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YubNub News
YubNub News
34 w

NEW: Republicans Outpace Democrat Voter Registrations In Blue State
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NEW: Republicans Outpace Democrat Voter Registrations In Blue State

The New Jersey Republican Party were able to outpace their Democratic Party rivals in the deep blue state, as the GOP outpaced Democrats in terms of new voter registrations. Voter registration data for…
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YubNub News
YubNub News
34 w

Feel-Good Friday: The Resurrection of Western North Carolina Is an Example of America at Its Finest
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Feel-Good Friday: The Resurrection of Western North Carolina Is an Example of America at Its Finest

After the late September devastation in Western North Carolina from Hurricane Helene and the heroic rescue and recovery efforts, the region continues to be given a shot in the arm, thanks to Americans…
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YubNub News
YubNub News
34 w

Griswold’s Office Pushes Back Against Trump Campaign’s Demand to Stop Colorado Mail Ballot Processing After Voting System Password Leak
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Griswold’s Office Pushes Back Against Trump Campaign’s Demand to Stop Colorado Mail Ballot Processing After Voting System Password Leak

Colorado Secretary of State Jena Griswold President Donald Trump’s campaign issued a formal demand on Wednesday, calling on Colorado Secretary of State Jena Griswold (D) to temporarily cease processing…
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YubNub News
YubNub News
34 w

STORY UPDATE: After Pressure, Nashville TV Station Will Allow Commercial Featuring Trump Impersonator
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STORY UPDATE: After Pressure, Nashville TV Station Will Allow Commercial Featuring Trump Impersonator

Last night, we told you about a company called D.T. McCall & Sons, which created a TV commercial featuring Trump impersonator Shawn Farash. Despite the fact that the commercial was innocent and quite…
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Science Explorer
Science Explorer
34 w

Multimode Propulsion Could Revolutionize How We Launch Things to Space
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Multimode Propulsion Could Revolutionize How We Launch Things to Space

