Author: Harvey H. HubbardPublisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 620
Book Description
Aeroacoustics of Flight Vehicles
Author: Harvey H. HubbardPublisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 620
Book Description
Scientific and Technical Aerospace Reports
Author: Advanced Turboprop Project
Author: Roy D. HagerPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 140
Book Description
A Users Guide for the NASA Anopp Propeller Analysis System
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722914516
Category :
Languages : en
Pages : 104
Book Description
The purpose of this report is to document improvements to the Propeller Analysis System of the Aircraft Noise Prediction Program (PAS-ANOPP) and to serve as a users guide. An overview of the functional modules and modifications made to the Propeller ANOPP system are described. Propeller noise predictions are made by executing a sequence of functional modules through the use of ANOPP control statements. The most commonly used ANOPP control statements are discussed with detailed examples demonstrating the use of each control statement. Originally, the Propeller Analysis System included the angle-of-attack only in the performance module. Recently, modifications have been made to also include angle-of-attack in the noise prediction module. A brief description of PAS prediction capabilities is presented which illustrate the input requirements necessary to run the code by way of ten templates. The purpose of the templates are to provide PAS users with complete examples which can be modified to serve their particular purposes. The examples include the use of different approximations in the computation of the noise and the effects of synchrophasing. Since modifications have been made to the original PAS-ANOPP, comparisons of the modified ANOPP and wind tunnel data are also included. Two appendices are attached at the end of this report which provide useful reference material. One appendix summarizes the PAS functional modules while the second provides a detailed discussion of the TABLE control statement. Nguygen, L. Cathy and Kelly, Jeffrey J. Langley Research Center APPLICATIONS PROGRAMS (COMPUTERS); PROPELLER NOISE; ANGLE OF ATTACK; NOISE PREDICTION (AIRCRAFT); WIND TUNNEL TESTS; TEMPLATES; SYNCHROPHASING; MODULES; USER MANUALS (COMPUTER PROGRAMS)...
NASA Contractor Report
Author: NASA Technical Memorandum
Author: Monthly Catalog of United States Government Publications
Author: ROTONET Primer
Author: The Shock and Vibration Digest
Author: Aeronautical Engineering
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 580
Book Description
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)