Perhaps some of the small pieces did in fact strike the orbiter, but we don't have what I'll call solid evidence. |
so is that the absolute worst thing that could happen? Well, no, it's not. |
So we're going to try to keep it in as near flight ready condition as we can without putting it through an OMDP so we can use those parts. Quite frankly, people are already calling us and asking us can they display one of our orbiters in their museum after we're done with it. I'm not giving anybody anything until we're all agreed the station is complete and the shuttle's job is done. In the sense that we're talking about mothballing, I'm not sure that's the term I'd use. |
that people have thought about, worried about. |
That tank we have to do a number of things to, at the minimum removing and replacing the PAL ramps, re-working the bipod closeout area where we think the wire may have actually allowed cryogenic ingestion of air to condense in an area, ... We have a number of things that we've got to do before we're ready to do that work. |
The bottom line is there is large uncertainty because nobody has a very good handle on the aerodynamics at those altitudes and at those speeds, ... Given that large degree of uncertainty, life could be normal during entry or some bad things could happen. |
The bottom line is there is large uncertainty because nobody has a very good handle on the aerodynamics at those altitudes and at those speeds. Given that large degree of uncertainty, life could be normal during entry or some bad things could happen. |
The Columbia accident made us realize that we had been playing Russian roulette with the shuttle crews -- that we had been very, very fortunate in the past that the foam did not cause critical damage. |
The concern is that you have a piece that is large enough to get down in the engine, and actually stop up something that's vital. The pieces that we're looking at right now are clearly small enough that we're not worried about them. |
The decision going forward was to fly, leaving these ice-frost ramps as-is, knowing that we will expect to have some small foam loss that could pose a risk to us occur during the next flight or two while we continue to investigate. |
The gap fillers, that's a product of the fact that we can see more and do a better job of evaluating. That's probably something that's happened in flight before, but this is the first time we've known about it and could take remedial action. |
The lowest risk, the best choice and the unanimous decision of the engineers in the management team is that we should re-enter as is. |
The question is 'Will the vehicle hold together or not? If the answer is 'No,' well we're not going anywhere. |
The risk here of going underneath the vehicle is, we hope, relatively remote, ... But it is surely something you have to think about. That is part of the calculation. |
The shuttle has carried more humans to orbit than any other vehicle. It is a technological revolution of the first order. |