NDLI: Tip vortex and wake characteristics of a counterrotating open rotor

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Tip vortex and wake characteristics of a counterrotating open rotor

Content Provider	NASA Technical Reports Server (NTRS)
Author	Wernet, Mark P. Van Zante, Dale E.
Copyright Year	2012
Description	One of the primary noise sources for Open Rotor systems is the interaction of the forward rotor tip vortex and blade wake with the aft rotor. NASA has collaborated with General Electric on the testing of a new generation of low noise, counterrotating Open Rotor systems. Three-dimensional particle image velocimetry measurements were acquired in the intra-rotor gap of the Historical Baseline blade set. The velocity measurements are of sufficient resolution to characterize the tip vortex size and trajectory as well as the rotor wake decay and turbulence character. The tip clearance vortex trajectory is compared to results from previously developed models. Forward rotor wake velocity profiles are shown. Results are presented in a form as to assist numerical modeling of Open Rotor system aerodynamics and acoustics.
File Size	10597923
Page Count	20
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20120018036
Archival Resource Key	ark:/13960/t0tr0wv0s
Language	English
Publisher Date	2012-07-29
Access Restriction	Open
Subject Keyword	Aerodynamics Turbulence Vortices Rotors Wakes Rotor Aerodynamics Flow Characteristics Acoustics Trajectories Noise Generators Velocity Distribution Velocity Measurement Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Presentation

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