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New Algorithm Helps Autonomous Vehicles Find Themselves, Summer or Winter

06-24-21

Without GPS, autonomous systems get lost easily. Now a new algorithm developed at Caltech allows autonomous systems to recognize where they are simply by looking at the terrain around them—and for the first time, the technology works regardless of seasonal changes to that terrain. The general process, known as visual terrain-relative navigation (VTRN), was first developed in the 1960s. By comparing nearby terrain to high-resolution satellite images, autonomous systems can locate themselves. The problem is that, in order for it to work, the current generation of VTRN requires that the terrain it is looking at closely matches the images in its database. To overcome this challenge, Anthony Fragoso, Lecturer in Aerospace; Staff Scientist, Connor Lee, Graduate student in Aerospace, Austin McCoy, Undergraduate, and Soon-Jo Chung, Bren Professor of Aerospace and Control and Dynamical Systems and research scientist at JPL, turned to deep learning and artificial intelligence (AI) to remove seasonal content that hinders current VTRN systems. [Caltech story]

Tags: research highlights GALCIT MCE CMS Soon-Jo Chung Anthony Fragoso Connor Lee Austin McCoy

Simon Toedtli Receives 2021 Richard B. Chapman Memorial Award

06-17-21

Simon Toedtli, a graduate student working with Professor Beverley McKeon, is the recipient of the 2021 Richard B. Chapman Memorial Award. His doctoral research combined direct numerical simulations and modal analyses to investigate the physics of closed-loop wall transpiration in a turbulent channel flow and to build low-order flow models for controller design. Both aspects contribute towards the development of drag-reducing control schemes for engineering applications, and will help make future transportation vessels more sustainable. Simon is continuing his studies in fluid mechanics as a postdoctoral fellow at Johns Hopkins University, where he will work on data assimilation for turbulent flows. The Richard B. Chapman Memorial Award is given to an EAS graduate student in hydrodynamics who has distinguished himself or herself in research.

Tags: honors GALCIT Beverley McKeon Simon Toedtli

Professor Braun Receives National Space Society Space Pioneer Award

06-11-21

Robert D. (Bobby) Braun, Bren Professor of Aerospace, is a recipient of the 2021 National Space Society Space Pioneer Award. This award was given to Professor Braun in recognition of his contributions to the EDL systems and technology. The annual Space Pioneer awards recognize individuals whose accomplishments have helped to open the space frontier. This prestigious award is given to individuals who have made a significant contribution towards the development of, "a spacefaring civilization that will establish communities beyond the Earth.”

Tags: honors GALCIT Robert Braun

Honorable Mention Best Paper Award from IEEE Robotics & Automation Letters

05-24-21

Benjamin Rivière, ‪Wolfgang Hönig, Yisong Yue, Professor of Computing and Mathematical Sciences, and Soon-Jo Chung, Bren Professor of Aerospace and Control and Dynamical Systems; Jet Propulsion Laboratory Research Scientist, have received an honorable mention for the IEEE Robotics and Automation Letters Best Paper Award for their paper titled "GLAS: Global-to-Local Safe Autonomy Synthesis for Multi-Robot Motion Planning With End-to-End Learning."

Tags: honors GALCIT CMS Yisong Yue CNS Soon-Jo Chung Benjamin Rivière Wolfgang Hönig

EAS New Horizons Diversity, Equity & Inclusion Award

05-04-21

The Division of Engineering and Applied Sciences seeks nominations to recognize and honor individuals within the EAS community who have actively contributed to EAS’s goal to be a diverse, equitable, and inclusive engineering community. The award is available to members of the EAS community, including current students, postdoctoral scholars, staff, and faculty. Nominations are due Wednesday, May 19, 2021 and are accepted from anyone in the EAS community, EAS alumni and members of the Caltech community. Click here for full description of how to make a nomination.

