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Workers with United Space Alliance remove Shuttle Discovery's dented main propulsion system liquid hydrogen recirculation line. From left are James Stickley, George Atkins, and Todd Biddle. The 12-inch-long dent was discovered during routine aft compartment inspections Tuesday, Dec. 7. The line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. The line is being replaced and managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99pp1402

This close-up shows the 12-inch-long dent on Shuttle Discovery's main propulsion system liquid hydrogen recirculation line that was discovered during routine aft compartment inspections Tuesday, Dec. 7. The line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. The line is being replaced and managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99pp1404

A spare four-inch diameter LH2 recirculation line (shown in photo) will be used to replace a damaged LH2 line in the orbiter Discovery. The line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. Workers noted a dent in the line during routine aft compartment inspections Tuesday, Dec. 7. The dent measures 12 inches long and about ½-inch deep. Managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99pp1397

KENNEDY SPACE CENTER, FLA. -- A small ruler shows the relative size of the bent LH2 recirculation line in Space Shuttle Discovery's engine compartment. Underneath the line is material draped to protect other components. The 12-inch-long dent was discovered during routine aft compartment inspections Tuesday, Dec. 7. The LH2 line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. The line is being replaced and managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99padig038

KENNEDY SPACE CENTER, FLA. -- Green dye penetrant helps pinpoint the dent discovered in this LH2 recirculation line in Space Shuttle Discovery's engine compartment. The 12-inch-long dent was discovered during routine aft compartment inspections Tuesday, Dec. 7. The LH2 line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. The line is being replaced and managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99padig039

Gary Hamilton (left) and James Stickley, both with United Space Alliance, check out a spare four-inch diameter LH2 recirculation line that will be used to replace a damaged LH2 line in the orbiter Discovery. The line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. Workers noted a dent in the line during routine aft compartment inspections Tuesday, Dec. 7. The dent measures 12 inches long and about ½-inch deep. Managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99pp1396

James Stickley (left) and Derry Dilby (right), who are with United Space Alliance, check over a spare four-inch diameter LH2 recirculation line that will be used to replace a damaged LH2 line in the orbiter Discovery. The line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. Workers noted a dent in the line during routine aft compartment inspections Tuesday, Dec. 7. The dent measures 12 inches long and about ½-inch deep. Managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99pp1398

KENNEDY SPACE CENTER, FLA. -- Fuel trucks head for Launch Pad 39B to refill the external tank on Space Shuttle Discovery. The top of the external tank can be seen above the rotating service structure that encloses the space shuttle. The launch attempt of Discovery on mission STS-116 was postponed Dec. 7 due a low cloud ceiling over Kennedy Space Center. The next launch attempt was scheduled for Saturday, Dec. 9, at 8:47 p.m. This will be Discovery's 33rd mission and the first night launch since 2002. The 20th shuttle mission to the International Space Station, STS-116 carries another truss segment, P5. It will serve as a spacer, mated to the P4 truss that was attached in September. After installing the P5, the crew will reconfigure and redistribute the power generated by two pairs of U.S. solar arrays. Landing is expected Dec. 19 at KSC. Photo credit: NASA/Ken Thornsley KSC-06pd2702

The early morning light reveals STS-95 Space Shuttle Discovery, on the Mobile Launch Platform, on its 6-hour, 4.2-mile trek to Launch Complex Pad 39B from the Vehicle Assembly Building. To the left is the Fixed Service Structure that provides access to the orbiter and the Rotating Service Structure. In the background is th eelevated water tank that helps reduce sound levels during launch. At the launch pad, the orbiter, external tank and solid rocket boosters will undergo final preparations for the launch, scheduled to lift off Oct. 29. The mission includes research payloads such as the Spartan solar-observing deployable spacecraft, the Hubble Space Telescope Orbital Systems Test Platform, the International Extreme Ultraviolet Hitchhiker, as well as the SPACEHAB single module with experiments on space flight and the aging process KSC-98pc1105

In the Payload Changeout Room, Launch Pad 39B, United Space Alliance and NASA workers look at the replacement main propulsion system liquid hydrogen recirculation line (left) to be installed in Shuttle Discovery's aft compartment. At right is the dented line that has been removed. The 12-inch-long dent was discovered during routine aft compartment inspections Tuesday, Dec. 7. The line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. The line is being replaced and managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope KSC-99pp1403

