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Chiba Lab
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The lab designs the shapes of aerospace vehicles using evolutionary computation and computational fluid dynamics.
AboutAbout the lab
Designing the shapes of aerospace vehicles with data and computation
The Chiba Lab studies the design of aerospace vehicle shapes.
Using tools such as high-speed aerodynamics, computational fluid dynamics, evolutionary computation, and data analysis, the lab pursues a wide range of research topics.
Students are not tied to Professor Chiba's own interests; they choose topics that interest them and carry out their research on those.
The lab sees research as a way to build the solid foundation needed to face open-ended problems with no set answer once students enter society, and it runs its research and education on that basis.
Key terms
- Evolutionary computation
- An optimization method modeled on biological evolution, which searches for better designs by repeatedly selecting among candidate designs, generation after generation
- Self-organizing map
- A data analysis method that arranges the features of a large amount of data on a plane to organize it. It is used to read trends among candidate designs
- Turbulence model
- A set of equations used in computational fluid dynamics that focuses on the motion of the large-scale flow and replaces the effects of all other turbulent fluctuations with a model for calculation
NewsLab news
Accepting applicants for graduate school and visits to the lab seminar
A doctoral student received a university student award
A doctoral student received a Student Award at the international conference APISAT
A doctoral student's paper on multiple winglets was published in Biomimetics
A paper by an alumnus on aircraft flight paths and weather data was published in the Journal of the Japan Society for Aeronautical and Space Sciences
ResearchResearch themes
The lab works on designing the airframe shapes of aerospace vehicles by considering multiple fields, such as aerodynamics and structures, at the same time. It uses evolutionary computation for optimization, evaluates each airframe by computing the airflow with computational fluid dynamics, and interprets the results through data analysis.
*Illustrative imageMultidisciplinary optimization of a small passenger aircraft wing
In early-2000s research done jointly with Mitsubishi Heavy Industries, the lab built a multidisciplinary optimization system that considers aerodynamics, structures, and aeroelasticity simultaneously, and applied it to the wing shape of a small passenger aircraft. The study showed a trade-off between block fuel and drag divergence.
*Illustrative imageWing shape optimization for a reusable launch vehicle
The lab uses evolutionary computation to optimize the three-dimensional wing shape of the booster stage of a two-stage reusable launch vehicle that takes off vertically with liquid-fuel rocket engines and lands horizontally. It examines trade-offs among multiple objective functions and also performs data mining with self-organizing maps.
*Illustrative imageAnalysis of leading-edge separation vortices on a delta wing
In early-2000s research, the lab computed the flow around a delta wing tested in an experiment at NASA using several turbulence models and compared the results with the experiment. It showed that the inner vortex captured in the experiment is a shear layer drawn into the primary vortex, which formed later because of the roundness of the leading edge.
MembersFaculty
The members of the Chiba Lab include faculty, research support staff, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorKazuhisa Chiba
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “AGARD-B model on the support in the T-38” Vdjole / CC BY-SA 3.0 (cropped)
- Multidisciplinary optimization of a small passenger aircraft wing: “Air-to-air photo of a Sukhoi Superjet ) over Italy” Katsuhiko Tokunaga/SuperJet International / CC BY-SA 2.0 (cropped)
- Wing shape optimization for a reusable launch vehicle: “Model, X-33 VentureStar Reusable Launch Vehicle - DPLA - ca265e2124896d97855e85d63c4ce258 (page 1)” 作者不詳 / CC0 (cropped)
- Analysis of leading-edge separation vortices on a delta wing: “Lift-Fan Delta Wing Fighter Model in Ames 40x80 foot Wind Tunnel (A-38863)” NASA Ames Research Center / Melliar / Public domain (cropped)
- Related lab (Saito Lab): “Liquid helium lambda point transition” Alfred Leitner photographed this as part of his movie "Liquid Helium, Superfluid". / Public domain (cropped)
- Related lab (Yuki Lab): “Schneckengetriebe” Thorsten Hartmann / CC BY-SA 3.0 (cropped)
- Related lab (Yusa Lab): “Overall view of fatigue crack propagation test - DPLA - 30f2b431ef775438bf28552268b46754” Watertown Arsenal (Mass.); U.S. Army Materials and Mechanics Research Center. Public Affairs Office / Public domain (cropped)
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