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Taurus XL ready to launch Glory spacecraft

Date:
February 10, 2011
Source:
NASA
Summary:
The Glory spacecraft and its Taurus XL launch vehicle are coming together at Vandenberg Air Force Base in California as NASA gets ready to launch its first Launch Services Program mission of 2011. Researchers are looking for more puzzle pieces to fill out the picture of Earth's climate and Glory was designed to give them the pieces relating to the role tiny particles known as aerosols play in the planet's weather. The spacecraft, about the size of a refrigerator, is also equipped with an instrument to measure the sun's impact on Earth's conditions. Glory is to lift off Feb. 23 at 5:09 a.m. EST.

The Glory spacecraft stands in its processing hangar before it was encapsulated and sent to the launch pad.
Credit: NASA/Don Kososka, VAFB

The Glory spacecraft and its Taurus XL launch vehicle are coming together at Vandenberg Air Force Base in California as NASA gets ready to launch its first Launch Services Program mission of 2011.

Researchers are looking for more puzzle pieces to fill out the picture of Earth's climate and Glory was designed to give them the pieces relating to the role tiny particles known as aerosols play in the planet's weather. The spacecraft, about the size of a refrigerator, is also equipped with an instrument to measure the sun's impact on Earth's conditions. Glory is to lift off Feb. 23 at 5:09 a.m. EST.

"The Glory satellite will help us understand the interaction of what's called aerosols in our environment," said Chuong Nguyen, LSP's mission integration manager for Glory.

The particles Glory will measure are small enough to float in the atmosphere and affect weather conditions by either absorbing sunlight or reflecting it. The particles can also affect rain patterns by seeding clouds and have other effects. The Glory mission is to also find out how long-lasting the effects for aerosols and how far their effects reach.

The effects of some aerosols are limited to those parts of the world that generate them. For example, cities in developing nations often produce the most "black carbon," or soot, and it is in those areas that the effects are seen most dramatically, sometimes even in the form of health problems.

However, other aerosols including dust from the Sahara desert, reach high enough into the air that they are transported across the oceans. In the case of the Sahara, its dust has been seen in the Caribbean.

While the spacecraft will get due attention, many eyes also will be on the Taurus XL rocket that will lift Glory. The four-stage, solid-fueled rocket was last used in February 2009 to launch the Orbiting Carbon Observatory. However, the payload fairing protecting the spacecraft during the early part of launch did not separate and the spacecraft never reached orbit.

"Glory is going to do some fantastic stuff as far as mapping out aerosols in the atmosphere, but it's also a groundbreaker in that this is the first flight after a failure of the Taurus XL vehicle," said Omar Baez, launch director for the Glory mission. "So we're excited to be doing this and Glory just happens to be the science that we're taking up with us this time."

Compared with other rockets that have launched many hundreds of times, the Taurus XL is quite young and Baez said the trouble with the last launch is part of any new system's growing pains.

"We've had a lot of work put into this vehicle so essentially you're flying some systems that you're well aware of," Baez said. "They're brand new but you know them intimately. We'll take out those problems that we had with the failure."

Two review boards were established to find the cause of the failure, one by NASA and one by the rocket's maker, Orbital Sciences. When those were complete, the launch team moved ahead with changes and preparations for the Glory mission.

"There's physically been people that have been working this one item for two years," Baez said.

Glory is launching from the California coast so it can go into a sun-synchronous orbit to scan almost all of the Earth's surface as part of the "A-Train" of Earth-observation satellites already in orbit.

Together, Glory, the other spacecraft already in orbit and a future mission called the Orbiting Carbon Observatory-2, the replacement for the original OCO, are expected to give the most complete picture to date of Earth's climate and what makes it change.


Story Source:

The above story is based on materials provided by NASA. Note: Materials may be edited for content and length.


Cite This Page:

NASA. "Taurus XL ready to launch Glory spacecraft." ScienceDaily. ScienceDaily, 10 February 2011. <www.sciencedaily.com/releases/2011/02/110209200613.htm>.
NASA. (2011, February 10). Taurus XL ready to launch Glory spacecraft. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2011/02/110209200613.htm
NASA. "Taurus XL ready to launch Glory spacecraft." ScienceDaily. www.sciencedaily.com/releases/2011/02/110209200613.htm (accessed September 23, 2014).

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