A Comparison of Methods for Measurement of Pressure in Hydraulic Lines

Abstract

This presentation summarizes a study characterizing strain gages and pressure transducers used to measure the fluid pressure within aircraft hydraulic lines. A series of laboratory calibrations and finite element analyses was performed to demonstrate the quality of data from both pressure transducers and strain gages under variations in both temperature and external strains on the hydraulic lines. Strain gages showed a marked susceptibility to external strains on hydraulic lines, and wide variations in susceptibility to temperature changes. Pressure transducers were found to be relatively immune to both conditions. It is recommended that strain gages be used for trend data only.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADA378010

Entities

People

  • Andrew Chorney
  • Susan Sprague

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Climate Change
  • Compression
  • Experimental Data
  • Finite Element Analysis
  • Flight Testing
  • High Temperature
  • Hydraulic Fluids
  • Internal Pressure
  • Load Cells
  • Materials
  • Measurement
  • Normal Distribution
  • Pressure Measurement
  • Pressure Transducers
  • Static Loads
  • Strain Gages

Readers

  • Electrical Engineering
  • Geodesy
  • Materials Science (Mechanical Engineering).