Experiments in Fluids

, Volume 7, Issue 1, pp 56–60 | Cite as

A non-integral, axial-force measuring element

  • M. Ringel
  • D. Levin
  • A. Seginer
Originals

Abstract

A new approach to the measurement of the axial force is presented. A non-integral axial-force measuring element, housed within the wind-tunnel model, avoids the interactions that are caused by nonlinear elastic phenomena characteristic of integral balances. The new design overcomes other problems, such as friction, misalignment and relative motion between metric elements, that plagued previous attempts at separate measurement of the axial force. Calibration and test results prove the ability of the new approach to duplicate and even surpass the results of much more complicated and expensive integral balances. The advantages of the new design make it the best known solution for particular measurement problems.

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References

  1. Gorlin, S. M.; Slezinger, I. I. 1964: Wind tunnels and their instrumentation (translated from Russian). Israel Program for Scientific TranslationGoogle Scholar
  2. Richard, R. D.; Brosh, A.; Seginer, A. 1981: A parametric investigation of and elastic parallelogram for the measurement of aerodynamic drag. Proc. 23rd Israel ann. conf. on aviation and astronautics, Tel Aviv and Haifa, Israel, p. 217Google Scholar
  3. Ringel, M.; Levin, D. 1985: Improved drag element for wind-tunnel sting balances. J. Aircr. 22, 979–982Google Scholar
  4. Ringel, M.; Levin, D.; Seginer, A. 1985: Nonlinear calibration of integral wind-tunnel balances. ICIASF rec. Stanford University, CA, USAGoogle Scholar
  5. Valk, H.; van der Zwaan, J. H. 1961: A review of measurements on AGARD calibration model B in the transonic speed range. AGARDOgraph no. 64Google Scholar
  6. Whitfield, E. E. 1977: AGARD wind tunnel test data. “Unpublished Lockheed data”Google Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • M. Ringel
    • 1
  • D. Levin
    • 1
  • A. Seginer
    • 1
  1. 1.Aeronautical Research CenterTechnion-Israel Institute of TechnologyHaifaIsrael

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