Archive for the 'Space' Category



Solar Power from Space: Moving Beyond Science Fiction

Yale Environment 360 has a useful survey of the current state of play in space-based solar power (SBSP). One tidbit new to me was this on Solaren

And last spring, the California-based Solaren Corporation signed a contract with Pacific Gas & Electric (PG&E) to provide 200 megawatts of power — about half the output of an average coal-fired power plant — by 2016 by launching solar arrays into space. Several other companies have announced their intentions to put up solar satellites of their own.

It is plausible that SBSP will become significant in the latter part of the 22nd century. For the next 50 years of zero carbon power we can only count on nuclear plus a small contribution from highly subsidized “renewables”.

Astrobotic Technology wins two lunar robot contracts…

“Red” Whittaker continues to make his mark on robotics. His Carnegie Mellon University spinoff Astrobotic has to be one of the top contenders for the Google Lunar X Prize. Here’s an excerpt of their press release which came to us via email today:

PITTSBURGH, PA – Nov. 23, 2009 – NASA today selected Astrobotic Technology and Carnegie Mellon University for two contracts to study Moon excavation robots and methods to simulate the one-sixth lunar gravity on Earth.

Lightweight excavation robots are key to recovering the water and hydrocarbon deposits at the Moon’s poles, which will enable explorers to “live off the land” rather than hauling all their supplies from Earth at great expense. New results from NASA probes released last week show that the water content in the polar soil is 10 to 30 times richer than previously thought, and in easier-to-access places than the floors of deep craters.

“We intend our robots to be prospectors for water and hydrocarbon resources, and then to demonstrate how they can be turned into rocket propellant and life support supplies,” said Dr. William “Red” Whittaker, founder of Astrobotic Technology and a research professor at the university’s Robotics Institute. “Creating propellant at the Moon will halve the cost of lunar exploration and advance the date when we can send human expeditions to Mars.”

Excavation is expected to be required to remove a top layer of dry soil covering ices deposited by comet and asteroid impacts.

The lunar gravity simulation study will examine the best ways to mimic the effects of the one-sixth lunar gravity via various active and passive gravity-offload mechanisms and ways to make the apparatus scaleable and transportable for field tests in challenging terrain.

A wild finish for the Lunar Lander Challenge

Jeff Foust at The Space Review covers the finals, won two challengers Amadillo and Masten:

(…) the final week of the 2009 Northrop Grumman Lunar Lander Challenge (NGLLC), a competition that is part of NASA’s Centennial Challenges prize program to develop vertical takeoff, vertical landing vehicles like those that one day may touch down on the Moon. For those who were paying attention, the event provided arguablt far more drama and excitement—and even controversy—than the Ares 1-X launch. And, in the long run, the outcome might prove to be as significant, if not more so, than that single launch from the Cape.

Down to the wire

Entering the last week of October—also the last week of the 2009 competition—two teams had already qualified for prizes: Armadillo Aerospace in Level Two (see “Playing the waiting (and winning) game”, The Space Review, September 14, 2009) and Masten Space Systems in Level One, after an earlier flight attempt short (see “A Xombie over Mojave”, The Space Review, September 21, 2009). But they couldn’t claim the prizes until that hectic last week, with three teams—BonNova, Masten, and Unreasonable Rocket—planning flight attempts in Levels One and Two.

Going into the final week Armadillo’s Level Two flight seemed to be the more secure of the two: after all, no one had successfully flown even a Level One flight before Armadillo made its successful Level Two attempt on September 12. Level Two has twice the flight time (180 seconds per leg) of Level One, and also requires a landing on simulated lunar terrain. Masten’s successful Level One flight, with its highly accurate landings, though provided an opening, as landing accuracy serves as the tiebreaker. Masten’s own Level One flight, though, could be bumped from second place (Armadillo claimed first place last year) if another team could perform an even more accurate landing.

(…) Masten’s Level Two success means that all the remaining prize money in the $2-million competition has now been claimed: Masten won $1 million for first place in Level Two and $150,000 for second place in Level One, while Armadillo won $500,000 for second place in Level Two, on top of the $350,000 they got last year for winning Level One. NASA and the X PRIZE Foundation honored the teams in a ceremony on Capitol Hill in Washington last week.

“We now have enough cash to get to regular revenue from doing suborbital flights, and possibly even profitability,” Masten said.

The end of the NGLLC leaves two companies, Armadillo and Masten, in good position to move ahead with suborbital vehicle development efforts. (…)

Splash! NASA moon crash struck lots of water

This is very good news. Any serious space exploration effort is much less costly if the moon can be used as a base — outside the earth’s deep gravity well. We can mine many of the required metals on the moon, but the cost of ferrying liquid water from earth is staggering.googlemoon.jpg

Suddenly, the moon looks exciting again. It has lots of water, scientists said Friday — a thrilling discovery that sent a ripple of hope for a future astronaut outpost in a place that has always seemed barren and inhospitable.

Experts have long suspected there was water on the moon. Confirmation came from data churned up by two NASA spacecraft that intentionally slammed into a lunar crater last month.

