NDLI: Maneuvering rotorcraft noise prediction: a new code for a new problem

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Maneuvering rotorcraft noise prediction: a new code for a new problem

Content Provider	NASA Technical Reports Server (NTRS)
Author	Brentner, Kenneth S. Jones, Henry E. Perez, Guillaume Bres, Guillaume A.
Copyright Year	2002
Description	This paper presents the unique aspects of the development of an entirely new maneuver noise prediction code called PSU-WOPWOP. The main focus of the code is the aeroacoustic aspects of the maneuver noise problem, when the aeromechanical input data are provided (namely aircraft and blade motion, blade airloads). The PSU-WOPWOP noise prediction capability was developed for rotors in steady and transient maneuvering flight. Featuring an object-oriented design, the code allows great flexibility for complex rotor configuration and motion (including multiple rotors and full aircraft motion). The relative locations and number of hinges, flexures, and body motions can be arbitrarily specified to match the any specific rotorcraft. An analysis of algorithm efficiency is performed for maneuver noise prediction along with a description of the tradeoffs made specifically for the maneuvering noise problem. Noise predictions for the main rotor of a rotorcraft in steady descent, transient (arrested) descent, hover and a mild "pop-up" maneuver are demonstrated.
File Size	807625
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20020024101
Archival Resource Key	ark:/13960/t6353m41z
Language	English
Publisher Date	2002-01-01
Access Restriction	Open
Subject Keyword	Acoustics Attitude Control Algorithms Rotor Blades Turbomachinery Acoustic Velocity Aircraft Maneuvers Rotary Wing Aircraft Object-oriented Programming Aerodynamic Characteristics Aeroacoustics Noise Prediction Computer Programs Aerodynamic Loads Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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