The requirements, constraints, and design of NASA's next generation Aircraft NOise Prediction Program (ANOPP2) are introduced. Similar to its predecessor (ANOPP), ANOPP2 provides the U.S. Government with an independent aircraft system noise prediction capability that can be used as a stand-alone program or within larger trade studies that include performance, emissions, and fuel burn. The ANOPP2 framework is designed to facilitate the combination of acoustic approaches of varying fidelity for the analysis of noise from conventional and unconventional aircraft. ANOPP2 integrates noise prediction and propagation methods, including those found in ANOPP, into a unified system that is compatible for use within general aircraft analysis software. The design of the system is described in terms of its functionality and capability to perform predictions accounting for distributed sources, installation effects, and propagation through a non-uniform atmosphere including refraction and the influence of terrain. The philosophy of mixed fidelity noise prediction through the use of nested Ffowcs Williams and Hawkings surfaces is presented and specific issues associated with its implementation are identified. Demonstrations for a conventional twin-aisle and an unconventional hybrid wing body aircraft configuration are presented to show the feasibility and capabilities of the system. Isolated model-scale jet noise predictions are also presented using high-fidelity and reduced order models, further demonstrating ANOPP2's ability to provide predictions for model-scale test configurations.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Design of the Next Generation Aircraft Noise Prediction Program: ANOPP2


    Contributors:

    Conference:

    17th AIAA/CEAS Aeroacoustics Conference ; 2011 ; Portland, OR, United States


    Publication date :

    2011-06-06


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :




    Auralization Architectures for NASA?s Next Generation Aircraft Noise Prediction Program

    Rizzi, Stephen A. / Lopes, Leonard V. / Burley, Casey L. et al. | NTRS | 2013



    Aircraft Noise Prediction Program Validation

    B. N. Shivashankara | NTIS | 1980