Friday, January 23, 2009

Pieces Coming Together for First Test Launch of NASA's New Spacecraft

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NASA is using powerful computers and software programs to design the rocket that will carry crew and cargo to space after the space shuttle retires. But those computers will have their work checked the old-fashioned way with the first of several uncrewed demonstration launches beginning in 2009.

Ares I-X, the first Ares I test rocket, will lift off from Kennedy Space Center, Fla. in the summer of 2009. It will climb about 25 miles (40.2 km) in a two-minute powered test of Ares I first stage performance and its first stage separation and parachute recovery system.

A less obvious -- but no less critical -- test will be of overall vehicle aerodynamics. Is the design safe and stable in flight? This is a question that must be answered before astronauts begin traveling into orbit and beyond.

With that question answered, the flight of Ares I-X will be an important step toward verifying analysis tools and techniques needed to further develop Ares I, NASA's next launch vehicle.

In order to ensure that the rocket's flight characteristics are fully understood, extreme care is being taken to precisely fabricate the rocket's simulated upper stage and the simulated Orion crew module and associated launch abort tower. These full-scale hardware components must accurately reflect the shape and physical properties of the models used in computer analyses and wind tunnel tests in order to confidently compare flight results with preflight predictions.

At NASA's Langley Research Center, Hampton, Va., where the Orion crew module and tower-like launch abort system simulators are taking shape, researchers and managers are working to overcome multiple challenges.

"We are a highly matrixed team -- a lot of people from various organizations -- that must work together successfully on a tight schedule," explained Kevin Brown, project manager for the Ares I-X Crew Module/Launch Abort System (CM/LAS) project.

"We have a team doing fabrication and assembly work in conjunction with an off-site contractor, and we have another team readying to install about 150 sensors once the crew module and launch abort tower are completed," he added.
The simulated crew module, faithful to the vehicle that will ferry astronauts to the International Space Station by 2015, to the moon in the 2020 timeframe and ultimately to points beyond, will measure approximately five meters (16.4 ft) in diameter. While the conical module will have the same basic shape as the Apollo Command Module, it will be significantly larger. The simulated launch abort system, positioned above the crew module at launch, will add another 46 feet (14 m) in length to the combined simulator.

The sensors will measure aerodynamic pressure and temperature at the nose of the rocket, and contribute to measurements of vehicle acceleration and angle of attack. How the tip of the rocket slices through the atmosphere is important because that determines the flow of air over the entire vehicle.

"This launch will tell us what we got right and what we got wrong in the design and analysis phase," said Jonathan Cruz, deputy project manager for Ares I-X CM/LAS. "We have a lot of confidence, but we need those two minutes of flight data before NASA can continue to the next phase of rocket development," he said.

The completed two-part flight test article is to be delivered to Kennedy in early 2009. Before launch, the combined crew module and launch abort system tower will be used to help demonstrate lifting, handling and stacking of Ares I-X flight test vehicle elements.

Ares I-X will provide important data for developing Ares I in time to support the vehicle's critical design review in 2010.

For more information

Wednesday, January 21, 2009

NASA Radar Provides First Look Inside Moon's Shadowed Craters

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WASHINGTON - Using a NASA radar flying aboard India's Chandrayaan-1 spacecraft, scientists are getting their first look inside the moon's coldest, darkest craters.

The Mini-SAR instrument, a lightweight, synthetic aperture radar, has passed its initial in-flight tests and sent back its first data. The images show the floors of permanently-shadowed polar craters on the moon that aren't visible from Earth. Scientists are using the instrument to map and search the insides of the craters for water ice.

"The only way to explore such areas is to use an orbital imaging radar such as Mini-SAR," said Benjamin Bussey, deputy principal investigator for Mini-SAR, from the Johns Hopkins University Applied Physics Laboratory in Laurel, Md. "This is an exciting first step for the team which has worked diligently for more than three years to get to this point."

The images, taken on Nov. 17, 2008, cover part of the Haworth crater at the moon's south pole and the western rim of Seares crater, an impact feature near the north pole. Bright areas in each image represent either surface roughness or slopes pointing toward the spacecraft. Further data collection by Mini-SAR and analysis will help scientists to determine if buried ice deposits exist in the permanently shadowed craters near the moon's poles.

"During the next few months we expect to have a fully calibrated and operational instrument collecting valuable science data at the moon," said Jason Crusan, program executive for the Mini-RF Program for NASA's Space Operations Mission Directorate in Washington.

Mini-SAR is one of 11 instruments on the Indian Space Research Organization's Chandrayaan-1 and one of two NASA-sponsored contributions to its international payload. The other is the Moon Mineralogy Mapper, a state-of-the-art imaging spectrometer that will provide the first map of the entire lunar surface at high spatial and spectral resolution. Data from the two NASA instruments will contribute to the agency's increased understanding of the lunar environment as it implements America's space exploration plan, which calls for robotic and human missions to the moon.

