NASA-TM-83199 PART 4
Aircraft noise prediction program theoretical manual: Rotorcraft System Noise Prediction System (ROTONET), part 4
Year: 1995
Abstract: This document describes the theoretical methods used in the rotorcraft noise prediction system (ROTONET), which is a part of the NASA Aircraft Noise Prediction Program (ANOPP). The ANOPP code consists of an executive, database manager, and prediction modules for jet engine, propeller, and rotor noise. The ROTONET subsystem contains modules for the prediction of rotor airloads and performance with momentum theory and prescribed wake aerodynamics, rotor tone noise with compact chordwise and full-surface solutions to the Ffowcs-Williams-Hawkings equations, semiempirical airfoil broadband noise, and turbulence ingestion broadband noise. Flight dynamics, atmosphere propagation, and noise metric calculations are covered in NASA TM-83199, Parts 1, 2, and 3.
Subject: AEROACOUSTICS
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NASA-TM-83199 PART 4
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contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
date accessioned | 2017-09-04T16:25:19Z | |
date available | 2017-09-04T16:25:19Z | |
date copyright | 01/01/1995 | |
date issued | 1995 | |
identifier other | TXHOEEAAAAAAAAAA.pdf | |
identifier uri | http://yse.yabesh.ir/std/handle/yse/88529 | |
description abstract | This document describes the theoretical methods used in the rotorcraft noise prediction system (ROTONET), which is a part of the NASA Aircraft Noise Prediction Program (ANOPP). The ANOPP code consists of an executive, database manager, and prediction modules for jet engine, propeller, and rotor noise. The ROTONET subsystem contains modules for the prediction of rotor airloads and performance with momentum theory and prescribed wake aerodynamics, rotor tone noise with compact chordwise and full-surface solutions to the Ffowcs-Williams-Hawkings equations, semiempirical airfoil broadband noise, and turbulence ingestion broadband noise. Flight dynamics, atmosphere propagation, and noise metric calculations are covered in NASA TM-83199, Parts 1, 2, and 3. | |
language | English | |
title | NASA-TM-83199 PART 4 | num |
title | Aircraft noise prediction program theoretical manual: Rotorcraft System Noise Prediction System (ROTONET), part 4 | en |
type | standard | |
page | 276 | |
status | Active | |
tree | NASA - National Aeronautics and Space Administration (NASA):;1995 | |
contenttype | fulltext | |
subject keywords | AEROACOUSTICS | |
subject keywords | AERODYNAMIC LOADS | |
subject keywords | AERODYNAMIC NOISE | |
subject keywords | AIRCRAFT NOISE | |
subject keywords | ATMOSPHERIC EFFECTS | |
subject keywords | BROADBAND | |
subject keywords | ENGINE NOISE | |
subject keywords | HELICOPTERS | |
subject keywords | MOMENTUM THEORY | |
subject keywords | NOISE INTENSITY | |
subject keywords | NOISE PREDICTION (AIRCRAFT) | |
subject keywords | PREDICTION ANALYSIS TECHNIQUES | |
subject keywords | ROTOR AERODYNAMICS | |
subject keywords | ROTOR DYNAMICS | |
subject keywords | SOUND PRESSURE | |
subject keywords | TIME DEPENDENCE | |
subject keywords | TURBULENT FLOW | |
subject keywords | USER MANUALS (COMPUTER PROGRAMS) | |
subject keywords | WAKES |