[net.columbia] Shuttle launch delays

wmartin@brl-tgr.ARPA (Will Martin ) (01/03/86)

I've been wondering just what determines the length of a delay or
postponement of a shuttle launch when some defect is discovered
while the assembled craft is already fueled and there is only a short
time remaining in the countdown. Sometimes things are slipped a few
hours, other times until the next day, and then there will be abrupt
jumps to much longer delays, like several weeks.

Could someone in the know post a short summary of what sorts of delays
what kinds of discovered problems will cause? Something like:

Shuttle computer software bug    .....   1 day for patching & reloading

SRB Engine Safety-related failure  ...   3 weeks for return to vehicle
					 assembly building & replacement
and so on...

Also, how long does removing the liquid fuel & oxidizers take? How long can
the fueled shuttle sit on the pad while still fueled-up?

Thanks!
Will Martin

UUCP/USENET: seismo!brl-bmd!wmartin   or   ARPA/MILNET: wmartin@almsa-1.ARPA