Antimatter Space Propulsion Possible within a Decade

2016-03-15

Antimatter Space Propulsion Possible within a Decade
Dreams of antimatter space propulsion are closer to reality than most rocket scientists could ever imagine, says former Fermilab physicist Gerald Jackson. In fact, if money were no object, he says an antimatter-driven spacecraft prototype could be tested within a decade. To that end, next month, Jackson and his Chicago-based Hbar Technologies firm are launching a $200,000 Kickstarter campaign to crowdfund the next phase of its antimatter propulsion research.

With propulsion velocities of some 40% of the speed of light, such technology could eventually cut travel times to the nearby Alpha Centauri star system to less than a decade. And more immediately, it would allow NASA to send a New Horizons-type probe to our outer solar system in a year or less.

If you send a probe into interstellar space, you don’t want the propulsion system to weigh a million times more than the payload itself, Jackson, President of Hbar Technologies, told me.

“So, my Hbar partner, physicist Steven Howe, and I came up with a very light propulsion system whose mass was comparative to the payload — an antimatter sail,” said Jackson. Funding dried up, so next month were going to try and restart this work.

In a paper presented at the 2003 Particle Accelerator Conference in Portland, Or., Jackson and Howe used NASA funding to outline a plan for a small antimatter interstellar probe that would only need 17 grams of antihydrogen to travel to Alpha Centauri. With velocities touching a tenth of lightspeed, they estimate the probe would speed across four light years in only 40 years.
One main challenge for such rockets would be simply finding a sufficient supply of antimatter fuel. In nature, the center of our own Milky Way galaxy is aglow in the x-ray emission of antimatter annihilation, which is almost certainly associated with a jet of streaming high-energy particles emanating from our galaxys central supermassive black hole. On Earth, by contrast, most antimatter has to be generated in particle physics accelerators at laboratories like Fermilab or CERN.

But all total, the now defunct Tevatron accelerator at Fermilab made much less than one gram of antimatter; most of which was held in storage rings for a day or so at most.

Antimatter is just like normal matter, but all the particles have the opposite charge, James Annis, a physicist at Fermilabs Center for Particle Astrophysics, told me. That means an antimatter electron has the opposite electric charge of a normal matter electron and also the ability to annihilate if it ‘finds its own partner particle.

Even so, Annis says normally the idea for anti-matter propulsion has been to take as much of that energy as possible and use it to heat hydrogen to high temperatures which is then blown out the back of a rocket.

The problem with working with antimatter is that one has to keep it from touching matter, which is surprisingly hard to do, said Annis. In Star Trek, they have solved the containment [problem] somehow and are able to store lots of antimatter.

However, Jackson and Howe think that, on paper at least, they have solved the containment issue and hope to use crowdfunding to hone their earlier antimatter designs for a robotic interstellar probe.

Crowdfunding may be a good way to show interest in the project when it comes time to find bigger investors or governmental support, said Jackson. We will then need funding on the order of $100 million to actually build small prototype propulsion and power systems.

We use the antiproton as a spark plug to induce fission, explains Jackson. And from this fission, he says, emerges what nuclear physicists term lighter fission daughter byproducts.

Each such antimatter annihilation releases two billion electron volts (2 GeV) of energy. Thus, an antimatter rocket, which would only be launched outside of Earths atmosphere, could provide a lot more thrust than a chemical or even nuclear rocket and use tens of thousands of times less fuel , says Jackson.

As envisioned in Jackson and Howes original design, a small antimatter robotic probe would consist of four basic components: a depleted uranium-coated carbon sail; a solid antihydrogen storage unit; an antiproton-driven electrical power supply, and a small payload instrument package at the back of the spacecraft.

Upon being struck by antihydrogen protons, a portion of the depleted uranium situated on coated foil inside the spacecraft is caused to fission. This creates two fission daughter byproducts which typically are emitted back-to-back with equal momentum. While the two daughters may not be exactly alike atomically, in order to adhere to known laws of physics, their momentum inherently must be equal, says Jackson. One fission daughter heads into the direction of the spacecrafts uranium-coated carbon sail and is decelerated and absorbed; imparting its momentum into the sail. The other escapes into space in the form of conventional propellant exhaust. Its the opposing forces of their powerful kinetic energies that enable the spacecraft to reach such high speeds.

Jackson would like to take a portion of the initial $200,000 he and Stowe are seeking to build a device to measure such thrust.

