Experimental Mechanics

, Volume 21, Issue 11, pp 401–407 | Cite as

Six-component strain-gage balances for large wind tunnels

This paper concerns the design, equipment, thermal-effects compensation and calibration of various multicomponent strain-gage balances used in the large subsonic and supersonic ONERA wind tunnels in France
  • Maurice Dubois


ONERA, the French Aerospace Research Institute, currently design, manufacture and calibrate the many dynamometers and balances, measuring one or several components, necessary for the tests in the large wind tunnels and other installations of its Modane-Avrieux and Le Fauga-Mauzac Centers, as well as those requested by external organizations, in France or abroad.

The number of dynamometric sensors realized since 1955 amounts to several hundreds. Their capacities range from 0.01 N to 1000 kN. Their precision is usually about 10−3, but may reach 10−4.

This paper describes the problems concerning the metallic architecture of the multicomponent balances, their strain-gage and electric equipment, thermal effects and their compensation it presents the general principles and the means used for the calibration of these balances.


Mechanical Engineer Fluid Dynamics Thermal Effect Wind Tunnel General Principle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



linear-sensitivity coefficients


quadratic-sensitivity coefficients


dynamometric sensitivity


Young’s modulus


gage factor


electric resistance


thermal coefficient of sensitivity


thermoelastic coefficient of support


thermal coefficient of gage factork


force component




bridge signal


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Copyright information

© Society for Experimental Mechanics, Inc. 1981

Authors and Affiliations

  • Maurice Dubois
    • 1
  1. 1.Office National d’Etudes et de Recherches Aerospatiales (ONERA)Modane-Avrieux Test/CenterFrance

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