WASHINGTON, Aug. 27, 2020 /PRNewswire/ — NASA will broadcast a Space Launch System (SLS) rocket full-scale booster test at 2:40 p.m. EDT Wednesday, Sept. 2, on NASA Television and the agency’s website, followed by a media teleconference.
The Flight Support Booster-1 test builds on three full-scale development test firings and two qualification test firings NASA and Northrop Grumman successfully completed with the five-segment solid rocket motor in preparation for the first three Artemis missions.
The Sept. 2 test at Northrop Grumman facilities in Promontory, Utah, will help teams evaluate potential new materials, processes, and improvements for the boosters that will power deep space missions beyond Artemis III. The test also will provide another opportunity to evaluate motor manufacturing and performance.
About an hour and 30 minutes after the test, media will have the opportunity to participate in a teleconference with:
- Bruce Tiller, manager of the SLS boosters office at NASA’s Marshall Space Flight Center in Huntsville, Alabama
- Charlie Precourt, vice president of propulsion systems at Northrop Grumman, in Promontory
To participate, media must contact Kathryn Hambleton at 202-358-1100 or email@example.com no later than noon Tuesday, Sept. 1.
During the broadcast, anyone can submit questions on Twitter using the hashtag #AskNASA. Updates on the test will be posted on the Artemis blog.
Powered by four RS-25 engines and two boosters, the SLS rocket produces more than 8 million pounds of thrust to power missions to the Moon and, ultimately, Mars. The twin five-segment solid rocket boosters produce more than 75% of the rocket’s thrust during the first two minutes of ascent.
The SLS rocket, Orion spacecraft, Gateway, and human landing system are part of NASA’s backbone for deep space exploration. The Artemis program is the next step in human space exploration and is part of America’s broader Moon to Mars exploration approach, in which astronauts will explore the Moon. Experience gained there will enable humanity’s next giant leap: sending humans to Mars.
For additional resources, including imagery and interviews for the test, visit the digital press kit:
Source: – Stockhouse
A clearer view of what makes glass rigid – EurekAlert
Tokyo, Japan – Researchers led by The University of Tokyo employed a new computer model to simulate the networks of force-carrying particles that give amorphous solids their strength even though they lack long range order. This work may lead to new advances in high-strength glass, which can be used for cooking, industrial, and smartphone applications.
Amorphous solids such as glass–despite being brittle and having constituent particles that do not form ordered lattices–can possess surprising strength and rigidity. This is even more unexpected because amorphous systems also suffer from large anharmonic fluctuations. The secret is an internal network of force-bearing particles that span the entire solid which lends strength to the system. This branching, dynamic network acts like a skeleton that prevents the material from yielding to stress even though it makes up only a small fraction of the total particles. However, this network only forms after a “percolation transition” when the number of force-bearing particles exceeds a critical threshold. As the density of these particles increases, the probability that a percolating network that goes from one end to the other increases from zero to almost certain.
Now, scientists from the Institute of Industrial Science at The University of Tokyo have used computer simulations to carefully show the formation of these percolating networks as an amorphous material is cooled below its glass transition temperature. In these calculations, binary particle mixtures were modelled with finite-range repulsive potentials. The team found that the strength of amorphous materials is an emergent property caused by the self-organization of the disordered mechanical architecture.
“At zero temperature, a jammed system will show long-range correlations in stress due to its internal percolating network. This simulation showed that the same is true for glass even before it has completely cooled,” first author Hua Tong says.
The force-bearing backbone can be identified by recognizing that particles in this network are must be connected by at least two strong force bonds. Upon cooling, the number of force-bearing particles increases, until a system-spanning network links together.
“Our findings may open up a way towards a better understanding of amorphous solids from a mechanical perspective,” senior author Hajime Tanaka says. Since rigid, durable glass is highly prized for smartphones, tablets, and cookware, the work can find many practical uses.
The work is published in Nature Communications as “Emergent solidity of amorphous materials as a consequence of mechanical self-organisation” (DOI: 10.1038/s41467-020-18663-7).
About Institute of Industrial Science (IIS), the University of Tokyo
Institute of Industrial Science (IIS), the University of Tokyo is one of the largest university-attached research institutes in Japan.
More than 120 research laboratories, each headed by a faculty member, comprise IIS, with more than 1,000 members including approximately 300 staff and 700 students actively engaged in education and research. Our activities cover almost all the areas of engineering disciplines. Since its foundation in 1949, IIS has worked to bridge the huge gaps that exist between academic disciplines and real-world applications.
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.
CP Holiday Train derailed this holiday season due to the pandemic – Barrie 360 – Barrie 360
The CP Holiday train will not be riding the rails this year to the COVID-19 outbreak.
That said, the spirit of the train will carry on.
“COVID-19 has created many challenges for communities across our network and has only increased the need at local food banks and food shelves,” said CP President and Chief Executive Officer Keith Creel. “It is our honor to continue to donate to communities across our network this year, even if the train itself will not run. The spirit of the Holiday Train program and the Christmas spirit will carry on this year through our virtual concert. We will have the Holiday Train rolling again spreading Christmas cheer as soon as it’s safe to do so!”
The Holiday train tour, which made a regular stop at Midhurst, was launched in 1999 and has raised $17.8 million and collected 4.8 million pounds of food items.
Live music has always been part of the CP Holiday Train tradition. To maintain that tradition, CP will produce a benefit concert, with details to be announced when they’re available.
Is there really life on Venus? How do we find out? – News 1130
In today’s Big Story podcast, last week, an unlikely research project made a startling discovery: Phosphine gas in the atmosphere of Venus. That’s something that, as far as we know, is created by living organisms. Our efforts to find signs of life on other worlds, and a lot of our space dreaming in general, tend to focus on Mars. But all of a sudden we need to take a closer look at our other planetary neighbour.
So how can we find out if there’s really life right next door? What do we know about Venus and why has it been so hard to figure out so far? What else could possibly cause the presence of Phosphine and what would it mean, to space exploration and everything else, if this is really true?
GUEST: Neel Patel, space reporter, MIT Technology Review
You can also find it at thebigstorypodcast.ca.
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