An overview of dynamic test techniques used at NASA Langley Research Center on scale models to obtain a comprehensive flight dynamics characterization of aerospace vehicles is presented. Dynamic test techniques have been used at Langley Research Center since the 1920s. This paper will provide a partial overview of the current techniques available at Langley Research Center. The paper will discuss the dynamic scaling necessary to address the often hard-to-achieve similitude requirements for these techniques. Dynamic test techniques are categorized as captive, wind tunnel single degree-of-freedom and free-flying, and outside free-flying. The test facilities, technique specifications, data reduction, issues and future work are presented for each technique. The battery of tests conducted using the Blended Wing Body aircraft serves to illustrate how the techniques, when used together, are capable of characterizing the flight dynamics of a vehicle over a large range of critical flight conditions.
Overview of Dynamic Test Techniques for Flight Dynamics Research at NASA LaRC (Invited)
2006
34 pages
Report
Keine Angabe
Englisch
Fluid Mechanics , Aerodynamics , Dynamic tests , Scale models , General overviews , Aerospace vehicles , Wind tunnel tests , Blended-wing-body configurations , Degrees of freedom , Strouhal number , Forced vibration , Data reduction , Subsonic flow , Free flight , Dynamic response , Cockpits , Pilotless aircraft
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