In a few years, as part of the Artemis Program, NASA will send the “first woman and first person of color” to the lunar surface. This will be the first time astronauts have set foot on the Moon since the Apollo 17 mission in 1972. This will be followed by the creation of permanent infrastructure that will allow for regular missions to the surface (once a year) and a “sustained program of lunar exploration and development.” This will require spacecraft making regular trips between the Earth and Moon to deliver crews, vehicles, and payloads. In a recent NASA-supported study, a team of researchers at the University of Illinois Urbana-Champaign investigated a new method of sending spacecraft to the Moon. It is known as “multimode propulsion,” a method that integrates a high-thrust chemical mode and a low-thrust electric mode – while using the same propellant. This system has several advantages over other forms of propulsion, not the least of which include being lighter and more cost-effective. With a little luck, NASA could rely on multimode propulsion-equipped spacecraft to achieve many of its Artemis objectives. The paper describing their investigation, “Indirect optimal control techniques for multimode propulsion mission design,” was recently published in Acta Astronautica. The research was led by Bryan C. Cline, a doctoral student in the Department of Aerospace Engineering at the University of Illinois Urbana-Champaign. He was joined by fellow aerospace engineer and PhD Candidate Alex Pascarella, and Robyn M. Woollands and Joshua L. Rovey – an assistant professor and professor with the Grainger College of Engineering (Aerospace Engineering). Artist’s impression of the ESA LISA Pathfinder mission. Credit: ESA–C.Carreau To break it down, a multimode thruster relies on a single chemical monopropellant – like hydrazine or Advanced Spacecraft Energetic Non-Toxic (ASCENT) propellant – to power chemical thrusters and an electrospray thruster (aka. colloid thruster). The latter element relies on a process known as electrospray ionization (ESI), where charged liquid droplets are produced and accelerated by a static electric field. Electrospray thrusters were first used in space aboard the ESA’s LISA Pathfinder mission to demonstrate disturbance reduction. By developing a system that relies on both that can switch as needed, satellites will be able to perform propulsive manuevers using less propellant (aka. minimum-fuel transfers). As Cline said in a Grainger College of Engineering press release: “Multimode propulsion systems also expand the performance envelope. We describe them as flexible and adaptable. I can choose a high-thrust chemical mode to get someplace fast and a low-thrust electrospray to make smaller maneuvers to stay in the desired orbit. Having multiple modes available has the potential to reduce fuel consumption or reduce time to complete your mission objective.” The team’s investigation follows a similar study conducted by Cline and researchers from NASA’s Goddard Spaceflight Center and the aerospace advisory company Space Exploration Engineering, LLC. In a separate paper, “Lunar SmallSat Missions with Chemical-Electrospray Multimode Propulsion,” they considered the advantages of multimode propulsion against all-chemical and all-electric approaches for four design reference missions (DRMs) provided by NASA. For this latest investigation, Cline and his colleagues used a standard 12-unit CubeSat to execute these four mission profiles. .Earth–Mars minimum-fuel trajectory when the CubeSat is coasting, as well as in mode 1-low thrust and mode 2-high thrust. Credit: UIU-C “We showed for the first time the feasibility of using multimode propulsion in NASA-relevant lunar missions, particularly with CubeSats,” said Cline. “Other studies used arbitrary problems, which is a great starting point. Ours is the first high-fidelity analysis of multimode mission design for NASA-relevant lunar missions.” Multimode propulsion is similar in some respects to hybrid propulsion, where two propulsion systems are combined to achieve optimal thrust. A good example of this (though still unrealized) is bimodal nuclear propulsion, where a spacecraft relies on a nuclear-thermal propulsion (NTP) and nuclear-electric propulsion (NEC) system. While an NTP system relies on a nuclear reactor to heat hydrogen or deuterium propellant and can achieve a high rate of acceleration (delta-v), an NEC system uses the reactor to power an ion engine that offers a consistent level of thrust. A key advantage multimode propulsion has over a hybrid system is a drastic reduction in the dry mass of the spacecraft. Whereas hybrid propulsion systems require two different propellants (and hence, two separate fuel tanks), bimodal propulsion requires only one. This not only saves on the mass and volume of the spacecraft, but makes them cheaper to launch. “I can choose to use high-thrust at any time and low-thrust at any time, and it doesn’t matter what I did in the past,” said Cline. “With a hybrid system, when one tank is empty, I can’t choose that option.” To complete each of the design reference missions for this project, the team made all decisions manually – i.e., when to use high-thrust and low-thrust. As a result, the trajectories weren’t optimal. This led Cline to develop an algorithm after completing the project that automatically selects which mode would lead to an optimal trajectory. This allowed Cline and his team to solve a simple two-dimensional transfer between Earth and Mars and a three-dimensional transfer to geostationary orbit that minimizes fuel consumption. As Cline explained: “This was an entirely different beast where the focus was on the development of the method, rather than the specific results shown in the paper. We developed the first indirect optimal control technique specifically for multimode mission design. As a result, we can develop transfers that obey the laws of physics while achieving a specific objective such as minimizing fuel consumption or transfer time.” “We showed the method works on a mission that’s relevant to the scientific community. Now you can use it to solve all kinds of mission design problems. The math is agnostic to the specific mission. And because the method utilizes variational calculus, what we call an indirect optimal control technique, it guarantees that you’ll get at least a locally optimal solution.” Artist rendering of an Artemis astronaut exploring the Moon’s surface during a future mission. Credit: NASA The research is part of a project led by Professor Rovey and a multi-institutional team known as the Joint Advanced Propulsion Institute (JANUS). Their work is funded by NASA as part of a new Space and Technology Research Institute (STRI) initiative. Rovey is responsible for leading the Diagnostics and Fundamental Studies team, along with Dr. John D. Williams, a Professor of Mechanical Engineering and the Director of the Electric Propulsion & Plasma Engineering Laboratory at Colorado State University (CSU). As Cline indicated, their work into multimode propulsion could revolutionize how small spacecraft travel between Earth and the Moon, Mars, and other celestial bodies: “It’s an emerging technology because it’s still being developed on the hardware side. It’s enabling in that we can accomplish all kinds of missions we wouldn’t be able to do without it. And it’s enhancing because if you’ve got a given mission concept, you can do more with multimode propulsion. You’ve got more flexibility. You’ve got more adaptability. “I think this is an exciting time to work on multimode propulsion, both from a hardware perspective, but also from a mission design perspective. We’re developing tools and techniques to take this technology from something we test in the basement of Talbot Lab and turn it into something that can have a real impact on the space community.” Further ReadingL University of Illinois Urbana-Champaign, Acta Astronautica The post Multimode Propulsion Could Revolutionize How We Launch Things to Space appeared first on Universe Today.
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Survival Prepper
Survival Prepper  
34 w ·Youtube Prepping & Survival

