Atlantis' External Tank to Feature Commemorative Logo

When space shuttle Atlantis launches on the last shuttle mission in July, the external tank, designated ET-138, will be adorned with a colorful design painted on its side.

It is only the second time in 135 missions that an external tank will feature artwork, following ET-122, which flew with shuttle Endeavour in May.

ET-138’s ‘nose art’ is the winning design from the NASA Space Shuttle Program Commemorative Patch contest. The commemorative emblem is painted on a three-foot high by five-foot wide intertank access door near the top of the tank. It is a logo of the space shuttle surrounded by panels depicting the U.S. flag, 14 stars to commemorate the astronauts lost aboard shuttles Challenger and Columbia, and five panels symbolizing the entire shuttle fleet, including Discovery, Endeavour and Atlantis. It is surrounded by a blue circle and contains the inscription, “Space Shuttle Program, 1981-2011,” the years the shuttles flew.

The logo was designed by Blake Dumesnil, an engineer at Johnson Space Center in Houston, and was painted on the door by Lockheed Martin graphic artist Jon Irving, who works at NASA’s Michoud Assembly Facility in New Orleans, where the tanks are built.

Irving hand painted the design on the door at Michoud and it was shipped to Kennedy Space Center, Fla., where it will be installed on the tank before the launch of shuttle Atlantis on the STS-135 mission, scheduled for July 8.

Last Shuttle External Tank Rolling Out

Last Shuttle External Tank Rollout at Michoud Assembly Facility

External tank ET-138 (top) will help launch Space shuttle Endeavour (bottom) into space on its last mission later this year. (Image credit: NASA) Commemorating 37 years of successful tank deliveries, NASA and Lockheed Martin Space Systems Company will hold a ceremony on Thursday, July 8, at the agency's Michoud Assembly Facility in New Orleans to rollout the final external tank for the last space shuttle flight.

The last external tank scheduled to fly on a shuttle mission was completed on June 25 by Lockheed Martin workers at Michoud. The tank, designated ET-138, will travel on a wheeled transporter one mile to the Michoud barge dock. It will be accompanied by the Storyville Stompers, a traditional area brass band, and hundreds of handkerchief-waving employees in typical New Orleans fashion and spirit during the ceremony. ET-138 will then travel on a 900-mile sea journey to NASA's Kennedy Space Center in Florida, where it will support shuttle Endeavour's STS-134 launch.

The external tank, the "gas tank" for the orbiter, holds the propellants used by the space shuttle main engines. It also is the "backbone" of the shuttle during launch, providing structural support for attachment with the solid rocket boosters and orbiter. It is the only component of the space shuttle that is not reused. Approximately 8.5 minutes into the flight, with its propellant used, the tank is jettisoned into the ocean.

Taller than a 15-story building and more than 27 feet in diameter, the external tank absorbs the 7.8 million pounds of thrust of the three space shuttle main engines and solid rocket boosters during a space shuttle launch. It feeds 145,000 gallons of liquid oxygen and 390,000 gallons of liquid hydrogen to the main engines.

The three main components of the external tank include the liquid oxygen tank, liquid hydrogen tank and the collar-like intertank, which connects the two propellant tanks. The intertank houses instrumentation and processing equipment and provides the attachment structure for the solid rocket boosters.

When ET-138 arrives at Kennedy, processing will begin to mate it with shuttle Endeavour and solid rocket boosters for the STS-134 mission, scheduled to launch no earlier than mid-November. The mission will deliver the Express Logistics Carrier 3 and the Alpha Magnetic Spectrometer to the International Space Station. It will be the 36th shuttle mission to the space station and the 134th and final scheduled shuttle flight.

Michoud Space Systems workers, of Lockheed Martin Corporation, Littleton, Colo., have delivered 135 flight tanks to NASA during the 25 years of flying the space shuttle.

Work will be completed on one additional external tank, ET-122, which was at Michoud during Hurricane Katrina in August 2005 and damaged by falling debris. It is being restored to flight configuration and is scheduled for delivery to Kennedy in late September to serve as the “Launch on Need” tank, if needed, for STS-134.
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