“Indeed, yes, we found water. And we didn’t find just a little bit. We found a significant amount,” said Anthony Colaprete, lead scientist for the mission, holding up a white water bucket for emphasis.

The lunar crash kicked up at least 25 gallons and that’s only what scientists could see from the plumes of the impact, Colaprete said.

Please continue reading…

Google Lunar X PRIZE — virtual tour

Very cool, check it out…

Tour the Moon in Google Earth – The Launch Pad -

As you explore this new software package, we hope you’ll also take the Google Lunar X PRIZE tour. Simply download this file to your computer and open it the new Google Earth, and you’ll be whisked away on a tour of the lunar surface with X PRIZE Founder Peter Diamandis and with X PRIZE Trustee and second generation astronaut Richard Garriott. They will use the software to imagine what we’ll all be watching in the near future, projecting the preliminary designs published by our teams onto the lunar surface. This tour is a rough draft, and will be revised and updated as often as possible to give you the best information about this new race back to the Moon.

The Google Earth Blog is covering the overall release in detail:

More on Moon in Google Earth… Google put on a really slick media event here today. Having Buzz Aldrin, Andrew Chaiken, and Anousheh Ansari help promote the new Moon features was awesome. …
Look at the Moon in Google Earth – Available Now!
What if the Eagle Landed on Earth? – pre-announcement

Continue reading…

Space Elevator challenge: NASA 2009 Power Beaming and Tether Challenges

NASA has announced the dates and terms for a key prize challenge.

SUMMARY: This notice is issued in accordance with 42 U.S.C. 2459f-1(d). The 2009 Power Beaming and Tether Challenges are now scheduled and teams that wish to compete may now register. The NASA Centennial Challenges Program is a program of prize contests to stimulate innovation and competition in space exploration and ongoing NASA mission areas. The 2009 Power Beaming Challenge is a prize contest designed to promote the development of new power distribution technologies. The 2009 Tether Challenge is a prize contest designed to develop very strong tether material for use in various structural applications. The Spaceward Foundation is administering both Challenges for NASA.

Red and The Robots

Red Whittaker’s rovers have already gone where no robot has gone before. Will one of them make it to the moon? …Now one of the world’s foremost roboticists, Whittaker, 60, recently added a racing title to his storied career. In November 2007 he won the $2 million top prize in the DARPA Urban Challenge with a robotic vehicle capable of driving itself in simulated traffic over a 60-mile course. His hard-charging Chevy Tahoe, Boss, outran all 11 finalists, winning the final event by 20 minutes.

As regular SeekerBlog readers know, science prizes work, producing big gains by leveraging private capital (instead of the typical “free money” taken from taxpayers and given to institutions by bureaucrats). An outstanding example is the DARPA Challenge and Urban Challenge prizes which produced real world vehicle robots. One of the standouts was the Carnegie Mellon team led by Red Whittaker. There is an excellent article at Air & Space Magazine, January 01, 2009 on the Carnegie Mellon roboticist’s spinoff company Astrobotic Technology.

The scraping of metal wheels on loose rocks and the clicking sounds of mechanical actuators alert me to the lunar rover’s presence before I see it. Turning, I come face to face with the robot as it emerges from a shallow ditch, its two mast-mounted camera “eyes” gazing at the ground, then tilting up to scout a way forward.

Less than five feet tall and three feet across, it’s an unassuming ’bot: a truncated pyramid plastered with solar panels, moving on four wheels tucked underneath. As it passes me, the rover steers off to the right and trundles slowly on a 500-yard trek toward its goal: a crude mockup of the Apollo 11 lunar lander base, spray-painted gold—an incongruous sight here on the banks of the Monongahela River in Pittsburgh.

In May 2010, a descendant of this rover is scheduled to visit the actual Apollo 11 landing site on the moon in an attempt to claim the $25 million Google Lunar X Prize for its creators, Astrobotic Technology. A spinoff from Carnegie Mellon University’s Field Robotics Center, Astrobotic is led by the center’s founder, William Whittaker, known to all as Red.

…On the business side, Whittaker got back in touch with David Gump, a space entrepreneur with whom he had worked in the 1990s on a commercial proposal, LunaCorp, to launch a rover to the Apollo 11 site. Within weeks of reviewing the Google prize requirements, he and Gump realized that making another try at the moon would require a new company, and capital. So Astrobotic was formed, with Gump as president.

For a team to claim the Google prize, its robot has to land on the lunar surface, travel at least 500 meters (about a third of a mile), and send high-definition images and data back to Earth within 24 hours. The first team to do so will win $20 million; bonus awards totaling $5 million are offered for extras such as photographing an artifact of previous lunar exploration, travelling more than 5,000 meters, and operating for a second (two-week) lunar day. To win the full award, the mission must be completed by the end of 2012, and 90 percent of the funding has to come from private sources. So far, 14 teams have announced their intention to compete for the prize.