Chandrayaan-1 launched from India's Satish Dhawan Space Center on Oct. 21 and began orbiting the moon Nov. 8. The Applied Physics Laboratory performed the final integration and testing on Mini-SAR. It was developed and built by the Naval Air Warfare Center and several other commercial and government contributors. The Applied Physics Laboratory's Satellite Communications Facility is Chandrayaan-1's primary ground station in the Western Hemisphere.

For more information about the Moon Mineralogy Mapper, visit:


For more information about Chandrayaan-1, visit:

56th Inauguration Features NASA Astronauts, Lunar Rover, Panoramic Photos and Live Twitter

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WASHINGTON - NASA astronauts who recently returned from a trip to the International Space Station will join representatives from across the country and the nation's armed forces in the 56th Inaugural Parade.

The NASA contingent will include a next-generation lunar rover that astronauts will use for future exploration of the moon. The parade will travel down Pennsylvania Avenue in Washington on Jan. 20 following swearing-in ceremonies for President-elect Barack Obama and Vice President-elect Joseph Biden. Many of the participating astronauts -- Commander Chris Ferguson, Pilot Eric Boe, mission specialists Donald Pettit, Steve Bowen, Heidemarie Stefanyshyn-Piper, Shane Kimbrough and Greg Chamitoff -- flew on space shuttle Endeavour in November 2008 on the STS-126 mission.

Astronaut Mike Gernhardt will drive the rover. Astronaut Rex Walheim, wearing a spacesuit, will ride with him. The Lunar Electric Rover is a concept vehicle about the size of a pickup truck that NASA is evaluating for use when humans return to the moon. The rover can house two astronauts for as long as 14 days. The vehicle has many unique features, including the ability to move its six pairs of wheels in any combination of forward and sideways motions, enabling it to scramble over rough terrain.

NASA will record video during the parade from a camera mounted on the lunar rover. A member of the lunar rover team will provide live updates to the NASA News Twitter feed throughout the event.

NASA photographers and videographers will document the agency's participation in the inaugural activities. Images will be posted online at the agency's Web site when they become available.

For photos and more information about NASA and inaugural activities, visit:



NASA Television will air a video file of the parade footage and the video recorded on the rover as soon as possible following the parade's conclusion. For NASA TV downlink information, schedules and links to streaming video, visit:


To access the NASA News Twitter feed and other agency Twitter feeds, visit:


For more information about NASA's Lunar Electric Rover, visit:


For information about STS-126 and the next space shuttle mission in February, visit:

Thursday, January 8, 2009

NASA Solicits Ideas for Displaying Retired Space Shuttles and Main Engines

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WASHINGTON -- NASA has issued a Request for Information, or RFI, seeking ideas from educational institutions, science museums and other appropriate organizations about the community's ability to acquire and publicly display the space shuttle orbiters and space shuttle main engines after the conclusion of the Space Shuttle Program.

Sponsored by NASA's Office of Infrastructure, the RFI seeks input from appropriate officials and decision-makers from museums, science centers, institutions and other organizations dedicated to education or educational outreach with experience in public display of space hardware and nationally-recognized historical artifacts. NASA will use information gained from this RFI to develop strategies for eventual placement of two space shuttle orbiters and a minimum of six unassembled space shuttle main engine display "kits."

NASA's primary goal of this effort is to collect a wide variety of perspectives about whether eligible recipient organizations are capable of appropriately displaying the shuttle orbiters and main engines, and bearing the full cost of preparing the hardware for display and transportation to its final destination. The RFI also seeks ideas about how the shuttle orbiters and shuttle main engines can best be used in the broad national interest to inspire the American public and students in particular. Organizations interested in responding to the RFI must provide their input to NASA by March 17, 2009.

For additional information and to view the RFI, visit:

http://www.nasa.gov/transition

For additional information about the shuttle program, visit:

http://www.nasa.gov/shuttle

Wednesday, December 31, 2008

Mars Rovers Near Five Years of Science and Discovery

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PASADENA, Calif. -- NASA rovers Spirit and Opportunity may still have big achievements ahead as they approach the fifth anniversaries of their memorable landings on Mars.

Of the hundreds of engineers and scientists who cheered at NASA's Jet Propulsion Laboratory in Pasadena, Calif., on Jan. 3, 2004, when Spirit landed safely, and 21 days later when Opportunity followed suit, none predicted the team would still be operating both rovers in 2009.

"The American taxpayer was told three months for each rover was the prime mission plan," said Ed Weiler, associate administrator for NASA's Science Mission Directorate at NASA Headquarters in Washington. "The twins have worked almost 20 times that long. That's an extraordinary return of investment in these challenging budgetary times."

The rovers have made important discoveries about wet and violent environments on ancient Mars. They also have returned a quarter-million images, driven more than 21 kilometers (13 miles), climbed a mountain, descended into craters, struggled with sand traps and aging hardware, survived dust storms, and relayed more than 36 gigabytes of data via NASA's Mars Odyssey orbiter. To date, the rovers remain operational for new campaigns the team has planned for them.

"These rovers are incredibly resilient considering the extreme environment the hardware experiences every day," said John Callas, JPL project manager for Spirit and Opportunity. "We realize that a major rover component on either vehicle could fail at any time and end a mission with no advance notice, but on the other hand, we could accomplish the equivalent duration of four more prime missions on each rover in the year ahead."

