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Prediction of noise constrained optimum takeoff proceduresAn optimization method is used to predict safe, maximum-performance takeoff procedures which satisfy noise constraints at multiple observer locations. The takeoff flight is represented by two-degree-of-freedom dynamical equations with aircraft angle-of-attack and engine power setting as control functions. The engine thrust, mass flow and noise source parameters are assumed to be given functions of the engine power setting and aircraft Mach number. Effective Perceived Noise Levels at the observers are treated as functionals of the control functions. The method is demonstrated by applying it to an Advanced Supersonic Transport aircraft design. The results indicate that automated takeoff procedures (continuously varying controls) can be used to significantly reduce community and certification noise without jeopardizing safety or degrading performance.
Document ID
19800051826
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Padula, S. L.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 10, 2013
Publication Date
June 1, 1980
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 80-1055
Meeting Information
Meeting: Aeroacoustics Conference
Location: Hartford, CT
Start Date: June 4, 1980
End Date: June 6, 1980
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
80A35996
Distribution Limits
Public
Copyright
Other

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