Duane H Smith

US Patent:

20120198850, Aug 9, 2012

Filed:

Dec 23, 2011

Appl. No.:

13/336276

Inventors:

Jushan Chin - Irvine CA, US
Nader K. Rizk - Carmel IN, US
Thomas Richardson - Indianapolis IN, US
Mohan K. Razdan - Indianapolis IN, US
Duane Smith - Carmel IN, US

International Classification:

F23R 3/28

US Classification:

60738

Abstract:

One embodiment of the present invention is a unique gas turbine engine. Another embodiment is a unique fuel injection system for a gas turbine engine. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines and fuel injection systems for gas turbine engines. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

US Patent:

20140016932, Jan 16, 2014

Filed:

Jul 13, 2012

Appl. No.:

13/549177

Inventors:

Gary D. Coleman - Redondo Beach CA, US
Duane Smith - Rancho Palos Verdes CA, US
David Filgas - Newbury Park CA, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

H04B 10/10
H04J 14/02

US Classification:

398 48, 398 45, 398 43

Abstract:

A free space optical communication system () and method including: several optical beam expanders () for receiving incoming optical signals from ground sites and neighboring satellites; several optical preamplifiers () for preamplifying the received optical signals; one or more optical main amplifiers () for amplifying the preamplified optical signals; and an optical switch () for directing respective amplified optical signals to respective destinations via a respective optical beam expander. The respective amplified optical signals are inputted to a respective optical beam expander () for transmission to said respective destinations, as outgoing optical signals.

US Patent:

20140016941, Jan 16, 2014

Filed:

Jul 13, 2012

Appl. No.:

13/549191

Inventors:

Gary D. Coleman - Redondo Beach CA, US
Duane Smith - Rancho Palos Verdes CA, US
John F. Silny - Playa Vista CA, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

H04B 10/16

US Classification:

398121

Abstract:

A free space optical communication system () and method including a constellation of several satellites (). Each of satellites including: several inter-satellite optical telescopes () for optical communication with multiple neighboring satellites, each inter-satellite optical telescope is capable of adjusting its elevation angle; and several up/down link optical telescopes () for optical communication with multiple ground sites. As the constellation passes a given ground site, some of the up/down-link telescopes of a given satellite are configured to track at least two respective ground optical telescopes of the given ground site and send data to the ground optical telescope with the clearest line of sight to the given satellite. Moreover, each of the satellites includes optical circuitry () for optically processing and switching incoming and outgoing optical signals without converting the optical signals into electrical signals.

US Patent:

20170131475, May 11, 2017

Filed:

Nov 11, 2015

Appl. No.:

14/938361

Inventors:

- Waltham MA, US
Duane D. Smith - El Segundo CA, US
Edward Peter Gordon Smith - Santa Barbara CA, US
Adam M. Kennedy - Santa Barbara CA, US

International Classification:

G02B 6/293
G02F 1/157

Abstract:

A scene projector including an array of light emitting pixels, a tunable filter element, and a spatial light modulator. The tunable filter element is optically coupled to the array of light emitting pixels such that light emitted from the array of light emitting pixels is passed through the tunable filter element as filtered light. The spatial light modulator is optically coupled to the array of light emitting pixels and is configured to generate transmitted light by interacting with the filtered light to control at least one of an amplitude, a phase, and a polarization of the filtered light.

US Patent:

20160131676, May 12, 2016

Filed:

Nov 10, 2014

Appl. No.:

14/537683

Inventors:

- Waltham MA, US
Duane D. Smith - Rancho Palos Verdes CA, US

International Classification:

G01P 5/26

Abstract:

Method and apparatus for measuring a Doppler effect of a scattered light include: projecting an ultra violet (UV) light towards a target by a light emitter; receiving the UV light scatter from the target from the emitted UV light reflected from the target by a light receiver; measuring the frequency shift of the UV light scatter with respect to the emitted UV light to obtain distribution of line of sight velocity of macroscopic matters of the target corresponds to a Doppler shift; processing the distribution of the line of sight velocity to determine the Doppler effect of the UV light scatter; and separating the wind line of sight velocity as the centroid shift of the microscopic Doppler shift probability distribution.

US Patent:

20150071645, Mar 12, 2015

Filed:

Nov 12, 2014

Appl. No.:

14/539815

Inventors:

- Waltham MA, US
Duane Smith - Rancho Palos Verdes CA, US
John F. Silny - Playa Vista CA, US

International Classification:

H04B 10/118

US Classification:

398124, 398121

Abstract:

A free space optical communication system () and method including a constellation of several satellites (). Each of satellites including: several inter-satellite optical telescopes () for optical communication with multiple neighboring satellites, each inter-satellite optical telescope is capable of adjusting its elevation angle to accommodate changes in the number of satellites in the constellation; and several up/down link optical telescopes () for optical communication with multiple ground sites, where each ground site has several ground optical telescopes. As the constellation passes a given ground site, some of the up/down-link telescopes of a given satellite are configured to track at least two respective ground optical telescopes of the given ground site and send data to the ground optical telescope with the clearest line of sight to the given satellite. Moreover, each of the satellites includes optical circuitry () for optically processing and switching incoming and outgoing optical signals without converting the optical signals into electrical signals.