Russell L Thomas

US Patent:

20120061510, Mar 15, 2012

Filed:

Aug 22, 2011

Appl. No.:

13/214469

Inventors:

Russell H. Thomas - Yorktown VA, US
Michael J. Czech - Issaquah WA, US
Ronen Elkoby - Los Angeles CA, US

Assignee:

U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC

International Classification:

B64D 27/02
B64D 27/26
B64D 33/04

US Classification:

244 54, 23926511

Abstract:

The aircraft exhaust engine nozzle system includes a fan nozzle to receive a fan flow from a fan disposed adjacent to an engine disposed above an airframe surface of the aircraft, a core nozzle disposed within the fan nozzle and receiving an engine core flow, and a pylon structure connected to the core nozzle and structurally attached with the airframe surface to secure the engine to the aircraft.

US Patent:

20120068011, Mar 22, 2012

Filed:

Aug 22, 2011

Appl. No.:

13/214481

Inventors:

Russell H. Thomas - Yorktown VA, US
Michael J. Czech - Issaquah WA, US

Assignee:

U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC

International Classification:

B64C 1/40
B67D 7/06
B64D 27/00

US Classification:

244 1 N, 222 1

Abstract:

An active pylon noise control system for an aircraft includes a pylon structure connecting an engine system with an airframe surface of the aircraft and having at least one aperture to supply a gas or fluid therethrough, an intake portion attached to the pylon structure to intake a gas or fluid, a regulator connected with the intake portion via a plurality of pipes, to regulate a pressure of the gas or fluid, a plenum chamber formed within the pylon structure and connected with the regulator, and configured to receive the gas or fluid as regulated by the regulator, and a plurality of injectors in communication with the plenum chamber to actively inject the gas or fluid through the plurality of apertures of the pylon structure.

US Patent:

56621361, Sep 2, 1997

Filed:

Sep 11, 1995

Appl. No.:

8/498489

Inventors:

Tadeusz M. Drzewiecki - Rockville MD
John B. Niemczuk - Kensington MD
Christopher R. Fuller - Norfolk VA
Russell H. Thomas - Hampton VA
Ricardo A. Burdisso - Blacksburg VA

Assignee:

Defense Research Technologies, Inc. - Rockville MD
Virginia Tech Intellectual Properties, Inc. - Blacksburg VA

International Classification:

F15C 104
F15C 112

US Classification:

137 14

Abstract:

Reduction or cancellation of acoustic noise is achieved by providing an amplified, oppositely phased version of the noise by means of an acousto-fluidic amplifier. The amplified acoustic output noise is delivered through an impedance matching horn in destructively interfering relation with the original noise. Depending on the acoustic noise source and its spatial distribution, the acousto-fluidic amplifier may be a single stage amplifier or multiple stages connected in parallel and/or cascade, with output horns spatially distributed to have the maximum cancellation effect. Sensed noise, prior to fluidic amplification, may be processed in a manner to effect feedback or feedforward control of the amplified acoustic output signals.