Occasional cleaning of dust from the rovers' solar panels by Martian wind has provided unanticipated aid to the vehicles' longevity. However, it is unreliable aid. Spirit has not had a good cleaning for more than 18 months. Dust-coated solar panels barely provided enough power for Spirit to survive its third southern-hemisphere winter, which ended in December.

"This last winter was a squeaker for Spirit," Callas said. "We just made it through."

With Spirit's energy rising for spring and summer, the team plans to drive the rover to a pair of destinations about 183 meters (200 yards) south of the site where Spirit spent most of 2008. One is a mound that might yield support for an interpretation that a plateau Spirit has studied since 2006, called Home Plate, is a remnant of a once more-extensive sheet of explosive volcanic material. The other destination is a house-size pit called Goddard.

"Goddard doesn't look like an impact crater," said Steve Squyres of Cornell University, in Ithaca, N.Y. Squyres is principal investigator for the rover science instruments. "We suspect it might be a volcanic explosion crater, and that's something we haven't seen before."

A light-toned ring around the inside of the pit might add information about a nearby patch of bright, silica-rich soil that Squyres counts as Spirit's most important discovery so far. Spirit churned up the silica in mid-2007 with an immobile wheel that the rover has dragged like an anchor since it quit working in 2006. The silica was likely produced in an environment of hot springs or steam vents.

For Opportunity, the next major destination is Endeavour Crater. It is approximately 22 kilometers (14 miles) in diameter, more than 20 times larger than another impact crater, Victoria, where Opportunity spent most of the past two years. Although Endeavour is about 12 kilometers (7 miles) from Victoria, it is considerably farther as the rover drives on a route evading major obstacles.

Since climbing out of Victoria four months ago, Opportunity has driven more than a mile of its route toward Endeavour and stopped to inspect the first of several loose rocks the team plans to examine along the way. High-resolution images from NASA's Mars Reconnaissance Orbiter, which reached Mars in 2006, are helping the team plot routes around potential sand traps that were not previously discernable from orbit.

"We keep setting the bar higher for what these rovers can do," said Frank Hartman, a JPL rover driver. "Once it seemed like a crazy idea to go to Endeavour, but now we're doing it."

Squyres said, "The journeys have been motivated by science, but have led to something else important. This has turned into humanity's first overland expedition on another planet. When people look back on this period of Mars exploration decades from now, Spirit and Opportunity may be considered most significant not for the science they accomplished, but for the first time we truly went exploring across the surface of Mars."

JPL, a division of the California Institute of Technology, Pasadena, manages the Mars Exploration Rovers for the NASA Science Mission Directorate, Washington. For more information about Spirit and Opportunity, visit: http://www.nasa.gov/rovers .

Sunday, December 28, 2008

NASA Tests Lunar Robots and Spacesuits on Earthen Moonscape

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Conditions on the moon will be harsher, but prototype NASA robotic vehicles and their developers braved sand storms and unprecedented temperature swings on sweeping dunes near Moses Lake, Wash., this month to prepare for the future.

Teams from seven NASA centers and one university coordinated their activities on the Moses Lake Sand Dunes from June 2-13 to gain hands-on experience with specific technical challenges anticipated when humans return to the moon by 2020 and begin to explore the lunar surface and set up initial outposts. "The goal was to gain hands-on experience with specific technical challenges anticipated when humans return to the moon by 2020, begin to explore the lunar surface, and set up outposts," said Test Director Bill Bluethmann of NASA's Johnson Space Center in Houston.

For more information visit
http://www.nasa.gov/

Tuesday, December 23, 2008

NASA Response to Aviation Week and Space Technology Article

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WASHINGTON - NASA recently submitted the following response to Aviation Week:

Unfortunately, Aviation Week's recent article of Dec. 21, 2008, entitled “Bush Administration Nixed NASA's U.S.-China Cooperation Idea," is inaccurate and misleading.

As an initial matter, NASA has never asked the White House for a cooperative mission such as the one described in the article. The fact is that the White House has been very supportive of a deliberate and careful establishment of relations between NASA and the China National Space Administration (CNSA) over the past two years. As a result, NASA commenced working group discussions with CNSA representatives on Earth and space science earlier this year. The discussions of potential areas of future cooperation were based on the principles of mutual benefit, reciprocity, and transparency, with the understanding that any proposal for specific projects would undergo careful review within the United States Government. Approval would, of course, be affected by the overall status of the U.S.-China government-to-government relationship. The Alpha Magnetic Spectrometer (AMS), space shuttle flights, and International Space Station were never intended by either NASA or CNSA to be considered by the NASA-CNSA working group.

Regarding AMS, it is not an international project managed by NASA; the international aspects of AMS are managed by the Department of Energy (DOE). Currently, NASA is prepared to take necessary steps to fly one additional space shuttle flight to deliver AMS to the International Space Station before the scheduled retirement of the shuttle in 2010, provided that additional funding is provided to the agency for this additional flight. However, we anticipate this flight will be reviewed by the new administration.

For More Information visit

http://www.nasa.gov/news/index.html

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