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Category: Aerospace Engineering

Cold water currently slowing fastest Greenland glacier — ScienceDaily

NASA research shows that Jakobshavn Glacier, which has been Greenland’s fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. The glacier is still adding to global sea level rise — it continues to lose more ice to the ocean than it gains from snow accumulation — but at a slower rate. The researchers conclude that the slowdown of…

Tall ice-cliffs may trigger big calving events — and fast sea-level rise — ScienceDaily

Glaciers that drain ice sheets such as Antarctica or Greenland often flow into the ocean, ending in near-vertical cliffs. As the glacier flows into the sea, chunks of the ice break off in calving events. Although much calving occurs when the ocean melts the front of the ice, and ice cliff above falls down, a new study presents another method of calving: slumping. And this process could break off much larger chunks of ice at a quicker rate. The ice-cliff…

Close look at what might be happening in other, more energetic galaxies — ScienceDaily

The center of our galaxy is a frenzy of activity. A behemoth black hole — 4 million times as massive as the sun — blasts out energy as it chows down on interstellar detritus while neighboring stars burst to life and subsequently explode. Now, an international team of astronomers has discovered two exhaust channels — dubbed “galactic center chimneys” — that appear to funnel matter and energy away from the cosmic fireworks in the Milky Way’s center, about 28,000 light-years…

Supercomputers to help supercharge ceramic matrix composite manufacturing

Visualization of CMC densification depicting poor infiltration (blue) with internal voids. Credit: Ramanan Sankaran New software capabilities developed by computational scientists at the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL) and the Rolls Royce Corporation could soon help engineers lift the gas turbine engines of aircraft and power plants to higher efficiencies. Ceramic matrix composite (CMC) materials—tough, lightweight materials capable of withstanding high temperatures upwards of 2,000° F—are poised to replace metal alloy parts in the hottest…

NASA grant helps Mizzou SURF prep for competition

Currently, SURF is working toward prepping its autonomous underwater vehicle for competition this summer. Photos by Sam O’Keefe. Student organizations and competition teams are among the best ways for Mizzou Engineering undergraduates to get hands-on engineering experience. For those interested in robotics, Mizzou SURF (Students Underwater Robotics Foundation) is one avenue for them to get their feet wet, both literally and figuratively. The nascent org is in its second year of building its submarine robots, known as autonomous underwater vehicles…

Boeing ‘finalizing’ anti-stall update after Ethiopia crash

An Air Canada Boeing 737 MAX 8 jet approaches Toronto Pearson International Airport on March 13, 2019, before a worldwide grounding took effect Boeing is finalizing a software update and pilot training linked to the MCAS anti-stalling feature, under scrutiny after two 737 Max 8 crashes, the company’s CEO said on Sunday. “Boeing is finalizing its development of a previously-announced software update and pilot training revision that will address the MCAS flight control law’s behavior in response to erroneous sensor…

The stress of spaceflight gives viruses a holiday from immune surveillance, putting future deep-space missions in jeopardy — ScienceDaily

Herpes viruses reactivate in more than half of crew aboard Space Shuttle and International Space Station missions, according to NASA research published in Frontiers in Microbiology. While only a small proportion develop symptoms, virus reactivation rates increase with spaceflight duration and could present a significant health risk on missions to Mars and beyond. NASA’s rapid viral detection systems and ongoing treatment research are beginning to safeguard astronauts — and immunocompromised patients on Earth, too. Herpes viruses reactivate in immunocompromised astronauts…

Engineering honors past, present, future at annual Awards Banquet

Award winners Robert L. Reymond Jr., Donald P. Pallia, Jerry L. Jost and Stephen W. Searcy joined Dean Elizabeth Loboa at Thursday’s College of Engineering Awards Banquet. Photo by Michael Cali. The past, present and future were on full display Thursday as Mizzou Engineering celebrated its alumni, faculty, students and staff at its annual College of Engineering Awards Banquet. Robert L. Reymond, Jr. (BS ME ’87) and Stephen W. Searcy (BS AgE ’74, MS ’76) were given the 2019 Missouri…

What is the MCAS system on the Boeing 737 Max 8?

The crash of an Ethiopian Airlines plane has put the spotlight on an anti-stalling system used on the 737 Max 8 aircraft Similarities between the Lion Air and Ethiopian Airlines crashes have focused attention on an anti-stalling system used in the new Boeing 737 Max 8 aircraft. The Maneuvering Characteristics Augmentation System (MCAS) is an automated safety feature on the 737 Max 8 designed to prevent the plane from entering into a stall, or losing lift. Both the Lion…

Faster robots demoralize co-workers — ScienceDaily

It’s not whether you win or lose; it’s how hard the robot is working. A Cornell University-led team has found that when robots are beating humans in contests for cash prizes, people consider themselves less competent and expend slightly less effort — and they tend to dislike the robots. The study, “Monetary-Incentive Competition Between Humans and Robots: Experimental Results,” brought together behavioral economists and roboticists to explore, for the first time, how a robot’s performance affects humans’ behavior and reactions…