Anthony M Blackner
Land Surveyors in Kirkland, WA
License number
Utah 167125-9925
Issued Date
Jan 1, 1911
Expiration Date
Dec 31, 1999
Category
Engineer/Land Surveyor
Type
Engineer in Training - Obsolete
Address
Address
Kirkland, WA
Professional information
Method And Apparatus For Reducing Airframe Aerosound
US Patent:
5749546, May 12, 1998
Filed:
Jul 10, 1995
Appl. No.:
8/501246
Inventors:
Anthony M. Blackner - Kirkland WA
Thomas A. Zierten - Bellevue WA
Thomas A. Zierten - Bellevue WA
Assignee:
The Boeing Company - Seattle WA
International Classification:
B64C 350
US Classification:
244215
Abstract:
A method and apparatus for reducing noise produced by the airframe of an airplane in flight. The present invention provides a smooth, continuous, arcuate surface, such as a rounded edge cap, for the lateral surface of any airplane flap exposed to fluid having relative motion with respect to the airplane. Tests indicate that a rounded flap edge cap made in accordance with the present invention is effective in attenuating noise levels in the middle and high frequency range, i. e. , between about 500 to about 10000 Hz.
Jet Engine And Method For Reducing Jet Engine Noise By Reducing Nacelle Boundary Layer Thickness
US Patent:
6094907, Aug 1, 2000
Filed:
Jun 5, 1996
Appl. No.:
8/658663
Inventors:
Anthony M. Blackner - Kirkland WA
Assignee:
The Boeing Company - Seattle WA
International Classification:
F02K 302
US Classification:
602261
Abstract:
A jet engine has a noise reduction system which reduces the boundary layer located on the outer surface of the nacelle. The noise reduction system includes a plurality of openings located in the outer surface of the nacelle which are in communication with a source of low pressure. The low pressure causes a reduction in the boundary layer at the openings so that resulting ambient air flow velocity near the nacelle surface is increased. This causes a reduction in the shearing between the secondary and ambient airflows thereby reducing the noise.