K. Mease 10/11/06 1 Mechanical & Aerospace Engineering Henry Samueli School of Engineering University of California, Irvine K. D. Mease Professor SAE Aerospace.

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Mechanical & Aerospace Engineering

Henry Samueli School of EngineeringUniversity of California, Irvine

K. D. MeaseProfessor

SAE Aerospace Control and Guidance Systems CommitteeWilliamsburg, Virginia

October 11, 2006

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UCI Mechanical & Aerospace Engineering

21 Faculty, 4 Adjunct460 Undergraduate students100 Graduate students

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Aerospace Program of Excellence

• 1 Guidance, Navigation and Control assistant professor hired last year

• Recruiting for 4 new aerospace faculty

– 2 Structures

– 1 Space Power and Propulsion

– 1 Space Systems

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Research and Educational Activities of K. Mease

Research Projects:

• Model Decomposition for Multiple Time-Scale Nonlinear Dynamical Systems (NSF)

• Entry Guidance for Mars Landing (JPL)• Flight Control via Internal Moving Mass (Optimal Synthesis, MDA)

Undergraduate Design Project: UCI Rocket Project (25 students)

K-12 Outreach: COSMOS summer program (25 students)

Classroom Teaching:

Undergrad: Dynamics and Control of Flight Vehicles

Grad: Applied Math, Optimal Control, Nonlinear Control

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Vehicle Control via Moving Mass

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Hypersonic Entry Guidance

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Hypersonic Entry Guidance Advances

Motivation:

• Reduce 3D position error at supersonic decelerator deployment point

• Accommodate broader class of landers relative to MSL baseline guidance

– Angle of attack modulation

– Higher L/D

– Active path constraints (heating, g-load, dynamic pressure)

• Increase levels of adaptability, mission flexibility and on-board autonomy

Benefits:

• Pinpoint delivery to parachute deployment

• Reduce propellant required for pinpoint landing

• Establish mature guidance approach for larger range of landers

Ellipsled L/D 0.3 – 0.8MSL type lander L/D 0.18 – 0. 25

Human Mission

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Improved Chute Deploy Position Control

• Developed “position

guidance” – Switch from drag-based

hypersonic guidance to position guidance to improve parachute deployment position control

– Vertical as well as horizontal position control at chute deploy is important

– Enables higher elevation landing sites and reduces propellant req’ts. for pinpoint landing terminal descent

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UCI Rocket Project

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UCI Rocket Project

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UCI Rocket Flight Data, Sept. 9, 2006

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COSMOS

• COSMOS = California State Summer School for Mathematics & Science. Advisory Board Chair: Gayle Wilson, former 1st Lady of CA

• 4 week summer residential academic experience for top CA high school students in math and science

• Mission statement: “… motivate the most creative minds of the new generation of prospective scientists, engineers and mathematicians …”

• Programs at UCI, UCSD, UCD, UCSC• UCI Mechanical and Aerospace Engineering Cluster

2003, 2004, 2006. Lectures and labs. Design, build, fly R/C airplanes.