Category: NASA

Unmanned prototype sailplane. Image credit: NASA. Click to enlarge.
With the graceful flight of hawks and eagles in mind, NASA aerospace engineer Michael Allen recently hand-launched a 15-pound motorized model sailplane over the Southern California desert. He was hoping it would catch plumes of rising air called thermals.

The sailplane did just that several times without human intervention during a series of research flights at NASA’s Dryden Flight Research Center, Calif. The tests validated Allen’s premise that using thermal lift could significantly extend the range and flight endurance of small unmanned air vehicles. Thermal lift increases vehicle endurance and saves fuel. This is significant, as small vehicle flight duration is often restricted by limited fuel capacity.

Allen and his team of engineers and technicians flew the remote-controlled RnR Products sailplane 17 times from July through mid-September. The sailplane was modified by Dryden aerospace technicians to incorporate a small electric motor and an autopilot programmed to detect thermals.

The 14-foot-wingspan model flew to an altitude of about 1,000 feet. The ground-based remote control pilot then handed off control to the sailplane’s onboard autopilot. The autopilot software flew the plane on a pre-determined course over the northern portion of Rogers Dry Lake at Edwards Air Force Base, Calif., until it detected an updraft. As the aircraft rose with the updraft, the engine automatically shut off. The aircraft circled to stay within the lift from the updraft.

Allen said the small sailplane added 60 minutes to its endurance by autonomous thermal soaring. The modified sailplane gained an average altitude in 23 updrafts of 565 feet, and in one strong thermal ascended 2,770 feet.

“The flights demonstrated a small unmanned vehicle can mimic birds and exploit the free energy that exists in the atmosphere,” Allen said. “We have been able to gather useful and unique data on updrafts and the response of the aircraft in updrafts. This will further the technology and refine the algorithms used.”

Small, portable, unpiloted, long-endurance vehicles could fulfill a number of observation roles including forest fire monitoring, traffic control, search and rescue.

For more information about flight research at Dryden on the Web visit:
http://www.nasa.gov/centers/dryden

For information about NASA and agency programs on the Web, visit:
http://www.nasa.gov/home

Original Source: NASA News Release

Astronauts could return to the Moon as early as 2018. Image credit: NASA/JPL. Click to enlarge.
Before the end of the next decade, NASA astronauts will again explore the surface of the moon. And this time, we’re going to stay, building outposts and paving the way for eventual journeys to Mars and beyond. There are echoes of the iconic images of the past, but it won’t be your grandfather’s moon shot.

This journey begins soon, with development of a new spaceship. Building on the best of Apollo and shuttle technology, NASA’s creating a 21st century exploration system that will be affordable, reliable, versatile, and safe.

The centerpiece of this system is a new spacecraft designed to carry four astronauts to and from the moon, support up to six crewmembers on future missions to Mars, and deliver crew and supplies to the International Space Station.

The new crew vehicle will be shaped like an Apollo capsule, but it will be three times larger, allowing four astronauts to travel to the moon at a time.

The new spacecraft has solar panels to provide power, and both the capsule and the lunar lander use liquid methane in their engines. Why methane? NASA is thinking ahead, planning for a day when future astronauts can convert Martian atmospheric resources into methane fuel.

The new ship can be reused up to 10 times. After the craft parachutes to dry land (with a splashdown as a backup option), NASA can easily recover it, replace the heat shield and launch it again.

Coupled with the new lunar lander, the system sends twice as many astronauts to the surface as Apollo, and they can stay longer, with the initial missions lasting four to seven days. And while Apollo was limited to landings along the moon’s equator, the new ship carries enough propellant to land anywhere on the moon’s surface.

Once a lunar outpost is established, crews could remain on the lunar surface for up to six months. The spacecraft can also operate without a crew in lunar orbit, eliminating the need for one astronaut to stay behind while others explore the surface.

Safe and reliable
The launch system that will get the crew off the ground builds on powerful, reliable shuttle propulsion elements. Astronauts will launch on a rocket made up of a single shuttle solid rocket booster, with a second stage powered by a shuttle main engine.

A second, heavy-lift system uses a pair of longer solid rocket boosters and five shuttle main engines to put up to 125 metric tons in orbit — about one and a half times the weight of a shuttle orbiter. This versatile system will be used to carry cargo and to put the components needed to go to the moon and Mars into orbit. The heavy-lift rocket can be modified to carry crew as well.

Best of all, these launch systems are 10 times safer than the shuttle because of an escape rocket on top of the capsule that can quickly blast the crew away if launch problems develop. There’s also little chance of damage from launch vehicle debris, since the capsule sits on top of the rocket.

