Joshua Ott
Ph.D. Student in Aeronautics and Astronautics, admitted Autumn 2021
Ph.D. Minor, Earth and Planetary Sciences
Bio
Joshua is a fourth-year Ph.D. Candidate in Aeronautics & Astronautics at Stanford University and is a recipient of the Stanford Graduate Fellowship (SGF) in Science & Engineering. He is currently serving on Active Duty in the United States Air Force through the DAWN-ED PhD fellowship. Joshua is a researcher in the Stanford Intelligent Systems Lab (SISL) where his research focuses on decision making under uncertainty for autonomous systems. Joshua has also conducted research in collaboration with SISL and NASA JPL related to the DARPA Subterranean Challenge.
Joshua earned his Bachelor of Science in Mechanical Engineering from the University of California, Berkeley in 2020. During his time at UC Berkeley, Joshua's work focused on optimization methods for bioinspired design, machine learning for real time manufacturing control, and experimental multi-phase flow analysis. Joshua has also interned at Lawrence Livermore National Laboratory and the NASA Jet Propulsion Laboratory.
Honors & Awards
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Stanford Graduate Fellowship (SGF) in Science & Engineering, Stanford University (03/2020)
Education & Certifications
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M.S., Stanford University, Aeronautics & Astronautics (2021)
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B.S., University of California, Berkeley, Mechanical Engineering (2020)
All Publications
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Safe and Efficient Navigation in Extreme Environments using Semantic Belief Graphs
IEEE. 2023: 5653-5658
View details for DOI 10.1109/ICRA48891.2023.10161056
View details for Web of Science ID 001036713004090
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Fast and Scalable Signal Inference for Active Robotic Source Seeking
IEEE. 2023: 7909-7915
View details for DOI 10.1109/ICRA48891.2023.10161445
View details for Web of Science ID 001048371101035
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Sequential Bayesian Optimization for Adaptive Informative Path Planning with Multimodal Sensing
IEEE. 2023: 7894-7901
View details for DOI 10.1109/ICRA48891.2023.10160859
View details for Web of Science ID 001048371101033
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Semantics-Aware Mission Adaptation for Autonomous Exploration in Urban Environments
IEEE. 2023: 2065-2070
View details for DOI 10.1109/IROS55552.2023.10341632
View details for Web of Science ID 001133658801079
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Adaptive coverage path planning for efficient exploration of unknown environments
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
2022
View details for DOI 10.1109/IROS47612.2022.9982287
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FIG-OP: Exploring large-scale unknown environments on a fixed time budget
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
2022
View details for DOI 10.1109/IROS47612.2022.9981271
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Precise localization and semantic segmentation detection of printing conditions in fused filament fabrication technologies using machine learning
ADDITIVE MANUFACTURING
2021; 37
View details for DOI 10.1016/j.addma.2020.101696
View details for Web of Science ID 000609203100072
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Algorithmic-driven design of shark denticle bioinspired structures for superior aerodynamic properties
BIOINSPIRATION & BIOMIMETICS
2020; 15 (2): 026001
Abstract
All engineering systems that move through fluids can benefit from a reduction in opposing forces, or drag. As a result, there is a significant focus on finding new ways to improve the lift-to-drag ratios of systems that move through fluids. Nature has proven to be an extremely beneficial source of inspiration to overcome current technical endeavors. Shark skin, with its low-drag riblet structure, is a prime example of an evolutionary design that has inspired new implementations of drag reducing technologies. Previously, it has been shown that denticles have drag reducing properties when applied to airfoils and other surfaces moving through fluids. Researchers have been able to mimic the structure of shark skin, but minimal work has been done in terms of optimizing the design of the denticles due to the large number of parameters involved. In this work, we use a combination of computational fluid dynamics simulations and optimization methods to optimize the size and shape of shark skin denticles in order to decrease drag. Results show that by changing the size, shape, and orientation of the denticles, the boundary layer can be altered, and thereby reduce drag. This research demonstrates that denticles play a similar role as vortex generators in energizing the boundary layer to decrease drag. These mechanisms, along with the fundamental knowledge gained through the study of these drag reducing structures can be applied to a vast number of fields including aeronautical, oceanic, and automotive engineering.
View details for DOI 10.1088/1748-3190/ab5c85
View details for Web of Science ID 000508176300001
View details for PubMedID 31775125