With Antarctica’s summer season now well underway, Icelandair has helped transport a team of researchers there. The Icelandic flag carrier used one of its Boeing 767s for the job, flying there from its Reykjavík–Keflavík hub via Oslo and Cape Town. The final leg of the journey took just over six hours, and culminated in an arrival on an ice runway.

To be able to successfully break through the sound barrier, an aircraft’s engine and airframe must be designed to overcome the adverse effects of supersonic flight. Wingspan must be limited but wide enough to remain aerodynamically efficient at slower speeds. The airframe must be able to withstand the intense heat that is generated from friction as air rapidly flows across its surface. Additionally, the engine must be able to produce enough thrust to counter significant drag. //

NASA’s predecessor, the National Advisory Committee for Aeronautics (NACA), believed that it was possible for propeller-driven aircraft to break the sound barrier eventually. In the 1940s, NACA invested heavily in new designs for propellers through a high-speed propeller research program. Over time, it was able to design propeller blades capable of reaching Mach 1.0. This was accomplished by shortening and thinning the blades, sharpening the leading edges, minimizing camber, and increasing the blades’ angles.

While the change was an overall success, parts of the blade would reach supersonic speeds before others. This was problematic for two reasons—first, sonic waves are created when an object nears the speed of sound. Because the blades were reaching Mach 1.0 unevenly, they were creating pockets of sonic waves powerful enough to destroy the propeller. Second, another problem was noise. Propeller-driven aircraft are loud enough, but when those spinning blades reach supersonic speeds, the noise level generated becomes a threat to the structural integrity of the aircraft—and its pilot.

The propeller-driven XF-88B Voodoo, which was fitted with turbojets and a T-38 turboprop engine, was NACA’s experimental aircraft of choice. Unfortunately, just as it was on the brink of success, the agency abandoned the project. By this point, Yeager had made history, and advancements in jet engine technology had effectively crushed any interest in high-speed propellers.

Old Hillbilly
36 minutes ago
"Order please."
"Yea, I will have a double nothing burger with a side of large lies."

Understanding Projects
Understanding of project like how folders are arranged? how files are linked? which tech stack is used? is the most important thing before raising an issue or making a pull request in any project on GitHub. //

Making Pull Request
Your PR should do one thing. Always make a pull request for one part or section so that it would be easier for reviewers and maintainers to merge your pull request. If you are solving multiple issues in a project then open multiple PRs.

Officials have announced that Kemmerer, population 2,600, will be the site of a plant featuring a liquid sodium-cooled reactor //

The high heat-transfer properties of sodium will allow the Natrium plant to be air-cooled. That will enable the plant to be quickly shut down in case of an emergency, and the absence of emergency generators and pumps will save on costs, Levesque said.

Others are skeptical about the benefits of sodium compared with water for cooling as in conventional nuclear plants.

“The use of liquid sodium has many problems. It’s a very volatile material that can catch fire if it’s exposed to air or water,” said Edwin Lyman, director of nuclear power safety with the Union of Concerned Scientists science advocacy non-profit.

In this video today, we are going to see rare historical portraits, brought to life by mind blowing colorizations and facial animations using AI stuff. We never cease to get fascinated by old black and white photos in our history, that seem to portray a world so distant to us today. But with new technology and artistic skills of few individuals, this gloomy world has been brought to us much closer and pretty much alive again, by adding colors to it, in most spectacular of ways. In addition to this, I have added a subtle facial animations using Artificial Intelligence algorithms, that is going to blow you away.

The defense had previously raised two issues.

The first is that the prosecution improperly infringed on Kyle Rittenhouse’s constitutional right to remain silent when, during questioning, ADA Thomas Binger tried to suggest that Rittenhouse hadn’t made a comment until he was able to hear everyone else testify. That caused fireworks with the judge admonishing the prosecutor and saying he was on the line and maybe over it.

The second issue was that the prosecution had tried to introduce evidence that the judge had already ruled they could not introduce. The judge had also admonished the prosecutor over that, saying that he didn’t believe the prosecution when Binger claimed that he didn’t think the judge’s ruling applied to the evidence he, Binger, was trying to introduce. The judge chastised Binger, saying “Don’t get brazen with me,” “I don’t believe you,” and “There’d better not being another incident.”

Now, in a formal filing for a motion for mistrial with prejudice that they made on Monday, the defense mentions those issues but also raises another — that the prosecution withheld evidence from defense. The defense argues that on November 5, the prosecution turned over a compressed version of a drone video that had been taken on that day showing some of the incident of Rittenhouse running into the lot with Joseph Rosenbaum chasing him and then the shooting. Meanwhile, the defense is saying that the prosecution had a clearer version of the video that they did not provide until after both sides were finished presenting their cases. //

‘The problem is the prosecution gave the defense a compressed version of the video. What that means is the video provided to the defense was not as clear as the video kept by the state.’

The motion goes onto explain that the file size of the defense video is just 3.6MB while the prosecution’s is 11.2MB.

Aurora Borealis, the good old.
Taken by Markus on November 15, 2021 @ Tromsø Norway

Welcome to the independent Elsewhere Vangelis site. With this unofficial fan project we hope to share our passion for the music of Vangelis, provide an introduction into the broad scope of his work, as well as keep you informed on all the latest news out there. We try to confirm and verify all of that as well as we can.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

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