Far fields

Wave propagation in anisotropic medium due to an oscillatory point source with application to unidirectional composites

James H. Williams, Jr., Elizabeth R. C. Marques, and Samson S. Lee.

Fan noise prediction system development: source/radiation field coupling and workstation conversion for the acoustic radiation code

H.D. Meyer.

New computational methods for the prediction and analysis of helicopter noise

Roger C. Strawn, Leonid Oliker, Rupak Biswas.

Ducted fan acoustic radiation including the effects of nonuniform mean flow and acoustic treatment

Walter Eversman, Indranil Danda Roy.

Computation of noise radiation from turbofans: a parametric study

M. Nallasamy.

Low speed, 2-D rotor/stator active noise control at the source demonstration: under contract NAS3-26618

John C. Simonich ... [et al.].

Investigation of the arcjet plume near field using electrostatic probes

John M. Sankovic.

An assessment of propeller aircraft noise reduction technology

F. Bruce Metzger.

Development and demonstration of an on-board mission planner for helicopters

Owen L. Deutsch, Mikund Desai.

Helicopter main-rotor speed effects on far-field acoustic levels

Arnold W. Mueller, Otis S. Childress, and Mark Hardesty.