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Development of an analytical technique for the optimization of jet engine and duct acoustic linersA new method was developed for the calculation of optimum constant admittance solutions for the minimization of the sound radiated from an arbitrary axisymmetric body. This method utilizes both the integral equation technique used in the calculation of the optimum non-constant admittance liners and the independent solution generated as a by product of these calculations. The results generated by both these methods are presented for three duct geometries: (1) a straight duct; (2) the QCSEE inlet; and (3) the QCSEE inlet less its centerbody.
Document ID
19820017380
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Zinn, B. T. (Georgia Inst. of Tech. Atlanta, GA, United States)
Meyer, W. L. (Georgia Inst. of Tech. Atlanta, GA, United States)
Date Acquired
September 4, 2013
Publication Date
February 28, 1982
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA-CR-169002
NAS 1.26:169002
Accession Number
82N25256
Funding Number(s)
CONTRACT_GRANT: NAG1-133
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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