COMBINED PITCH-UP AND ROTATION: PITCH RATE VARIATION
Submitted by mab509 on Fri, 2014-02-28 13:42
Simultaneous Pitch-Up and Rotation Maneuvers Effect of Pitch Rate Variation: The present investigation focusses on the detailed flow structure along a low aspect ratio wing undergoing combined pitch-up and rotation for a range of extreme values of reduced pitch-rate. Quantitative imaging is employed to characterize the detailed three-dimensional flow structure.
Principal Investigators: M. Bross
Images of combined pitching and rotating wings at three reduced pitch rates are shown above. Transparent iso-Q surfaces for reduced pitch rates K = 0.098, 0.196, and 0.393 are displayed at the time corresponding to the cessation of the pitch-up maneuver. In each case stable and coherent vortical structures are observed along the leading-edge, tip, and root regions. The effect of increasing K displayed in the above images is to decrease the scale and size of the vortical structures along the leading-edge, tip, root regions.
