Here We Go Again

There is a report today from NASASpaceflight.com that an Engine Cut-Off (ECO) sensor in the shuttle's external tank is acting up again and that sources within Lockheed Martin and NASA have indicated that it must be changed. This involves entering the tank, which would guarantee a miss on the May launch window. NASA PR people are denying that any decisions have been made.

This is a reprise of last year's launch fiasco where an erratic ECO was giving erroneous signals. NASA issued a variance of their flight rules and flew with only three of the four ECOs operating then, under the explanation that the anomoly was intermittent. Reports from the Cape indicate that it was indeed intermittent, as it would disappear when the SIM circuit was shut off and reappear when it was turned back on. Unfortunately, the purpose of the SIM circuit is to detect failures in the ECO — signals that should only appear when the SIM is on.

Anyone with any doubts as to what NASA's internal politics are like should read Dragonfly, about the American astronauts on Mir. Managers from low-level up to the director are willing to do whatever is necessary to keep the money flowing. Astronauts know that to speak up means that they'll never fly in space, so they keep their mouths shut and hope that when their turns come, nothing will fall off or explode. It is not an environment designed to elicit clear rational thought.

Make no mistake: spaceflight is a terribly dangerous activity. People will die on the way to and from the heavens. If advances are to be made it is probably the case that people should die; for if not, we are probably not pushing the envelope hard enough. What is not necessary is that people die because of bureaucratic stupidity.