On Saturday, NASA plans to launch the Parker Solar Probe probe, which will use a high-tech heat shield to fly closer to the sun than any mission in history. The robot is designed to study the sun's super-hot atmosphere and help scientists predict space weather events that can wreak havoc on Earth.
On Saturday, NASA plans to launch the Parker Solar Probe probe, which will use a high-tech heat shield to fly closer to the sun than any mission in history. The robot is designed to study the sun's super-hot atmosphere and help scientists predict space weather events that can wreak havoc on Earth.
Iran announces more defiant military advances and remains unstoppablefor now.
In what may be the greatest protest ever, two Philadelphia police precincts received pairs of underwear from a local activist group Tuesday morning. However, the gifts were not meant to inspire thoughts of romance or affection. Instead, the packages were an ingenious protest designed to highlight a disturbing, but…
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Man wundert sich immer noch, warum wir noch nicht ausgestorben sind...
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As part of the awareness campaign for the risks of smoking, the Medical Corps presented a series of steps designed to reduce tobacco use among IDF soldiers.
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The most beautiful islands in Western Washington! The San Juan Islands are gorgeous in so many different ways. From the cool quiet days of winter to the bustling hot summer days, Friday Harbor makes for a great escape. While the main draw to the island is kayaking with orcas, on any given visit you can expect to see a variety of wildlife. The orcas, though more prevalent in June, July and August pass through here every month of the year. Low tide walks unveil sea stars, anemones and crabs, with... Читать дальше...
Over the course of seven generations of Pokémon, the series has produced dozens of Legendary beasts. Here's our definitive ranking of the best.
Abstract: Expandable modules for use in space and on the Moon or Mars offer a great opportunity for volume and mass savings in future space exploration missions. This type of module can be compressed into a relatively small shape on the ground, allowing them to fit into space vehicles with a smaller cargo/fairing size than a traditional solid, metallic structure based module would allow. In April 2016, the Bigelow Expandable Activity Module (BEAM) was berthed to the International Space Station (ISS). Читать дальше...
Abstract: The Orion Crew Module (CM) is nearing completion for the next flight, designated as Exploration Mission 1 (EM-1). For the uncrewed mission, the flight path will take the CM through a Perigee Raise Maneuver (PRM) out to an altitude of approximately 1800 km, followed by a Trans-Lunar Injection burn, a pass through the Van Allen belts then out to the moon for a lunar flyby, a Distant Retrograde Insertion (DRI) burn, a Distant Retrograde Orbit (DRO), a Distant Retrograde Departure (DRD) burn... Читать дальше...
Abstract: No abstract available
Abstract: Performance of Extra-Vehicular Activities (EVA) has been and will continue to be a critical capability for human space flight. Human exploration missions beyond LEO will require EVA capability for either contingency or nominal activities to support mission objectives and reduce mission risk. EVA systems encompass a wide array of products across pressure suits, life support systems, EVA tools and unique spacecraft interface hardware (i.e. EVA Translation Paths and EVA Worksites). In a fiscally...
Diversity is a strength in some societies. In others, it is a source of unresolved tension that can erupt into fear, hatred, and violence. Hear from Lee C. Bollinger, Jelani Cobb, Paola Mendoza, Derryck Green, and Jhoshan Jothilingam. This program is part of the Shades of Red and Blue series, presented by The Ethics Centre, and co-sponsored by the Carnegie Council for Ethics in International Affairs and Bard Globalization and International Affairs program. This program was recorded on April 1, 2017.
Abstract: NASA-STD-6001B states "all nonmetals tested in accordance with NASA-STD-6001 should be retested every 10 years or as required by the responsible program/project." The retesting of materials helps ensure the most accurate data are used in material selection. Manufacturer formulas and processes can change over time, sometimes without an update to product number and material information. Material performance in certain NASA-STD-6001 tests can be particularly vulnerable to these changes, such... Читать дальше...
Abstract: No abstract available
In this week's news, Novak Djokovic’s aim for Andre Agassi, Roger Federer’s honor, Stan Wawrinka reveals his dream backhand.
Ali Soufan, now CEO of the Soufan Group and author of "Anatomy of Terror," talks with VOA's Carol Castiel about the need for strategy in the war against terrorism.
Abstract: No abstract available
Abstract: Understanding the combustion behavior of materials in the elevated oxygen environments of habitable spacecraft is of utmost importance to crew safety and mission success. Currently, certification for unrestricted flight usage of a material with respect to flammability involves passing the Upward Flame Propagation Test of NASA-STD-6001B (Test 1). This test evaluates materials in a standardized test configuration for two failure criteria: self-extinguishment within 15 cm (6 in.) and the propens...
Abstract: No abstract available
Abstract: No abstract available
Tip no. 6: "Work with someone you trust, but avoid family and friends."
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Abstract: The second Cranked-Arrow Wing Aerodynamics Project, International, coordinated project has been underway to improve high-fidelity computational-fluid-dynamics predictions of slender airframe aerodynamics. The work is focused on two flow conditions and leverages a unique flight data set obtained with the F-16XL aircraft for comparison and validation. These conditions, a low-speed high-angle-of-attack case and a transonic low-angle-of-attack case, were selected from a prior prediction campaign... Читать дальше...