The biggest tech challenge says Jackson is the getting money to produce enough antiprotons to do the actual tests. Such antiprotons are usually generated in particle accelerators by aiming fast moving hydrogen atoms into a nickel target.

For every 100 protons that hit the target, there can be yields of up to one anti-proton, said Jackson.

When could an antimatter propulsion prototype be tested in space?

If the money were there, we could do it in ten years, says Jackson, noting that it would take a $100 million to design an Earth-based technology test. But youre talking billions to send spacecraft out to real destinations, said Jackson.

But he says if the will is there, spacecraft capable of cruising along at 40% of lightspeed should be achievable within the next two to three decades.




FAA Small Drone Rule Lets Unmanned Aircraft Soar

2017-09-11
FAA Small Drone Rule Lets Unmanned Aircraft Soar
A host of new users is changing the world of commercial aviation thanks in large part to the Federal Aviation Administration’s (FAA) small unmanned aircraft rule, Part 107 (PDF), which has now been in place for a year.

US Naval Research Lab Tests Stackable CICADA Microdrones Swarm

2017-08-22
US Naval Research Lab Tests Stackable CICADA Microdrones Swarm
The U.S. Naval Research Lab has been working on its CICADA (Close-In Covert Autonomous Disposable Aircraft) drones since at least 2011. The tiny drones are designed to be carried aloft by other aircraft and dropped, whereupon they’ll use GPS and little fins to glide to within 15 feet of their destination.

The Drone World Expo 2017 Interviews  Hector Ubiñas

2017-08-22
The Drone World Expo 2017 Interviews Hector Ubiñas
In the third of a series of interviews with key figures involved in the success of Drone World Expo, we talked to for Hector Ubiñas, Aviation Services Manager, San Diego Gas and Electric. Hector joined SDG&E in September 2016 and has been overseeing the Unmanned Aerial System (UAS) program since starting with the company. In this role, Hector is responsible for the daily operations of the UAS program and continuing to develop new work methods for its application in the utility industry.

Swarms of Drones Test New Dogfighting Skills

2017-04-25
Swarms of Drones Test New Dogfighting Skills
Aerial dogfighting began more than a century ago in the skies over Europe with propeller-driven fighter aircraft carried aloft on wings of fabric and wood. An event held recently in southern California could mark the beginning of a new chapter in this form of aerial combat.

13 Takeaways from The White House Workshop

2016-08-08
13 Takeaways from The White House Workshop
The White House launched a new effort Tuesday to help increase the use of drones and showcased how government agencies have become a proving ground for a wide array of new drone concepts and technologies.

New Report: Drones in Public Safety and First Responder Operations

2016-07-24
New Report: Drones in Public Safety and First Responder Operations
It may not seem like it, but drones are still in their infancy and only proving themselves through the rigorous testing done privately, commercially, and by state and federal government agencies. Despite the tangible benefits that drones can provide, the public has mixed sentiments about their use by law enforcement, firefighting, and search & rescue operations.

Drone World Expo  Exclusive Interviews  Mark Bathrick

2016-07-14
Drone World Expo Exclusive Interviews Mark Bathrick
We wanted to find out more about the team behind Drone World Expo – what makes them tick, what motivates them and what are the secrets behind the success of the event. We interviewed Advisory Board member Mark L. Bathrick who directs a nationwide aviation services business for the U.S Department of the Interior (DOI) overseeing the safe operation of over 1,200 contracted and government-owned manned and unmanned aircraft across a wide range of business applications.

Rwanda Readies Life-Saving Drone Delivery System

2016-07-03
Rwanda Readies Life-Saving Drone Delivery System
This summer, small autonomous airplanes will begin carrying life-saving blood to 20 hospitals and healthcare centers across Western Rwanda, Africa, in one of the first-of-its-kind drone-based delivery demonstrations.

Tree-Planting Drones

2016-06-28
Tree-Planting Drones
Beaverton, Oregon-based drone startup DroneSeed created a drone with a device that fires seeds into the ground using compressed air in an effort to reforest the Pacific Northwest, and eventually forests around the world.

FAA Finalizes Rules for Small Unmanned Aircraft Systems

2016-06-21
FAA Finalizes Rules for Small Unmanned Aircraft Systems
Today, the Department of Transportation’s Federal Aviation Administration has finalized the firstoperational rules for routine commercial use of small unmanned aircraft systems (UAS or “drones”), opening pathways towards fully integrating UAS into the nations airspace. These new regulations work to harness new innovations safely, to spur job growth, advance critical scientific research and save lives.


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