The Flight Plan
In just five years, the new ship will begin to ferry crew and supplies to the International Space Station. Plans call for as many as six trips to the outpost a year. In the meantime, robotic missions will lay the groundwork for lunar exploration. In 2018, humans will return to the moon. Here’s how a mission would unfold:

A heavy-lift rocket blasts off, carrying a lunar lander and a “departure stage” needed to leave Earth’s orbit. The crew launches separately, then docks their capsule with the lander and departure stage and heads for the moon.

Three days later, the crew goes into lunar orbit. The four astronauts climb into the lander, leaving the capsule to wait for them in orbit. After landing and exploring the surface for seven days, the crew blasts off in a portion of the lander, docks with the capsule and travels back to Earth. After a de-orbit burn, the service module is jettisoned, exposing the heat shield for the first time in the mission. The parachutes deploy, the heat shield is dropped and the capsule sets down on dry land.

Into the Cosmos
With a minimum of two lunar missions per year, momentum will build quickly toward a permanent outpost. Crews will stay longer and learn to exploit the moon’s resources, while landers make one way trips to deliver cargo. Eventually, the new system could rotate crews to and from a lunar outpost every six months.

Planners are already looking at the lunar south pole as a candidate for an outpost because of concentrations of hydrogen thought to be in the form of water ice, and an abundance of sunlight to provide power.

These plans give NASA a huge head start in getting to Mars. We will already have the heavy-lift system needed to get there, as well as a versatile crew capsule and propulsion systems that can make use of Martian resources. A lunar outpost just three days away from Earth will give us needed practice of “living off the land” away from our home planet, before making the longer trek to Mars.

Original Source: NASA News Release

An astronaut’s pair of gloves. Image credit: NASA. Click to enlarge
NASA, in collaboration with the Volanz Aerospace Inc./Spaceflight America (Volanz), today announced a new Centennial Challenges prize competition.

The Astronaut Glove Challenge award will go to the team that can design and manufacture the best performing glove within competition parameters. The $250,000 purse will be awarded at a competition scheduled for November 2006, when competing teams test their glove designs against each other.

For the Challenge, teams must develop the bladder-restraint portion of an astronaut glove that is strong, easy on the hands, and gives the operator a high degree of dexterity.

“Reducing space suit glove fatigue is a critical technological goal that, if successful, would have an important impact on astronaut performance and mission planning,” said NASA’s acting Associate Administrator for the Exploration Systems Mission Directorate, Douglas Cooke.

Each team will provide two gloves for three key tests. First, the forces required to move the fingers and thumb on each glove will be measured. Gloves requiring the least force will be awarded more points. Second, each team will perform standardized dexterity tasks in a depressurized glove box. Teams completing the most tasks within a specified time will win the most points. Third, one glove from each team will be subjected to a burst test. Glove designs that withstand greater internal pressures will be awarded more points.

The team with the glove design that wins the most points, while exceeding the performance of existing astronaut glove technologies will win the contest.

NASA’s Centennial Challenges promotes technical innovation through a novel program of prize competitions. It is designed to tap the nation’s ingenuity to make revolutionary advances to support the Vision for Space Exploration and NASA goals.

“With this competition, we are continuing to develop Centennial Challenges’ base of smaller, targeted technology prizes and laying the ground work for our larger competitions,” said NASA’s Centennial Challenges program manager Brant Sponberg.

The Astronaut Glove Challenge will be administered and executed by Volanz at no cost to NASA. Volanz will officially kick-off the challenge at a conference in November in Houston.

“New technologies and innovations will have to be developed quickly to improve the wearability and dexterity of astronaut gloves. This challenge will help NASA meet this key requirement in support of the Vision for Space Exploration,” said Volanz chairman and chief executive officer, Alan Hayes. “Like other Centennial Challenges’ competitions, the Astronaut Glove Challenge will encourage innovation that will greatly enhance our capabilities in this area,” he added.

The Centennial Challenges program is managed by NASA’s Exploration Systems Mission Directorate. Volanz is a non-profit Maryland corporation formed in 1998 to provide space science educational and research programs for researchers, educators, and students.

For more information about Centennial Challenges on the Internet, visit:
http://centennialchallenges.nasa.gov

For more information about NASA and agency programs on the Internet, visit:
http://www.nasa.gov/home/index.html

For information about Volanz Aerospace Inc. on the Internet, visit:
www.spaceflightamerica.org

Original Source: NASA News Release

Michael Griffin is returning to NASA as the Agency’s 11th Administrator.

He reported to work at NASA Headquarters in Washington on Thursday, April 14, the same day the Expedition 11 crew launched to the International Space Station.

