Errors in Measurement of +Gz Acceleration Tolerance

Abstract

Most acceleration studies estimate a subject's G-level tolerance by taking only one determination (test) for a given condition. The purpose of this study was to examine the error structure and reliability of an individual's acceleration tolerance and to provide design considerations for future experimentation. A hierarchical (nested) design was used to estimate the source of variation in measuring G-level tolerance. Six males rode relaxed in the USAF School of Aerospace Medicine human-use centrifuge and were exposed to a 0.1g/s onset rate profile until greyout. Each subject was tested on three randomly selected days with three repeated determinations within a day. This design allowed for an estimate of both day-to-day and measurement error within a testing session.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1991
Accession Number
ADA233889

Entities

People

  • David A. Ludwig
  • Larry P. Krock

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Accuracy
  • Aerospace Medicine
  • Air Force
  • Analysis Of Variance
  • Availability
  • Aviation Medicine
  • Classification
  • High Resolution
  • Measurement
  • Reliability
  • Security
  • Standardization
  • Standards
  • Statistical Analysis
  • Statistics
  • Test And Evaluation
  • Training

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Computational Modeling and Simulation

Technology Areas

  • Space
  • Space - Orbital Debris