• Corpus ID: 54987310

Physics of Reverse Flow on Rotors at High Advance Ratios

@article{Hiremath2018PhysicsOR,
  title={Physics of Reverse Flow on Rotors at High Advance Ratios},
  author={Nandeesh V. Hiremath and Dhwanil P. Shukla and Narayanan M. Komerath},
  journal={arXiv: Fluid Dynamics},
  year={2018}
}
When a rotor blade encounters reverse flow in edgewise flight at high advance ratio, a strong vortical structure forms on the leeside of the sharp blade edge. This has unexpected effects on blade aerodynamics. A differential onset velocity gradient due to rotor rotation creates an envelope of reverse flow extending from the hub. A Sharp Edge Vortex (SEV) is observed at the geometric trailing edge, forming soon after the blade enters the retreating-blade side. The SEV grows radially inwards in… 

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