databases
  • Gravity
  • Load Cells
  • Materials
  • Measurement
  • Measuring Instruments
  • Moment Of Inertia
  • Orientation (Direction)
  • Oxygen Masks
  • Standards
  • Test Fixtures
  • Test Methods
  • Three Dimensional

Readers

  • Control Systems Engineering.
  • Mechanical Engineering/Mechanics of Materials.
  • Military Engineering.