Dabiri Appointed to President's Council of Advisors on Science and Technology
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]
New Algorithm Helps Autonomous Vehicles Find Themselves, Summer or Winter
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]
Simon Toedtli Receives 2021 Richard B. Chapman Memorial Award
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.
EAS New Horizons Diversity, Equity & Inclusion Award
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.
Hungry Fruit Flies are Extreme Ultramarathon Fliers
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]