Summary

Description	Ok Dave, we are working an issue now on the countdown so, as long as you're here with us you have background on this kind of thing so can you tell us exactly what it is that they are talking about. George, I don't want to be the bearer of poor news but there is a problem with the vehicle that we're examining, right now, it's called a Low Level Fuel Cutoff LH2 low level cutoffs sensor, there's four of them on the vehicle. And if we really don't want the engine to be running at high speed and then suddenly run out of fuel, that can lead to a devastating breakdown of the engine even uncontained failure of the engine, if that should happen, therefore we have four sensors on the vehicle, and it requires two of those to detect a low level fuel in order to cutoff the engines early, before they would run out, and this is only comes into play in special conditions on the ascent, not on nominal ascent, so it's essentially a backup for a backup situation, but the flight director's here and the l
Date	2005-07-13
Source	images.nasa.gov

Licensing

Public Domain (US Government Work)