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Web last revised:
August 3, 2007
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University of California, Irvine
Current Research Projects
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 CEV
Entry Guidance
We are developing entry guidance for Crew Exploration
Vehicles (CEVs) and other future space vehicles that must be
accurately and safely guided through the atmosphere. We have
extended the Shuttle entry guidance concept to allow for crossrange
as well as downrange trajectory planning. Prototype trajectory
planning and trajectory tracking algorithms have been developed.
Our Evolved Acceleration Guidance Logic for Entry (EAGLE) algorithm
was independently tested in the Advanced Guidance and Control
Study led by Marshall Space Flight Center and performed extremely
well over a broad range of entry and abort scenarios for an
X-33 type vehicle*.
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Mars
Landing
Future missions to Mars will require precise
landing capability. We are working in collaboration with engineers
at the Jet Propulsion Laboratory to develop guidance, navigation
and control technology to enable precision landing.
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Nonlinear
Time Scales
The project objective is to develop a methodology
for the analysis and design of nonlinear dynamical systems that
have an underlying multiple time-scale structure. The presence
of two or more widely separated time-scales offers the opportunity
for reduced-order analysis and design, yet at the present time
there is no general methodology for uncovering and exploiting
time-scale separation in nonlinear systems.
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(*) Picture obtained from www1.msfc.nasa.gov
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