Originally, Whittaker and crew targeted a landing at one of the moon’s poles; the reserves of water ice believed to exist there would be useful to future lunar explorers. But ultimately “cultural interest” drove the decision: Astrobotic now intends to touch down near the Apollo 11 landing site in the Sea of Tranquillity and head off on a “Tranquillity Trek”—visiting the site of the first moonwalks, an area about the size of a soccer field, and sending back photos and video in near-real time.

In order for the rover to photograph itself on the moon (another Google requirement), the camera team is positioning a large parabolic mirror on the robot’s side, much like a bus mirror. This should also yield a “money shot” showing sponsor logos, the rover, and (perhaps) Earth. (There’s also talk of having the rover’s bulldozer-like treads imprint a sponsor’s logo or other design in the lunar dust.)

…At the Jet Propulsion Laboratory in Pasadena, California, which has built all of NASA’s planetary rovers, Rob Manning has been watching the Google Lunar X Prize contenders with a mix of enthusiasm and skepticism. As the chief engineer for JPL’s Mars program, Manning has a keen sense of what it takes to land and rove around on another planet. “Building robots that fly off Earth, land on another body, then interactively explore in a highly hostile environment requires a dazzling array of skills and technologies,” he points out in an e-mail. “I hope that [Astrobotic] fully appreciates this reality. I live it every day.”

Manning holds the individual members of Whittaker’s team in high regard. “The good news is that they’ve got incredible talent,” he says. But, he adds, “this is outside the box. It’s not a car, it’s not the DARPA challenge, not a missile. It’s an all new thing—taking the best ideas from very different places and putting them together in a very weird, highly coupled way that’s got to work the first time.”

If Astrobotic can figure out how to test its systems in an integrated way on Earth, Manning thinks the missile-like landing concept can work, even with the ridiculously low (by JPL standards) $100 million budget. “I think they have a shot at it,” he says. When I tell him that Astrobotic hopes to raise enough money for two shots, doubling its chances of success, he is happy to hear it: “That’s wonderful…. I want them to win.”

Whittaker and his financial team are not counting on angels to bankroll them out of kindness. Their business plan is based on the proposition that, before NASA sets up a base on the moon, robots will be making maps and collecting data. If the Astrobotic rover makes it by 2012, or even 2014, when the Google prize expires, it will arrive years ahead of the astronauts.

Definitely read the whole thing. More at Astrobotic Technology and Carnegie Mellon Researchers Show Small Robots Can Prepare Lunar Surface for NASA Outpost.

Out of this world

The astonishing photo (above) is real, not something produced by photoshop. It was taken last Friday by Cambridge University Spaceflight, a team of students who have entered a competition to send a low cost rocket into space. It shows one of my children’s science fiction books, Dark Visitor, held out against a black sky with the curved earth below. That blue shimmer you see along the earth’s curvature is the atmosphere.

The photo was one of thousands taken during a dawn launch of their balloon Nova 8. They were testing new telemetry and tracking systems, all highly successful as it turned out. There were also several small cameras taking still and video pictures. The project calls for a rocket to be launched from a balloon at its top altitude, and to reach 100km high with its small payload. In July the team twice broke the altitude record for an amateur balloon; typically they reach about 33.25km, so the rocket will have a head start without atmospheric resistance.

More…:

White Knight 2, SpaceShipTwo's mother ship, greets the dawn

I do hope Branson’s venture becomes a Harvard Business School case study in entreprenuership.

Virgin Group head Sir Richard Branson unveiled the latest addition to his air- and spaceline fleet at the Mojave Airport in California today, accompanied by the craft’s chief designer, Burt Rutan.

The White Knight 2 is a four-engine jet that will carry an 8-seat spaceship called SpaceShipTwo to an altitude of 48,000 feet so that the spaceship can drop off and fire its rocket engine for a brief run to suborbital space. Branson’s Virgin Galactic hopes to begin regularly scheduled passenger service to space in 2010.

White Knight 2, Branson, and Rutan: Virgin Galactic owner Richard Branson (left) and air- and spacecraft designer Burt Rutan wave from the cockpit of the White Knight 2. Photo by Michael Belfiore

Rutan’s company Scaled Composites made history in 2004 with the world’s first privately funded manned spaceflights by its three-seat SpaceShipOne, which was carried aloft by the original White Knight. The White Knight 2 features two fuselages, each with its own cabin, connected by a single continuous wing arching between them, where the spaceship will ride. With the wing span of a B-29 bomber, it is the largest all-carbon-fiber aircraft yet built.

On hand to christen the White Knight Two outside a Scaled hangar was Branson’s mother, Eve. Not coincidentally, Eve is also the name of the mother ship. “If you’re going to name a mother ship,” Branson quipped to a gathering of perhaps two hundred reporters and dignitaries, including Apollo 11 moonwalker Buzz Aldrin, “you might as well name it after your own mother.”

Alien communications via neutrinos?

SETI hasn’t yet found any coherent signals. Could the aliens be beaming neutrinos instead of electromagnetic waves?

John Learned of the University of Hawaii and colleagues have worked out that advanced alien civilizations could send messages within the Milky Way using neutrinos, and that these messages could be picked up using neutrino detectors currently under construction here on Earth.

More at Physics World.



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