“I have great confidence in the team that will carry out our nation’s exciting, outward-focused, destination-oriented program,” said Griffin. “I share with the agency a great sense of privilege that we have been given the wonderful opportunity to extend humanity’s reach throughout the solar system.”

Administrator Griffin, who served as NASA’s Chief Engineer earlier in his career, takes the helm of the Agency as it’s charting a new course. The Space Shuttle fleet is poised to Return to Flight, the first step in fulfilling the Vision for Space Exploration — a bold plan to return humans to the Moon, journey to Mars and beyond.

In his first address to NASA employees, Griffin said he would focus immediately on Return to Flight efforts, and noted that the Agency has much on its plate right now. “It’s going to be difficult, it’s going to be hectic, but we will do it together,” he said.

He also told employees that he saw “nothing but cheers” in the public reaction to the Vision. “People want a space program that goes somewhere and does something,” he said.

Griffin was nominated by President George W. Bush on March 14, 2005, and confirmed by the United States Senate on April 13, 2005. At his confirmation hearing on April 12, he made clear that the “strategic vision for the U.S. manned space program is of exploration beyond low Earth orbit.”

In his statement to the committee, Griffin said, “It is a daring move at any time for a national leader to call for the bold exploration of unknown worlds, a major effort at the very limit of the technical state of the art,” adding later, “in the twenty-first century and beyond, for America to continue to be preeminent among nations, it is necessary for us also to be the preeminent spacefaring nation.”

A holder of five master’s degrees and a Ph.D., Griffin also made clear that, despite limited resources, “NASA can do more than one thing at a time.”

“My conclusion is that we as a nation can clearly afford well-executed, vigorous programs in both robotic and human space exploration as well as in aeronautics. We know this. We did it,” he said, referring back to the Agency’s accomplishments during the Apollo era.

He closed his statement with a call for exploration: “I believe that, if money is to be spent on space, there is little doubt that the huge majority of Americans would prefer to spend it on an exciting, outward-focused, destination-oriented program. And that is what the President’s Vision for Space Exploration is about.”

Prior to his appointment, Griffin was serving as Space Department Head at Johns Hopkins University Applied Physics Laboratory. Prior to that, he was President and Chief Operating Officer of In-Q-Tel, Inc. He also served in several positions within Orbital Sciences Corporation, including Chief Executive Officer of Magellan Systems, Inc.

Earlier in his career, Griffin served as chief engineer and associate administrator for exploration at NASA Headquarters and also worked at NASA’s Jet Propulsion Laboratory. He also served as Deputy for Technology at the Strategic Defense Initiative Organization.

Griffin received a bachelor’s degree in Physics from Johns Hopkins University; a master’s degree in Aerospace Science from Catholic University of America; a Ph.D. in Aerospace Engineering from the University of Maryland; a master’s degree in Electrical Engineering from the University of Southern California; a master’s degree in Applied Physics from Johns Hopkins University; a master’s degree in Business Administration from Loyola College; and a master’s degree in Civil Engineering from George Washington University.

Original Source: NASA News Release

The US White House has announced the Dr. Mike Griffin will pick up the reins at NASA, filling the vacancy left by Sean O’Keefe. Griffin is currently the director of space at Johns Hopkins University’s Applied Physics Laboratory (APL), and is a supporter of the new Vision for Space Exploration. Once confirmed by the senate, Griffin will become the 11th Administrator for NASA.

The US White House released its 2006 budget today, which included $16.45 billion US for NASA. This is a 2.5% increase over the previous year, but it doesn’t include any funds to save the Hubble Space Telescope. Only $75 million have been set aside for Hubble, which would only be enough to have a robot steer the aging observatory into a safe trajectory when it needs to be destroyed. The budget sets aside $9.6 billion for science, aeronautics and exploration, and $6.7 billion for the space shuttle and International Space Station.

NASA Administrator Sean O’Keefe is set to resign this week from the agency, after heading it up for three years. President Bush is considering five men to take over, with the former leader of the Pentagon Missile Defense Agency, Air Force Lt. Gen. Ronald Kadish, widely considered to be the top candidate. Other people being considered for the position are former Congressman Robert Walker and former shuttle astronauts Ron Sega, Charles Bolden and Robert Crippen. O’Keefe is said to be considering a new position as the chancellor of Louisiana State University.

The X-43A research mission intended to reach Mach 10 today was postponed, and may be rescheduled for the same time tomorrow.

An instrumentation system problem with the X-43 caused a delay until it was fixed. When the preflight checklist was resumed, not enough time remained to meet an FAA launch deadline of 4 p.m. PST.

