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Rotorcraft Blade-Vortex Interaction ControllerBlade-vortex interaction noises, sometimes referred to as 'blade slap', are avoided by increasing the absolute value of inflow to the rotor system of a rotorcraft. This is accomplished by creating a drag force which causes the angle of the tip-path plane of the rotor system to become more negative or more positive.
Document ID
19960033297
Acquisition Source
Ames Research Center
Document Type
Other - Patent
Authors
Schmitz, Fredric H. (NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 17, 2013
Publication Date
December 26, 1995
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
Patent Application Number: US-Patent-Appl-SN-439838
Patent Application Number: US-Patent-Appl-SN-972790
Patent Number: NASA-Case-ARC-11992-2
Patent Number: US-Patent-5,478,029
Accession Number
96N30095
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-ARC-11992-2|US-Patent-5,478,029
Patent Application
US-Patent-Appl-SN-439838|US-Patent-Appl-SN-972790

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