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Timothy Si Kit Lui, 423304 Stevens St, La Crescenta, CA 91214

Known as:
Timothy S Lui Timothy Si Lui Timothy Kit Lui Timothy K Lui Tim Lui Tomothy Lui
Related to:
Robert P Crane 75

Timothy Lui Phones & Addresses

3304 Stevens St, La Crescenta, CA 91214   

San Pedro, CA   

Hermosa Beach, CA   

1619 Carlson Ln, Redondo Beach, CA 90278   

Saint Paul, MN   

El Segundo, CA   

Playa del Rey, CA   

San Diego, CA   

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Timothy Lui resumes & CV records

Resumes

Timothy Lui Photo 29

Research Engineer At Sysense Inc

Location:
Greater Los Angeles Area
Industry:
Aviation & Aerospace
Timothy Lui Photo 30

Timothy Lui

Publications & IP owners

Us Patents

Spacecraft Attitude Control Strategy For Reducing Disturbance Torques

US Patent:
2020037, Dec 3, 2020
Filed:
May 29, 2019
Appl. No.:
16/425296
Inventors:
- Chicago IL, US
Gary E. Lemke - Torrance CA, US
John Preston Charles Mills - Redondo Beach CA, US
Cecilia G. Cantu - Playa Del Rey CA, US
Timothy S. Lui - La Crescenta CA, US
International Classification:
B64G 1/24
B64G 1/28
B64G 1/26
B64G 1/36
Abstract:
A control system for reducing disturbance torque of a spacecraft is disclosed. The spacecraft revolves around a celestial body surrounded by an atmosphere. The control system includes processors in electronic communication with one or more actuators and a memory. The memory stores data into a database and program code that, when executed by the one or more processors, causes the control system to instruct the spacecraft to enter a safing mode. In response to entering the safing mode, the control system instructs the one or more actuators to align a principal axis of the spacecraft with a vector that is normal to the orbit around the celestial body. The control system also instructs the actuators to rotate the spacecraft about the principal axis, where a rotational orientation of the spacecraft relative to the celestial body is shifted by about one-half a rotation about the principal axis.

Spin Stabilization Of A Spacecraft For An Orbit Maneuver

US Patent:
2017022, Aug 10, 2017
Filed:
Feb 4, 2016
Appl. No.:
15/016204
Inventors:
- Chicago IL, US
Alexander Jacob Sobel - Los Angeles CA, US
Gary Lemke - Torrance CA, US
Timothy Lui - San Pedro CA, US
Kangsik Lee - Torrance CA, US
Glenn N. Caplin - Manhattan Beach CA, US
Troy Allen Fontana - Torrance CA, US
International Classification:
B64G 1/24
B64G 1/40
B64G 1/36
B64G 1/28
B64G 1/26
Abstract:
Apparatus and methods for controlling a spacecraft for a transfer orbit. The spacecraft includes a momentum subsystem that stores angular momentum relative to a center of mass of the spacecraft, and a propulsion subsystem that includes electric thrusters. A controller identifies a target spin axis for the spacecraft, determines gimbal angles for electric thruster(s) that so that thrust forces from the electric thrusters are parallel to the target spin axis, and initiates a burn of the electric thruster(s) at the gimbal angles. The controller controls the momentum subsystem to compensate for a thruster torque produced by the burn of the electric thrusters. The momentum subsystem is able to produce a target angular momentum about the center of mass, where a coupling between the target angular momentum and an angular velocity of the spacecraft creates an offset torque to counteract the thruster torque.

Reorientation Of A Spinning Spacecraft Using Gimbaled Electric Thrusters

US Patent:
2017022, Aug 10, 2017
Filed:
Feb 4, 2016
Appl. No.:
15/016197
Inventors:
- Chicago IL, US
Qinghong W. Wang - Torrance CA, US
Gary Lemke - Torrance CA, US
Timothy Lui - San Pedro CA, US
Kangsik Lee - Torrance CA, US
Glenn N. Caplin - Manhattan Beach CA, US
Troy Allen Fontana - Torrance CA, US
International Classification:
B64G 1/28
B64G 1/36
B64G 1/26
Abstract:
Apparatus and methods for controlling a spacecraft for a transfer orbit. The spacecraft includes a propulsion subsystem with electric thrusters that are installed with two-axis gimbal assemblies. The spacecraft also includes a controller that identifies a target spin axis for the spacecraft, determines an actual spin axis for the spacecraft during the transfer orbit, determines gimbal angles for the electric thruster(s) that adjust the actual spin axis toward the target spin axis, and initiates a burn of the electric thruster(s) at the gimbal angles.

Possible Relatives

David K Lui  Daisy C Lui  Debbie Lui  Daniel M Lui  Aaron M Lui  Danny Lui  Dennis J Lui  Timothy Johnson  Timothy C Standfield  Timothy Standish 

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