The X-43A team is meeting to assess the ability to launch the flight tomorrow.

If the mission can be flown on Tuesday, Nov. 16, the launch window would remain from 2 to 4 p.m. Pacific time, with takeoff of the B-52B mothership that carries the X-43A / Pegasus booster to launch altitude slated for 1 p.m.

The mission is intended to flight-validate the operation of the X-43A’s supersonic-combustion ramjet – or scramjet – engine at a record airspeed of almost 10 times the speed of sound, or about 7,000 mph.

The flight is part of the Hyper-X program, a research effort designed to demonstrate air-breathing propulsion technologies for access to space and high-speed flight within the atmosphere. It will provide unique in-flight data on hypersonic air-breathing engine technologies that have large potential pay-offs.

Original Source: NASA News Release

NASA unveils its newest supercomputer today during a ribbon-cutting ceremony at the agency’s Ames Research Center, Moffett Field, Calif. The “Columbia” is one of the world’s most powerful supercomputing systems. Columbia was named to honor the crew of the Space Shuttle Columbia lost Feb. 1, 2003.

“This amazing new supercomputer system dramatically increases NASA’s capabilities and revolutionizes our capacity for conducting scientific research and engineering design,” said NASA Ames Research Center Director G. Scott Hubbard. “It will be one of the fastest, largest and most productive supercomputers in the world, providing an estimated 10-fold increase in NASA’s supercomputing capacity. It is already having a major impact on NASA’s science, aeronautics and exploration programs, in addition to playing a critical role in preparing the Space Shuttle for return to safe flight next year,” Hubbard said.

Comprised of an integrated cluster of 20 interconnected SGI? Altix? 512-processor systems, for a total of 10,240 Intel? Itanium? 2 processors, Columbia was built and installed at the NASA Advanced Supercomputing facility at Ames in less than 120 days.

“The Columbia system is a tremendous development for NASA and the nation. Simulation of the evolution of the Earth and planetary ecosystems with high fidelity has been beyond the reach of Earth scientists for decades,” NASA’s Deputy Associate Administrator, Science Mission Directorate Ghassem Asrar said. “With Columbia, scientists are already seeing dramatic improvements in the fidelity of simulations in such areas as hurricane track prediction, global ocean circulation, prediction of large scale structures in the universe, and the physics of supernova detonations,” he said.

Columbia provides an integrated computing, visualization and data storage environment to help NASA meet its mission goals and the Vision for Space Exploration. The new system builds upon the highly successful collaboration between NASA, Silicon Graphics, Inc. (SGI) and Intel Corporation that developed the world’s first 512-processor Linux server. The server, the SGI? Altix? located at Ames was named “Kalpana,” after Columbia astronaut and Ames’ alumna Kalpana Chawla.

“With SGI and Intel, we set out to revitalize NASA’s computing capabilities, and the Columbia system has done so in a spectacular way,” said Walt Brooks, chief of NASA’s Advanced Supercomputing Division. “Not only were scientists doing real Earth and space analysis during the system build, but within days of the full installation, we achieved a Linpack benchmark rating of 42.7 teraflops on 16 nodes with an 88 percent efficiency rating, exceeding the current best reported number by a significant margin,” he said.

“With the completion of the Columbia system, NASA, SGI and Intel have created a powerful national resource, one that will serve scientists who strive to unlock the mysteries of this planet and the universe in which it dwells,” said SGI CEO Bob Bishop. “NASA should be commended for the remarkable boldness that made the new Columbia computer happen. Our long-standing partnership with the agency has triggered a new age in scientific discovery, and based on NASA’s initial success, it seems likely that we’ll be discussing new scientific breakthroughs in the very near future,” he said.
“The launching of the Columbia system shows what’s possible when government and technology leaders work together toward a goal of truly national importance,” said Paul Otellini, president and COO of Intel Corporation. “While this Itanium 2 processor-based system will be one of the highest performing computers ever created in the world, the real value is how this system will accelerate scientific design and research faster than before for years to come.”
The almost instant productivity of the Columbia supercomputer architecture and technology has made the system available to a broad spectrum of NASA-sponsored scientists. Feedback from scientists is extremely positive. Columbia already is enabling scientists to conduct research and analyze complex data much faster in a variety of scientific disciplines. The research and analysis ranges from providing more accurate hurricane predictions, to climate change, galaxy formation, black holes and supernovas.

Thanks to the powerful Columbia supercomputer, NASA scientists have developed an improved global circulation model. Initial results from this new model accurately predict when a hurricane is expected to hit land five days in advance, three days sooner than current methods, thereby helping reduce the potential impact on life and property.

Original Source: NASA News Release