Tags: APhMS EE honors GALCIT MedE MCE CMS ESE

Professor Rosakis Receives Horace Mann Medal

05-03-21

Ares Rosakis, Theodore von Karman Professor of Aeronautics and Mechanical Engineering is the recipient of the 2020/2021 Horace Mann Medal. The Horace Mann Medal is given annually to a Brown Graduate School alumnus or alumna who has made significant contributions in his or her field, inside or outside of academia. Rosakis is recognized for his research and mentoring skills, as well as being “a champion of societal impact that can be realized through the sciences,” says Larry Larson, Sorensen Family Dean of the Brown School of Engineering. [Previous Winners]

Tags: honors GALCIT MCE Ares Rosakis

How Do You Test a Helicopter Bound for Mars?

04-29-21

Caltech grad students helped JPL build a custom wind tunnel in a vacuum chamber for the Mars Ingenuity helicopter. The Ingenuity helicopter may be the first vehicle ever to fly on Mars, but Mars was not the first place it has ever flown. Before packaging it up and blasting it to the Red Planet, engineers at JPL gave the helicopter a trial run in a special wind tunnel. The fan array was designed and built by JPL engineers with input from Chris Dougherty and Marcel Veismann, who are currently working with Morteza Gharib, Hans W. Liepmann Professor of Aeronautics and Bioinspired Engineering and Booth-Kresa Leadership Chair of Caltech's Center for Autonomous Systems and Technologies (CAST). Jason Rabinovitch, who was a mechanical engineer at JPL working on testing the helicopter, reached out to the CAST team in 2017. "I'd earned my PhD at GALCIT, so I was aware of CAST and its facilities," says Rabinovitch. [Caltech story]

Tags: research highlights GALCIT Morteza Gharib Jason Rabinovitch Marcel Veismann Chris Dougherty

Hungry Fruit Flies are Extreme Ultramarathon Fliers

04-22-21

Michael Dickinson, Esther M. and Abe M. Zarem Professor of Bioengineering and Aeronautics; Executive Officer for Biology and Biological Engineering, has discovered that fruit flies can fly up to 15 kilometers (about 9 miles) in a single journey—6 million times their body length, or the equivalent of over 10,000 kilometers for the average human. "The dispersal capability of these little fruit flies has been vastly underestimated. They can travel as far or farther than most migratory birds in a single flight. These flies are the standard laboratory model organism, but they are almost never studied outside of the laboratory and so we had little idea what their flight capabilities were," Dickinson says. [Caltech story]

Tags: research highlights GALCIT Michael Dickinson CNS

New EAS Division Chair Announced

04-15-21

Harry A. Atwater, the Howard Hughes Professor of Applied Physics and Materials Science and director of the Liquid Sunlight Alliance (LiSA), has been selected as the new chair of the Division of Engineering and Applied Science. On July 1, he will begin his five-year term, taking over the Otis Booth Leadership Chair from current division chair Guruswami (Ravi) Ravichandran, the John E. Goode, Jr., Professor of Aerospace and Mechanical Engineering. After more than three decades at Caltech, Atwater says he's looking forward to the opportunity to serve the Institute in a new way. "I'm excited to be able to pay back or pay forward all of the investments that Caltech has made in me," he says. "I'm excited to try to do what I can to catalyze research initiatives that my colleagues are excited to lead, and to make the division as strong and distinctive as possible." [Caltech story]

Tags: APhMS honors GALCIT MCE Harry Atwater Guruswami Ravichandran

Sorina Lupu Awarded Zonta International Amelia Earhart Fellowship

04-12-21

Graduate student Sorina Lupu has been awarded the Zonta International Amelia Earhart Fellowship. The Amelia Earhart Fellowship was established in 1938 in honor of famed pilot and Zontian, Amelia Earhart. The Fellowship is awarded annually to up to thirty-five women pursuing Ph.D. degrees in aerospace engineering and space sciences.

Tags: honors GALCIT Sorina Lupu