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Summary

In the Payload Changeout Room, Launch Pad 39B, United Space Alliance and NASA workers look at the replacement main propulsion system liquid hydrogen recirculation line (left) to be installed in Shuttle Discovery's aft compartment. At right is the dented line that has been removed. The 12-inch-long dent was discovered during routine aft compartment inspections Tuesday, Dec. 7. The line recirculates hydrogen from the Shuttle main engines back to the external tank during prelaunch engine conditioning. The line is being replaced and managers expect the replacement work to take about 3 days, followed by system retests and final aft compartment close-outs. Preliminary assessments reflect a launch date of Space Shuttle Discovery on mission STS-103 no earlier than Dec. 16. STS-103 is the third servicing mission for the Hubble Space Telescope

The Space Shuttle program was the United States government's manned launch vehicle program from 1981 to 2011, administered by NASA and officially beginning in 1972. The Space Shuttle system—composed of an orbiter launched with two reusable solid rocket boosters and a disposable external fuel tank— carried up to eight astronauts and up to 50,000 lb (23,000 kg) of payload into low Earth orbit (LEO). When its mission was complete, the orbiter would re-enter the Earth's atmosphere and lands as a glider. Although the concept had been explored since the late 1960s, the program formally commenced in 1972 and was the focus of NASA's manned operations after the final Apollo and Skylab flights in the mid-1970s. It started with the launch of the first shuttle Columbia on April 12, 1981, on STS-1. and finished with its last mission, STS-135 flown by Atlantis, in July 2011.

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kennedy space center payload room payload changeout room launch pad space alliance workers nasa workers replacement propulsion system propulsion system hydrogen recirculation line hydrogen recirculation line discovery shuttle discovery compartment dent inspections compartment inspections tuesday recirculates line recirculates hydrogen engines tank prelaunch prelaunch engine replacement work retests system retests close outs compartment close outs preliminary assessments preliminary assessments launch date space shuttle discovery sts mission sts hubble telescope hubble space telescope ksc space shuttle nasa
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Date

10/12/1999
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Space Shuttle Program

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Kennedy Space Center / Cape Canaveral Air Force Station Fire Station 2 ,  28.52650, -80.67093
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NASA
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https://images.nasa.gov/
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label_outline Explore Hubble Space Telescope Ksc, Preliminary Assessments, Recirculation

Weldon Spring, Mo., June 5, 2013 -- A home struck by a tornado on the evening of May 31, 2013 tore away the living room wall and roof. FEMA and the State of Missouri are doing Preliminary Damage Assessments (PDA) in the areas hit by a tornado. PDA is a joint assessment used to determine the magnitude and impact of an event's damage. The State uses the results of the PDA to determine if the situation is beyond the combined capabilities of the State and local resources and to verify the need for supplemental Federal assistance. Steve Zumwalt/FEMA

St Charles, Mo., June 5, 2013 -- A Preliminary Damage Assessment (PDA) team looks at a neighborhood damaged by a tornado. PDA is a joint assessment used to determine the magnitude and impact of an event's damage. The State uses the results of the PDA to determine if the situation is beyond the combined capabilities of the State and local resources and to verify the need for supplemental Federal assistance. Steve Zumwalt/FEMA

KENNEDY SPACE CENTER, Fla. -- The payload canister arrives at the Rotating Service Structure (RSS) on Launch Pad 39B. The canister with its cargo of the SPACEHAB module and Integrated Cargo Carrier will be lifted up into the Payload Changeout Room near the top of the RSS for transfer to the payload bay of Shuttle Atlantis for mission STS-106. The PCR provides an environmentally controlled facility for the transfer. The 11-day mission to the International Space Station will include service module support tasks on orbit, transfer supplies and outfit the Space Station for the first long-duration crew. Atlantis is scheduled to launch Sept. 8 at 8:31 a.m. EDT. KSC-00pp1116

KENNEDY SPACE CENTER, FLA. -- James Stickley and Kristin Rumpf, both with United Space Alliance - Main Propulsion System Engineering, discuss procedures about welding the minute cracks on Endeavour's flow liners. Endeavour is scheduled to fly on mission STS-113 in November. The mission payload is the P1 Integrated Truss Structure, the first portside truss to go to the International Space Station, and will be attached to the central truss segment, S0, on the Station. Also additional cooling radiators will be delivered but will remain stowed until flight 12A.1. KSC-02pd1204

