MEASUREMENTS AND RECORDING OF LOADING SPECTRUM OF GLASS-FIBER SAILPLANE WING USING THE STRAIN GAUGES

Authors

  • Piotr Lamers

Keywords:

Aerodynamics, Structures, Design, Safety

Abstract

The conservative method of designing the loading spectra for wing operational conditions depends on the intermediate measurement. The accelerations at the glider c.g. and wing c.g. have been measured, and on this basis the wing load and structure stresses have been evaluated. The data obtained have not adequately yielded the real values experienced by the spar and its fittings during the measurement, as regards the bending moment and in consequence the stress. The above error, especially when the quick variation of dynamic values is concerned, appears during the take-offs and landings. In the present investigation, the wing excitation has been measured instead of the response.

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Issue

Vol. 13 No. 4 (1989)

Section

Articles

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