TY - GEN
T1 - Linear unsteady aerodynamic models from wind tunnel measurements
AU - Brunton, Steven L.
AU - Rowley, Clarence Worth
AU - Williams, David R.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - Linear unsteady aerodynamic models are obtained for a NACA 0006 airfoil in a wind tunnel experiment at Reynolds number 65,000. A family of system identification maneuvers, based on a canonical step-up, hold maneuver, are specifically designed to extract relevant unsteady information from phase averaged wind tunnel measurements. Linear models based on these maneuvers are constructed using OKID/ERA for the case of pitching about α0 = 0° and α0 = 10°, as well as the case of pure plunge. It is shown that the identified models are more accurate than Theodorsen's model for all maneuvers, especially those at larger base angle of attack.
AB - Linear unsteady aerodynamic models are obtained for a NACA 0006 airfoil in a wind tunnel experiment at Reynolds number 65,000. A family of system identification maneuvers, based on a canonical step-up, hold maneuver, are specifically designed to extract relevant unsteady information from phase averaged wind tunnel measurements. Linear models based on these maneuvers are constructed using OKID/ERA for the case of pitching about α0 = 0° and α0 = 10°, as well as the case of pure plunge. It is shown that the identified models are more accurate than Theodorsen's model for all maneuvers, especially those at larger base angle of attack.
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M3 - Conference contribution
AN - SCOPUS:84884612401
SN - 9781600869471
T3 - 41st AIAA Fluid Dynamics Conference and Exhibit
BT - 41st AIAA Fluid Dynamics Conference and Exhibit
T2 - 41st AIAA Fluid Dynamics Conference and Exhibit 2011
Y2 - 27 June 2011 through 30 June 2011
ER -