LIBRARIES Aeroelastic Studies on a High Aspect Ratio Wing

A high aspect ratio (10.56) composite wing was designed and fabricated in order to verify a new analysis code developed to predict dynamic behavior of high-aspect-ratio wings. The chosen wing design was manufactured and tested (both bench-top and wind tunnel testing), and its dynamic behavior was characterized. Strain gauges and accelerometers were embed-ded within the wing at various distances along the span to record wing natural frequency information during bench-top 'tap ' testing, and frequency changes as a function of wind speed and root angle of attack during wind tunnel testing. Bench-top natural frequencies and mode shapes for the 1St and 2nd Bending, 1 st Chordwise Bending, and 1 st Torsion modes are in good agreement with the analytical model. Mode shapes with frequencies exceeding 100 Hz were not considered. Within the tunnel, the wing was studies at 10, 20, and 50 root angles of attack. The 2 ' root angle of attack configuration was flown to the flutter point b