YouTube
A Week Without Power: What We Learned About Our Preps Off Grid!
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Intel Uncensored
Intel Uncensored
34 w

MICHAEL JACKSON: Jailed For Protecting His Daughter From The Jab on Relentless (CANADA)
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MICHAEL JACKSON: Jailed For Protecting His Daughter From The Jab on Relentless (CANADA)

31st Oct 2024 - MICHAEL JACKSON: Jailed For Protecting His Daughter From The Jab on Relentless 31st October 2024 Episode 81. "I am a Saskatchewan father fighting for justice in a country that has none. In the fall of 2021, I withheld my 7 year old daughter, Sarah, from her mother and went into hiding to prevent her from being vaccinated. I was arrested, denied bail, thrown in a supermax jail for a year, tried twice on the same charge, and found guilty both times. I am currently awaiting sentencing, and most importantly, the Courts of Saskatchewan have denied me and Sarah to speak since my arrest almost 3 years ago." Michael Jackson. UTL COMMENT:- Good this Guy showed basic (and RARE these days!!!) Common Decency and Did the Right Thing for His Daughter.... WITH THANKS TO CAFE LOCKED OUT. https://rumble.com/c/Cafelockedout Follow Michael on X: https://x.com/Godsoffense Support Michael: https://www.givesendgo.com/GD8CK?utm_source=sharelink&utm_medium=copy_link&utm_campaign=GD8CK Courage Is The Cure relies on your support to continue. If you have the means, please support or become a member of Courage Is The Cure here: https://www.buymeacoffee.com/couragethecure Follow Courage Is The Cure on: YouTube https://www.youtube.com/channel/UCm-QF5yLj7f00QxX8SZosbQ Relentless Interviews on rumble https://rumble.com/c/CourageIsTheCure Morning Rise Episodes on rumble https://rumble.com/c/c-5167796 Facebook https://www.facebook.com/courageisthecure/ Twitter https://twitter.com/RobynRJS Instagram https://www.instagram.com/courageisthecure/ Prerecorded 31st October 2024 Streamed 31st October 2024
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Intel Uncensored
Intel Uncensored
34 w

Don't attract Demons into your home. Protect yourself and your family.
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Don't attract Demons into your home. Protect yourself and your family.

Do not lack in knowledge. The information you seek is out there. Be vigilant. A Christian motivational video that aims to leave you blessed, inspired and encouraged as well as strengthening your prayer life and daily walk with God. As you listen to this daily devotional video may Jesus Christ light up your life! ►An original video created by Grace for Purpose and delivered by our team speakers. Our faith based content aims to bring biblical teachings to life! Our team aims to produce content that is focused on the scriptures, encouraging prayers, and insightful teachings For any inquiries, contact us: teamg4p@gmail.com Source: Grace for Purpose on YouTube.
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AllSides - Balanced News
AllSides - Balanced News
34 w

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Supreme Court upholds Pennsylvania provisional ballot ruling, in a major loss for GOP

The Supreme Court on Friday upheld a state court ruling that allowed for the counting of certain provisional ballots, in a major setback for the state GOP and Republican National Committee just four days before the election. The Republican National Committee and the state GOP filed an emergency appeal to the nation's top court last week seeking to temporarily halt a Pennsylvania Supreme Court ruling that ordered the state to count voters whose provisional ballots had been incorrectly filled out...
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Worth it or Woke?
Worth it or Woke?
34 w

Tulsa King (season 1 )
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Tulsa King (season 1 )

In The Tulsa King, you meet Dwight Manfredi, a no-nonsense New York mafia capo fresh outta prison and exiled to Tulsa, Oklahoma, where he’s tasked with setting up shop for his boss. Season 1 thrusts Dwight into the Wild West of small-town crime, where he recruits an unlikely crew and starts ruffling feathers—both local and back home.      The post Tulsa King (season 1 ) first appeared on Worth it or Woke.
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