A microprocessor-based internal strain-gage balance monitor has been developed for use with wind tunnel data systems to increase data quality and balance life. The hostile environments encountered in wind tunnel testing of aircraft and missile models subject the associated test support hardware to severe fatigue resulting from cyclic loadings. Algorithms derived from the analysis of balance materials and construction are used by the microprocessor to maximize the test operating envelope for a desired balance using combinations of static and dynamic loadings. Near-real-time analysis of static and dynamic balance loadings provides automatic protection through interaction with the automated model attitude control system. High process visibility allows immediate analysis of the trade-off of increased operating range versus the expected balance life. A histogram of balance loads is recorded to aid in stress analysis and balance life prediction.
Optimization of tunnel operating envelope by automatic balance protection
Eine elektronische Trimmeinrichtung fuer Systeme, die in Windkanaelen geprueft werden
Instrumentation in the aerospace industry ; 1 ; 137-148
1981
12 Seiten, 13 Bilder, 3 Quellen
Aufsatz (Konferenz)
Englisch
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