Robotics desert test provides NASA with new set of wheels for moon


September 16, 2009

Every year, for two weeks in the Arizona desert at Black Point Lava Flow, NASA's Desert Research and Technology Studies group (Desert RATS) conducts technology development tests in anticipation of lunar exploration. Teams of engineers and geologists from several NASA laboratories as well as a variety of private and academic partners participated in this year's test, including two key members from ASU's School of Earth and Space Exploration.

New for this year was an intensive simulated mission during which two crew members, an astronaut and a geologist, lived for more than 300 hours inside NASA's new lunar wheels, the Lunar Electric Rover (LER). The explorers scouted the area for features of geological interest then donned spacesuits and conducted simulated moonwalks to collect samples. The crew also docked to a simulated habitat, drove the rover across difficult terrain, performed a rescue mission and made a four-day traverse across the rough landscape. Download Full Image

"We are continuously working to meet the challenges of a human outpost on the moon," says James Rice, faculty research associate in the school and principal investigator of one of the study's geology traverses. "To meet these challenges, scientists and engineers must conduct hands-on field tests and research here on earth to better prepare and understand the complex challenges that will be encountered on the moon."

Analogs are conducted to test robotics, vehicles, habitats and in-situ resource utilization in realistic environments that will aid astronauts, engineers and scientists as they define ways to combine human and robotic efforts to enhance scientific exploration. The Arizona desert is well suited for testing technologies and procedures for future human-robotic exploration in extreme environments.

"You have to test hardware and concepts in a real-world environment with real geology, slopes, rocks, dust ... and the unexpected," Rice says. "It can't be done in a controlled laboratory. The terrain of Black Point Lava Flow contains challenging topography for LER operations and also contains lunar and Mars analog geomorphology and geology."

Rice was in charge of making traverse routes or paths that the rover and crew followed during the simulation. He had to factor in science objectives, rover driving speed, time for the crew to put on and take off spacesuits before and after geology investigations, and the time required to drive to the next station.

"We had a very detailed timeline from Mission Control that we had to work with to make sure we achieved our science goals," says Rice, who has been involved with the field tests for about six years. "Sometimes we had issues with loss of communications, equipment or the rover and this caused the whole operation to get behind on the timeline. It was very realistic."

Kip Hodges, founding director of the school in ASU's College of Liberal Arts and Sciences, and science team member of Desert RATS, has been involved with this year's tests on a number of levels. He was the principal scientist of the K10 robot, which was developed at NASA's Ames Research Center and deployed prior to the simulated mission to identify areas of interest for the crew, and he served in the science "backroom" for the LER human tests.

"The K10 robot was employed in these tests in order to evaluate the added value of robotic reconnaissance of a planetary landscape prior to sending humans into the field for scientific research," says Hodges. "While the final field test results are not yet in, I think that my collaborators and I are extremely pleased with the exercise and looking forward to further tests. For example, we are also using K10 for follow-up work after human exploration. In that case, our analogue study site is in a bit farther afield: the high Arctic of Canada. Perhaps we'll also deploy K10 for this purpose next year at the Desert RATS tests."

New wheels for a new generation of exploration

LER, the next-generation rover, is an all-electric vehicle with 12 wheels. A little bigger than a Humvee, the LER was built for extreme exploration. The frame of this mobile base camp was developed in conjunction with an off-road race truck team, making it able to travel hundreds of kilometers over rugged terrain. Its wheels can move sideways in a "crabbing" motion, one of many features that make it skilled at scrambling over rocks. During the mission, LER was able to climb slopes on the lava flow that the team's SUV chase vehicles couldn't handle. Remarkably, the advanced suspension and drivetrain of the LER allows it to perform such feats using only 20 horsepower, an order of magnitude less than the standard off-road vehicles it left in the dust.

If that isn't enough to make the Apollo-era astronauts envious, LER is also capable of housing two astronauts for up to two weeks with sleeping and sanitary facilities. It is equipped with a time- and space-saving concept called suit ports, designed to allow astronauts to quickly enter and exit their EVA suits via a rear-entry hatch.

"Unlike during the Apollo Program where the astronauts had to drive their lunar rover wearing space suits," says Rice, "this new manned lunar rover concept with its pressurized environment will allow the crew to drive wearing more comfortable clothing and not be stuck in a space suit."

NASA has not yet confirmed the technologies that will be used in future lunar missions, but with the successful testing of analogue systems and procedures in simulated environments here on earth, we move one step closer to a sustainable human presence on the moon.

The Desert RATS tests have been held for more than a decade, as engineers from NASA centers work with representatives from industry and academia to determine what will be needed for human exploration of the moon and other destinations in the solar system. It is the culmination of the various individual science and advanced engineering discipline areas' year-long efforts. This year's work built on the investigations of previous years and increased the scope and length of the tests.

 

On Sept. 16, Kip Hodges appeared on Eight, Arizona PBS Horizon to discuss Desert RATS and the future of human space flight. Watch the interview http://www.azpbs.org/video/vidlink.php?vidId=1341" title="Desert RATS interview on Horizon" target="_blank">here.

Nikki Cassis

marketing and communications director, School of Earth and Space Exploration

Sparky sees the world


September 16, 2009

We all know that Sparky goes to a lot of football games, but did you realize he’s a world traveler, too?

The ever-smiling mascot has been seen – and photographed – in Austria, India, Italy, Spain, United Arab Emirates, Portugal, Canada, Norway, Fiji, Australia, Mexico, Panama, Belize, Guatemala, Honduras, Nicaragua, El Salvador and Costa Rica. Download Full Image

And that was just this past summer.

Sparky did have a little help in making his journey, which included stops in 10 U.S. states. Actually, there were 10 Sparkys on the road this past summer, escorted by 10 faculty, staff and students from the School of Community Resources and Development in the College of Public Programs.

“Sparky Abroad” was the idea of Lynne Kincaid, executive assistant for the School of Community Resources, and Scott Smas, business manager.

“Lynne and I wanted to do a unique community-building event that would coincide with our school mission of ‘enhancing cultural, environmental, and economic well-being of communities through instruction, discovery and service,’” Smas says.

“We thought this would be a good way to show how diverse our school is. We knew who would be traveling, and we asked them to take Sparky along and photograph him at each location.”

At first, only the travelers knew about the scheme. They e-mailed their photos to Kincaid and Smas, who took turns posting them in the school reception area before the workday started.

“The faculty and staff began to wonder who was putting the photos up and how they got Sparky in them,” Smas says. Soon, the secret was out, and everyone began to anticipate the uniquely ASU travelogue.

“At the start of this semester, we unveiled a large world map with a photo from each traveler and each location Sparky went,” Smas says. “All the photos are in a book that people can look through in the reception area.”

In his busy summer, Sparky went with students in the study abroad classes, helped present papers at international conferences, and was engaged in research across the United States and overseas.

He will get no rest this academic year. Though he won’t be taking classes, he’ll be on the road again, helping spread the word about ASU and the School of Community Resources.