Aircraft Noise Prediction Program (ANOPP) Fan Noise Prediction for Small Engines
Author :
Publisher :
Page : 186 pages
File Size : 25,9 MB
Release : 1996
Category :
ISBN :
Aircraft Noise Prediction Program (Anopp) Fan Noise Prediction for Small Engines
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 186 pages
File Size : 26,42 MB
Release : 2018-07-17
Category :
ISBN : 9781722932886
Book Description
The Fan Noise Module of ANOPP is used to predict the broadband noise and pure tones for axial flow compressors or fans. The module, based on the method developed by M. F. Heidmann, uses empirical functions to predict fan noise spectra as a function of frequency and polar directivity. Previous studies have determined the need to modify the module to better correlate measurements of fan noise from engines in the 3000- to 6000-pound thrust class. Additional measurements made by AlliedSignal have confirmed the need to revise the ANOPP fan noise method for smaller engines. This report describes the revisions to the fan noise method which have been verified with measured data from three separate AlliedSignal fan engines. Comparisons of the revised prediction show a significant improvement in overall and spectral noise predictions. Hough, Joe W. and Weir, Donald S. Langley Research Center NOISE PREDICTION (AIRCRAFT); JET ENGINES; NOISE SPECTRA; NOISE REDUCTION; AERODYNAMIC NOISE; DATA ACQUISITION; TURBOFANS...
Aircraft Noise Prediction Program Theoretical Manual
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 276 pages
File Size : 44,52 MB
Release : 2018-07-23
Category :
ISBN : 9781723511417
Book Description
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. Weir, Donald S. and Jumper, Stephen J. and Burley, Casey L. and Golub, Robert A. Langley Research Center NASA-TM-83199-PT-4, L-16700-PT-4, NAS 1.15:83199-PT-4 RTOP 532-06-37-01...
Aircraft Noise Prediction Program User's Manual
Author : Ronnie E. Gillian
Publisher :
Page : 340 pages
File Size : 14,58 MB
Release : 1982
Category : Airplanes
ISBN :
Book Description
Validation of Aircraft Noise Prediction Program
Author :
Publisher :
Page : 86 pages
File Size : 23,35 MB
Release : 1979
Category :
ISBN :
Book Description
Aircraft Noise Prediction Program Validation
Author :
Publisher :
Page : 168 pages
File Size : 21,84 MB
Release : 1980
Category :
ISBN :
Book Description
Aircraft Noise Prediction Program
Author : W. E. Zorumski
Publisher :
Page : 204 pages
File Size : 13,38 MB
Release : 1982
Category : Airplanes
ISBN :
Book Description
Aircraft noise prediction theoretical methods are given. The prediction of data which affect noise generation and propagation is addressed. These data include the aircraft flight dynamics, the source noise parameters, and the propagation effects.
Research Needs in Aircraft Noise Prediction
Author : John P. Raney
Publisher :
Page : 44 pages
File Size : 50,30 MB
Release : 1975
Category :
ISBN :
Book Description
Aircraft Noise Prediction Program Theoretical Manual
Author : W. E. Zorumski
Publisher :
Page : 0 pages
File Size : 23,99 MB
Release : 1982
Category :
ISBN :
Book Description
Aircraft Noise Prediction Program Propeller Analysis System Ibm-PC Version User's Manual Version 2.0
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 236 pages
File Size : 14,14 MB
Release : 2018-07-23
Category :
ISBN : 9781723511219
Book Description
The IBM-PC version of the Aircraft Noise Prediction Program (ANOPP) Propeller Analysis System (PAS) is a set of computational programs for predicting the aerodynamics, performance, and noise of propellers. The ANOPP-PAS is a subset of a larger version of ANOPP which can be executed on CDC or VAX computers. This manual provides a description of the IBM-PC version of the ANOPP-PAS and its prediction capabilities, and instructions on how to use the system on an IBM-XT or IBM-AT personal computer. Sections within the manual document installation, system design, ANOPP-PAS usage, data entry preprocessors, and ANOPP-PAS functional modules and procedures. Appendices to the manual include a glossary of ANOPP terms and information on error diagnostics and recovery techniques. Nolan, Sandra K. Unspecified Center NASA-CR-181689, NAS 1.26:181689 NAS1-18000; RTOP 505-63-51-07...
