Helicopter model rotor-blade vortex interaction impulsive noise : scalability and parametric variations /

Acoustic data taken in the anechoic Deutsch-Niederlaendischer Windkanal (DNW) have documented the blade-vortex interaction (BVI) impulsive noise radiated from a 1/7-scale model main rotor of the AH-1 series helicopter.

Bibliographic Details
Corporate Authors:	Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt, Army Research and Technology Laboratories (U.S.), Ames Research Center
Other Authors:	Splettstoesser, W. R.
Format:	Government Document Microform Book
Language:	English
Published:	Moffett Field, Calif. : St. Louis, Mo. : National Aeronautics and Space Administration, Ames Research Center ; United States Army Aviation Systems Command, [1984]
Series:	NASA technical memorandum ; 86007.
Subjects:	Helicopters > Noise. Rotors (Helicopters) > Analysis. Blade slap noise. Blade-vortex interaction. Helicopters. Rotor blades (Turbomachinery) Vortices.
Online Access:	https://purl.fdlp.gov/GPO/LPS101194

Description
Summary:	Acoustic data taken in the anechoic Deutsch-Niederlaendischer Windkanal (DNW) have documented the blade-vortex interaction (BVI) impulsive noise radiated from a 1/7-scale model main rotor of the AH-1 series helicopter.
Item Description:	"Report date December 1984." Microform.
Physical Description:	ii, 28 pages : illustrations Also available via Internet from the NTRS web site. Address as of 09/02/08: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19850008517%5F1985008517.pdf ; current access is available via PURL.