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Category: Aerospace Engineering

Huge Proposed Increases in USA Government Science and Engineering Support » Curious Cat Science and Engineering Blog

Huge Proposed Increases in USA Government Science and Engineering Support Posted on April 3, 2021  Comments (0) The Biden administration has proposed greatly increasing USA government spending on science and engineering. They are proposing levels last seen in the 1960s when the USA was most committed to science and engineering spending (as most visibly seen in support for NASA). Advance U.S. leadership in critical technologies and upgrade America’s research infrastructure. U.S. leadership in new technologies—from artificial intelligence to biotechnology to…

Keeping an eye on infrastructure systems: 4 tactics

Planning decisions have a long-term impact on the resilience of urban systems—and not just in Singapore. Credit: Colourbox Even minor disruptions in infrastructure systems can have fatal consequences. Researchers and practitioners counter that risk by taking action on multiple levels. Four examples. Urban systems: increase resilience By trade, Božidar Stojadinović is an expert in earthquake-proof construction. Now a Professor of Structural Dynamics and Earthquake Engineering, he specializes in urban systems and how to make them more resilient to earthquakes. “Systems…

Research finds EPA underestimates methane emissions from oil and gas production — ScienceDaily

The Environmental Protection Agency (EPA) is underestimating methane emissions from oil and gas production in its annual Inventory of U.S. Greenhouse Gas Emissions and Sinks, according to new research from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS). The research team found 90 percent higher emissions from oil production and 50 percent higher emissions for natural gas production than EPA estimated in its latest inventory. The paper is published in the journal Atmospheric Chemistry and Physics.…

Control system helps several drones team up to deliver heavy packages

Four drones team up to lift a package Researchers have developed a modular solution for handling larger packages without the need for a complex fleet of drones of varying sizes. By allowing teams of small drones to collaboratively lift objects using an adaptive control algorithm, the strategy could allow a wide range of packages to be delivered using a combination of several standard-sized vehicles. (Credit: John Toon, Georgia Tech) Many parcel delivery drones of the future are expected to handle…

Study provides new details on the fate of spilled oil in the marine environment, effectiveness of chemical dispersants — ScienceDaily

A new study lead by scientists at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science demonstrates that under realistic environmental conditions oil drifting in the ocean after the DWH oil spill photooxidized into persistent compounds within hours to days, instead over long periods of time as was thought during the 2010 Deepwater Horizon oil spill. This is the first model results to support the new paradigm of photooxidation that emerged from laboratory research. After an oil…

‘Wearable microgrid’ uses the human body to sustainably power small gadgets

Biofuel cells harvest energy from sweat. Credit: Lu Yin Nanoengineers at the University of California San Diego have developed a “wearable microgrid” that harvests and stores energy from the human body to power small electronics. It consists of three main parts: sweat-powered biofuel cells, motion-powered devices called triboelectric generators, and energy-storing supercapacitors. All parts are flexible, washable and can be screen printed onto clothing. The technology, reported in a paper published Mar. 9 in Nature Communications, draws inspiration from community…

The U. S. Military’s Threat to Commercial Aviation

  The Global Positioning System (GPS) that allows a few dollars’ worth of electronics to determine your position within a few feet almost anywhere in the world has proved to be a great boon to aviation, which previously relied on an expensive and not that reliable network of ground-based technology for electronic navigation.  Newer aircraft use GPS as an essential part of their autopilot system, for example.  A report in the February 2021 issue of IEEE Spectrum shows that this…

Study opens window into the landscape of extreme topological matter — ScienceDaily

In a twist befitting the strange nature of quantum mechanics, physicists have discovered the Hall effect — a characteristic change in the way electricity is conducted in the presence of a magnetic field — in a nonmagnetic quantum material to which no magnetic field was applied. The discovery by researchers from Rice University, Austria’s Vienna University of Technology (TU Wien), Switzerland’s Paul Scherrer Institute and Canada’s McMaster University is detailed in a paper in the Proceedings of the National Academy…

NASA to begin high-voltage ground testing on all-electric X-57

NASA’s all-electric X-57 Maxwell prepares for ground vibration testing, or GVT, at NASA’s Armstrong Flight Research Center in California. Done in parallel with cruise motor controller testing, the GVT tested the vehicle at various vibration levels, helping engineers to examine and validate the integrity of the vehicle for flight conditions. A goal of X-57 is to help the Federal Aviation Administration set certification standards for emerging electric aircraft markets. Credit: NASA Photo / Lauren Hughes NASA is set to start…

Comet makes a pit stop near Jupiter’s asteroids — ScienceDaily

After traveling several billion miles toward the Sun, a wayward young comet-like object orbiting among the giant planets has found a temporary parking place along the way. The object has settled near a family of captured ancient asteroids, called Trojans, that are orbiting the Sun alongside Jupiter. This is the first time a comet-like object has been spotted near the Trojan population. The unexpected visitor belongs to a class of icy bodies found in space between Jupiter and Neptune. Called…