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NASA Reaches Space Shuttle Solid Rocket Booster Milestone

Date:
December 6, 2004
Source:
NASA/Marshall Space Flight Center
Summary:
A major milestone was achieved today when technicians began stacking Space Shuttle Discovery's right Solid Rocket Booster in the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida — signifying the beginning of assembly for the Return-to-Flight STS-114 mission. Stacking the Shuttle's Boosters on the Mobile Launch Platform is a significant step to prepare the Shuttle Discovery for launch next spring.

Solid Rocket Booster at Kennedy Space Center.
Credit: Photo NASA/KSC

Major hardware for the Space Shuttle's Return to Flight mission, STS-114, is coming together at NASA's Kennedy Space Center, Fla. An important milestone was achieved Monday Nov. 22 when technicians began stacking Space Shuttle Discovery's right Solid Rocket Booster in the Vehicle Assembly Building. This signifies the beginning of assembly for the flight, which is planned for launch next spring.

Stacking the Shuttle's Boosters on the Mobile Launch Platform is a significant step to prepare Discovery for launch. The Mobile Launch Platform, a two-story tall, nine-million-pound steel structure, is the launch base for the Space Shuttle. Once the Shuttle vehicle is assembled, the platform is transported to the launch pad. The Shuttle vehicle is made up of the obiter, the Solid Rocket Boosters and the large External Tank.

"In our Return to Flight planning, we have systematically emphasized that our preparations for launch would be milestone driven," said Michael Kostelnik, deputy associate administrator International Space Station and Space Shuttle Programs. "Stacking of the Shuttle's Boosters is clearly one of those key milestones and indicative of the progress the program continues to make."

Assembly will continue this week until both the right and left Solid Rocket Boosters are stacked and ready to be connected with the External Tank and the Orbiter. The next step will be to join the External Tank to the Boosters.

"It's certainly great to see the assembly of the vehicle begin," said Michael Rudolphi, manager of Space Shuttle Propulsion Office at NASA's Marshall Space Flight Center in Huntsville, Ala. "This is an important milestone on the road back to U.S. human spaceflight."

The Solid Rocket Boosters are the largest solid rockets ever designed. Each is 149 feet high and 12 feet in diameter and produces 2.65 million pounds of thrust at liftoff. Each Booster consists of four segments of solid propellant, solid rocket motors, vertically stacked with a nose cone on top and the aft skirt, or base of the Booster, on which the entire vehicle weight rests prior to launch.

Stacking, or assembling the Reusable Solid Rocket Motors into the Booster, begins with transferring the aft skirt from the Rotation, Processing and Surge Facility to the Vehicle Assembly Building. Once the segment arrives, it is mounted on the Mobile Launch Platform. The segment is then bolted to the platform with four, 28-inch-long, 3.5-inch-diameter bolts.

Cranes are used to continue stacking the remaining fueled segments as well as the top of the booster, called the frustum, and the nose cone to form a complete Booster.

The Solid Rocket Boosters work with the main engines for the first two minutes of flight to provide the additional thrust needed for the Shuttle to escape the gravitational pull of the Earth. At an altitude of approximately 24 nautical miles, the Boosters separate from the External Tank, descend on parachutes, and land in the Atlantic Ocean. They are recovered by ships, returned to land and refurbished for reuse.

For more information about NASA's Return to Flight efforts, visit:

http://www.nasa.gov/returntoflight


Story Source:

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


Cite This Page:

NASA/Marshall Space Flight Center. "NASA Reaches Space Shuttle Solid Rocket Booster Milestone." ScienceDaily. ScienceDaily, 6 December 2004. <www.sciencedaily.com/releases/2004/11/041130081930.htm>.
NASA/Marshall Space Flight Center. (2004, December 6). NASA Reaches Space Shuttle Solid Rocket Booster Milestone. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2004/11/041130081930.htm
NASA/Marshall Space Flight Center. "NASA Reaches Space Shuttle Solid Rocket Booster Milestone." ScienceDaily. www.sciencedaily.com/releases/2004/11/041130081930.htm (accessed October 21, 2014).

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