[net.space] questions

jrv@MITRE-BEDFORD.ARPA (James R. Van Zandt) (01/29/86)

Two questions for discussion...

1. How long should we wait before launching another shuttle,
   if we CANNOT find the cause for the explosion?

2. Should we build another shuttle, or the next generation spacecraft?

                                     - Jim Van Zandt

space@ucbvax.UUCP (01/31/86)

In article <8601291312.AA09715@mitre-bedford.ARPA> you write:
>Two questions for discussion...
>
>1. How long should we wait before launching another shuttle,
>   if we CANNOT find the cause for the explosion?

In his news conference, the acting director of NASA stated that if
the definite cause isn't found, then a "shotgun fix" will be applied,
as has been done in the past, meaning fixing everything that could
have caused the problem.  That'll be the determining time period.

>2. Should we build another shuttle, or the next generation spacecraft?

Use the existing ones, but start design on the next generation.

Mojo
... Morris Jones, MicroPro Product Development
{lll-crg,ptsfa,dual,well,pyramid}!micropro!kepler!mojo

jrv@MITRE-BEDFORD.ARPA (James R. Van Zandt) (02/02/86)

> Second [of the shuttle explosion] cause may be that the flame heated up the
> detonation device that was supposed to blow up the shuttle in case it
> was out of control headed toward populated area.  If true, doubly
> ironic that (1) detonation device actually was immediate cause of loss
> of orbiter (2) huge chunks landed despite detonation 

The pieces may have been large, but wouldn't have caused NEARLY as much
damage as a crash of the full external tank with its fuel.

                          - Jim Van Zandt

animal@ihlpa.UUCP (D. Starr) (02/05/86)

> Two questions for discussion...
> 
> 1. How long should we wait before launching another shuttle,
>    if we CANNOT find the cause for the explosion?

Doesn't look like this will be a problem; there seems to be a new defect
uncovered in the shuttle design with each morning's paper.  A more serious
problem is:
	1(a).  What do we do if it turns out that the shuttle design
		is fatally flawed--that we cannot, for any reasonable
		expenditure, get the chance of catastrophic failure 
		below ~1-2%?
> 
> 2. Should we build another shuttle, or the next generation spacecraft?

From a crass political standpoint, the best thing to do would be to rise
up in national righteousness and immediately build a replacement while there
is still lots of public enthusiasm for carrying on.  From the more practical
point of view, the three remaining shuttles are sufficient to carry out the
real purpose of the program--finding out (the hard way) how one goes about
building a good space shuttle.  I think we ought to take the latter course,
sell shuttle space (for satellites, etc.) for rock bottom with the understanding
that there will be delays and risks, and learn all we can with the goal
(and commitment) of deploying a real "commercial airliner" quality space
shuttle by 1993.

Dan Starr

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