Return to Flight Moves to July Window

April 29, 2005

NASA confirmed today that the Space Shuttle's Return to Flight mission would move to the July launch window to allow for further safety analysis. Furthermore, NASA will probably add a heater to the external tank to address icing issues.

The decision was made yesterday, after a series of reviews showed that further work was needed to address debris issues and some items that were discovered during work on Discovery at the launch pad.

"We're going to return to flight, not rush to flight," said NASA Administrator Michael Griffin. "We're going to do it right."

The Columbia accident revealed a major problem with the insulating foam that covers the External Tank. Investigators found that foam falling off the tank had damaged Columbia's left wing, letting superheated gases inside. Redesigning the External Tank became a top priority in the Agency's Return to Flight work.

NASA engineers made dozens of changes to the tank design, including one to a key mechanism that joins the External Tank with the orbiter. Jutting from the upper third of the tank, the "bipod fitting" is susceptible to icing due to the ultra-cold fuel that tank contains. Until the Columbia accident, the part was protected from ice buildup using thick sheets of foam. The improved bipod design now excludes using foam and instead relies on electric heaters to keep the area clear. The new fitting design is currently being retrofitted to the 11 existing tanks -- including the one chosen for Discovery's flight -- and will be included on those produced in the future.

Another major safety improvement to the Space Shuttle fleet is the expanded use of enhanced imaging equipment to record the launch of Discovery as it roars into the sky and glides through space.

Explore further: It's not rocket science—we need a better way to get to space

Related Stories

All in Place for Space Shuttle Return To Flight

January 6, 2005

NASA marked a major milestone for the Space Shuttle's Return to Flight, as the redesigned External Tank rolled out today from the barge that carried it to the agency's Kennedy Space Center, Fla. The tank was taken to the ...

Discovery Milestones Set Stage for Return To Flight

August 18, 2004

The pace of preparations for Return to Flight is picking up, with several key milestones in recent weeks marking important progress in readying the Space Shuttle Discovery for its next mission. Discovery is progressing ...

NASA Puts Space Shuttle External Tank to the Test

April 15, 2005

NASA engineers and managers are evaluating the data from today's Space Shuttle Discovery External Tank (ET) tanking test at Kennedy Space Center (KSC), Fla. The tanking test was yet another milestone in NASA's efforts to ...

Recommended for you

Can Paris pledges avert severe climate change?

November 26, 2015

More than 190 countries are meeting in Paris next week to create a durable framework for addressing climate change and to implement a process to reduce greenhouse gases over time. A key part of this agreement would be the ...


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.