Fire Island, N.Y., Nov. 26, 2012 -- A Preliminary Damage Assessment team comprised of state, local and federal officials, including experts from FEMA, New York State Office of Emergency Management (NYSOEM), Suffolk County Office of Emergency Management (SCOEM), the United States Army Corp of Engineers, The National Park Service and local Fire Island officials gather to assess a plan for debris removal. FEMA is working with state and local officials to assist residents who were affected by Hurricane Sandy. Chris Ragazzo/FEMA

Under the goals of the Vision for Space Exploration, Ares I is a chief component of the cost-effective space transportation infrastructure being developed by NASA's Constellation Program. This transportation system will safely and reliably carry human explorers back to the moon, and then onward to Mars and other destinations in the solar system. The Ares I effort includes multiple project element teams at NASA centers and contract organizations around the nation, and is managed by the Exploration Launch Projects Office at NASA's Marshall Space Flight Center (MFSC). ATK Launch Systems near Brigham City, Utah, is the prime contractor for the first stage booster. ATK's subcontractor, United Space Alliance of Houston, is designing, developing and testing the parachutes at its facilities at NASA's Kennedy Space Center in Florida. NASA's Johnson Space Center in Houston hosts the Constellation Program and Orion Crew Capsule Project Office and provides test instrumentation and support personnel. Together, these teams are developing vehicle hardware, evolving proven technologies, and testing components and systems. Their work builds on powerful, reliable space shuttle propulsion elements and nearly a half-century of NASA space flight experience and technological advances. Ares I is an inline, two-stage rocket configuration topped by the Crew Exploration Vehicle, its service module, and a launch abort system. This HD video image depicts friction stir welding used in manufacturing aluminum panels that will fabricate the Ares I upper stage barrel. The aluminum panels are subjected to confidence panel tests during which the bent aluminum is stressed to breaking point and thoroughly examined. The panels are manufactured by AMRO Manufacturing located in El Monte, California. (Highest resolution available) n/a

The space shuttle Enterprise is parked atop its specially-designed 76-wheel transporter at Space Launch Complex Six. In the background is the payload changeout room

Dent in Port Side of Hamburg American Steamship Cleveland

KENNEDY SPACE CENTER, Fla. -- Workers in the payload changeout room on Launch Pad 39A keep watch as they move the Multi-Purpose Logistics Module Leonardo out of the payload canister. The MPLM is the primary payload on mission STS-105 to the International Space Station. The mission includes a crew changeover on the Space Station. Expedition Three will be traveling on Discovery to replace Expedition Two, who will return to Earth on board Discovery. Launch of STS-105 is scheduled for Aug. 9 KSC-01pp1392

MOD-01 TOWER MODEL - PRELIMINARY DESIGN - SHADOW AT VARIOUS ANGLES

CAPE CANAVERAL, Fla. - At Launch Pad 39A at NASA's Kennedy Space Center in Florida, the payload canister, at left, is lifted from its transporter toward the payload changeout room in the rotating service structure. The canister carries a cargo of four carriers holding various equipment for the STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope. Atlantis is seen at right, atop the mobile launcher platform. The two tail service masts flank the engines in front of the wings. At the pad, the cargo will be moved into the Payload Changeout Room. The changeout room is the enclosed, environmentally controlled portion of the rotating service structure that supports cargo delivery to the pad and subsequent vertical installation into the shuttle’s payload bay. Launch of Atlantis is targeted for Oct. 10. Photo credit: NASA/Troy Cryder KSC-08pd2786

Fire Island, N.Y., Nov. 26, 2012 -- A Preliminary Damage Assessment team comprised of state, local and federal officials, including experts from FEMA, New York State Office of Emergency Management (NYSOEM), Suffolk County Office of Emergency Management (SCOEM), the United States Army Corp of Engineers, The National Park Service and local Fire Island officials gather to assess a plan for debris removal. Chris Ragazzo/FEMA

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kennedy space center payload room payload changeout room launch pad space alliance workers nasa workers replacement propulsion system propulsion system hydrogen recirculation line hydrogen recirculation line discovery shuttle discovery compartment dent inspections compartment inspections tuesday recirculates line recirculates hydrogen engines tank prelaunch prelaunch engine replacement work retests system retests close outs compartment close outs preliminary assessments preliminary assessments launch date space shuttle discovery sts mission sts hubble telescope hubble space telescope ksc space shuttle nasa