Lab Earthquakes Show How Grains at Fault Boundaries Lead to Major Quakes
06-07-22
By simulating earthquakes in a lab, Caltech engineers have provided strong experimental support for a form of earthquake propagation now thought responsible for the magnitude-9.0 earthquake that devastated the coast of Japan in 2011. "Our novel experimental approach has enabled us to look into the earthquake process up close, and to uncover key features of rupture propagation and friction evolution in rock gouge," says Vito Rubino, research scientist and lead author of the Nature paper. The Nature paper is titled "Intermittent lab earthquakes in dynamically weakening fault gouge." Rubino and his co-authors Nadia Lapusta, Lawrence A. Hanson, Jr., Professor of Mechanical Engineering and Geophysics, and Ares Rosakis, Theodore von Kármán Professor of Aeronautics and Mechanical Engineering, show that so-called "stable" or "creeping" faults are not actually immune to major ruptures after all, as previously suspected. [Caltech story]
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GALCIT
MCE
Ares Rosakis
Nadia Lapusta
Vito Rubino
What Is the Future of Wind Energy?
04-21-22
Humans have used windmills to capture the force of the wind as mechanical energy for more than 1,300 years. Unlike early windmills, however, modern wind turbines use generators and other components to convert energy from the spinning blades into a smooth flow of AC electricity. In this video, John Dabiri, Centennial Professor of Aeronautics and Mechanical Engineering discusses the future of wind energy technology. [Caltech story]
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MCE
John Dabiri
AIAA International Student Conference Winners
01-25-22
The American Institute of Aeronautics and Astronautics (AIAA) announced the undergraduate, team, and graduate winners of the 2022 International Student Conference. Luis Pabon Madrid, Polina Verkhovodova, Malcom Tisdale, Isabella Dula, Kaila Coimbra, Tanmay Gupta, Leah Soldner, Rithvik Musuku, and Soon-Jo Chung, Bren Professor of Aerospace and Control and Dynamical Systems; Jet Propulsion Laboratory Research Scientist, received 1st place in the Team Category for "Design of a Modular and Orientable Electrodynamic Shield for Lunar Dust Mitigation." The International Student Conference is an invitation-only student conference where first-place winners from each of the previous year’s AIAA Regional Student Conferences present their winning papers. [AIAA story]
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MCE
CMS
Soon-Jo Chung
Luis Pabon Madrid
Rithvik Musuku
Leah Soldner
Tanmay Gupta
Kaila Coimbra
Isabella Dula
Malcom Tisdale
Polina Verkhovodova
Gunnarson and Dabiri Teach AI to Navigate Ocean with Minimal Energy
12-09-21
Engineers at Caltech, ETH Zurich, and Harvard are developing an artificial intelligence (AI) that will allow autonomous drones to use ocean currents to aid their navigation, rather than fighting their way through them. "When we want robots to explore the deep ocean, especially in swarms, it's almost impossible to control them with a joystick from 20,000 feet away at the surface. We also can't feed them data about the local ocean currents they need to navigate because we can't detect them from the surface. Instead, at a certain point we need ocean-borne drones to be able to make decisions about how to move for themselves," says John Dabiri, Centennial Professor of Aeronautics and Mechanical Engineering. [Caltech story]
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MCE
John Dabiri
Peter Gunnarson
Dabiri Appointed to Secretary of Energy Advisory Board
10-15-21
The Department of Energy (DOE) has announced that John O. Dabiri, the Centennial Professor of Aeronautics and Mechanical Engineering, has been appointed to the Secretary of Energy Advisory Board (SEAB). The SEAB meets quarterly to advise Secretary of Energy Jennifer Granholm on how best to achieve the department's priorities and offer recommendations on scientific, technical, and programmatic issues relating to the DOE's mission. "I'm excited to work with the secretary to ensure strong support for fundamental science research, especially in areas where the technological application might be hard to predict today," Dabiri said. "Secretary Granholm's vision to accelerate deployment of climate solutions matches my own sense of urgency to advance sustainability. I'm honored by the opportunity provide advice where it can be helpful for achieving that goal." [Caltech story]
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MCE
John Dabiri
Dabiri Appointed to President's Council of Advisors on Science and Technology
09-22-21
President Joe Biden has announced the appointment of John O. Dabiri, Centennial Professor of Aeronautics and Mechanical Engineering, to the President's Council of Advisors on Science and Technology (PCAST). Presidents have established advisory committees of scientists, engineers, and health professionals ever since Franklin D. Roosevelt created his Science Advisory Board in 1933. "We're here to provide whatever input the president needs," Dabiri says. "My understanding is that we'll be meeting pretty frequently, as the president wants science to be a big part of his decision-making process." [Caltech story]
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John Dabiri
