How do they remove the Space Shuttle Discovery from its carrier aircraft?
The space shuttle Discovery will be hoisted off its ferry plane today (April 18) in a complicated ballet of cranes.Skip to next paragraph
In Pictures Space photos of the day: Space Shuttle Discovery
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The orbiter is currently perched atop a modified Boeing 747 jet that carried it from Florida to Virginia yesterday. The two aircraft flew from NASA's Kennedy Space Center in Cape Canaveral to the Dulles International Airport early Tuesday (April 17) to deliver Discovery to the Smithsonian, where it will end its days as a museum exhibit.
Today, the retired shuttle orbiter will be separated from its carrier plane in preparation for being towed to the Smithsonian's Stephen F. Udvar-Hazy Center here on Thursday (April 19).
Discovery was attached to the jet, called the Shuttle Carrier Aircraft, by three strong struts on the plane's fuselage. Those must be disconnected in a process called "de-mate" before the orbiter can be lifted off. [Photos: Shuttle Discovery Flies to Smithsonian]
Two giant steel cranes will loft Discovery into the air so that the Shuttle Carrier Aircraft can back out beneath it. Then the orbiter's landing gear wheels will be extended and the cranes will set Discovery onto the ground.
The National Air and Space Museum is planning a big "Welcome Discovery" celebration for Thursday, when the orbiter will be towed from the Dulles airport to the Udvar-Hazy Center nearby. The public is invited to the event, which will feature music, astronauts and activities for all ages starting at 8 a.m. EDT.