The Defense Advanced Research Projects Agency (DARPA) has awarded Gryphon Technologies $14 million to develop a nuclear thermal propulsion system for the U.S. military. Part of DARPA’s Demonstration Rocket for Agile Cislunar Operations (DRACO) program, the High-Assay Low Enriched Uranium (HALEU) Nuclear Thermal Propulsion (NTP) system will be used to enable the military to carry out missions in cislunar space, meaning the area between the Earth and the orbit of the moon.
“A successfully demonstrated NTP system will provide a leap ahead in space-propulsion capability, allowing agile and rapid transit over vast distances as compared to present propulsion approaches,” Tabitha Dodson, Gryphon’s chief engineer on the support team and a national expert in NTP systems, said in a statement.
The militarization of space, this time largely involving the United States and China, has been in the news in recent years in a way that it hasn’t since the decades-old Space
Scripps Research chemist Matthew Disney, PhD, and colleagues have created drug-like compounds that, in human cell studies, bind and destroy the pandemic coronavirus’ so-called “frameshifting element” to stop the virus from replicating. The frameshifter is a clutch-like device the virus needs to generate new copies of itself after infecting cells.
“Our concept was to develop lead medicines capable of breaking COVID-19’s clutch,” Disney says. “It doesn’t allow the shifting of gears.”
Viruses spread by entering cells and then using the cells’ protein-building machinery to churn out new infectious copies. Their genetic material must be compact and efficient to make it into the cells.
The pandemic coronavirus stays small by having one string of genetic material encode multiple proteins needed to assemble new virus. A clutch-like frameshifting element forces the cells’ protein-building engines, called ribosomes, to pause, slip to a different gear, or reading frame, and then restart protein assembly anew,
Microsoft’s Bing search engine has beaten out competitor DuckDuckGo and will now be offered as an option for Android users during setup in select European countries, according to the results of Google’s most recent default search engine auction. DuckDuckGo, previously the most frequently offered alternative, was not pleased, and the company slammed Google’s auction process as pay-to-play.
“This EU antitrust remedy is only serving to further strengthen Google’s dominance in mobile search by boxing out alternative search engines that consumers want to use and, for those search engines that remain, taking most of their profits from the preference menu,” DuckDuckGo wrote in a blog post published yesterday. “The auction model is fundamentally flawed and must be replaced.”
Google hosts the auctions in response to a landmark 2018 European Union antitrust ruling, which fined the dominant search giant a record-breaking €4.3 billion ($5 billion) after finding Google was illegally tying its
The Defence Research and Development Organisation (DRDO) performed a major technological feat on September 7 when it flew a cruise vehicle at a hypersonic speed of Mach six for 20 seconds. The DRDO called the cruise vehicle Hypersonic Technology Demonstrator Vehicle (HSTDV). The centrepiece of the HSTDV was the indigenously developed air-breathing scramjet engine, which formed the HSTDV’s propulsion system. If the mission’s aim was to prove this air-breathing scramjet engine in flight, it was achieved.
The critical technologies developed for the HSTDV mission were the scramjet engine and its ignition, sustaining the ignition, ethylene fuel, generation of maximum energy from the engine, development of materials to take care of the high temperatures that occurred due to air friction on the leading edges of the cruiser’s wings, tail surface and nose tip, and controlling the HSTDV with minimum drag and maximum thrust.
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Sep 28, 2020 (The Expresswire) —
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If the actions of global automakers are anything to go by, the internal combustion engine, which powered automobiles for over a century, could become obsolete within a few decades. But the shift to electric vehicles (EV), slow to materialize at first, is now accelerating on a global scale due to more stringent government emissions regulations, falling costs, an increasingly positive public attitude towards a growing number of EV choices and a societal reckoning about climate change.
California said this week it plans to phase out sales of conventional new gasoline-powered cars by 2035 in favor of zero-emission vehicles that run on electricity. Governor Gavin Newsom’s executive order no doubt faces a
In the wake of a big technical TWAB regarding Destiny 2 this past week, the good old question of the series getting a “new engine” has surfaced again.
Some are interpreting the recent comments about all the changes to the engine as a smokescreen for the fact that yes, Destiny is effectively getting a new engine. Or if not, they’re just preparing to replace the current engine with a new one down the road and these are just temporary patches.
Neither of these things are true. And in fact, Bungie has come out to say explicitly that no, Destiny is never getting a fully new engine.
MORE FROM FORBESUnderstanding Destiny 2’s Massive New Technical Changes For Beyond LightBy Paul Tassi
This is directly from Chris Kosanovich, Engineering Manager at Bungie, who responded to the frequent engine question in a reddit AMA two full months ago,
I tested a 2021 Chevy Trailblazer, with all-wheel-drive in the well-optioned Activ trim.
The as-tested price was $32,350, but the vehicle can be had for $19,000, base.
The Trailblazer borrows some snazzy design cues from the larger Chevy Blazer. These set it apart from the competition, which includes compact crossovers from Kia, Mazda, and Honda.
The Trailblazer has two engine and transmission options. My tester had a 155-horsepower, turbocharged, three-cylinder powerplant that offered nice punch at lower speeds, but that was slow to 60 mph and not as easy on gas as I thought it would be.
What sets the Trailblazer apart from the competition is a suite of technology features, ranging from infotainment to wifi connectivity to driver-assist, that are enviable in a budget package.
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