Shuttle ET questions

Two questions regarding the Discovery ET repairs;
1. Are the faulty ribs made all in one piece end-to-end?
2. If so, shouldn't NASA also reinforce the bottoms of them where they
meet the LH2 tank as well as the top where they meet the LOX tank?

Pat

Pat Flannery wrote:
Two questions regarding the Discovery ET repairs;
1. Are the faulty ribs made all in one piece end-to-end?
2. If so, shouldn't NASA also reinforce the bottoms of them where they
meet the LH2 tank as well as the top where they meet the LOX tank?

Pat

You wait until it was rolled back to the pad to ask these questions?!!!

I say we send the crawler fuel bill to Pat!

;-D

Dave

On 2/5/2011 9:47 AM, David Spain wrote:
Pat Flannery wrote:
Two questions regarding the Discovery ET repairs;
1. Are the faulty ribs made all in one piece end-to-end?
2. If so, shouldn't NASA also reinforce the bottoms of them where they
meet the LH2 tank as well as the top where they meet the LOX tank?

Pat

You wait until it was rolled back to the pad to ask these questions?!!!

I say we send the crawler fuel bill to Pat!

I was waiting for them to make some statement about that situation, but
they never did.


Pat

Fred J. McCall wrote:
(Joseph Nebus) wrote:

Say, what fuel *does* the crawler use? I'd imagine a Diesel
engine, ...


It's diesel-electric. Diesel engines are used to produce electricity
that is used to drive electric motors to propel it.


And (IIRC) at a top speed of roughly 2.5 MPH one gets the impression its fuel
economy is measured in (k?)GPM... Are folks allowed on the launch platform and
service tower when this thing is moving?

Is the driver allowed to make cell phone calls and do texting?

;-)

Dave

On 2/5/2011 11:32 AM, Joseph Nebus wrote:



Say, what fuel *does* the crawler use?
I'd imagine a Diesel
engine, but my imagination doesn't mean it's right, and NASA might well
have decided to use something particularly exotic for reasons of its
own, like it gets to invent exotic fuels if people don't watch it
carefully. (And less cynically, demanding out-of-the-ordinary levels
of care in its preparation may turn it from regular fuel oil into some
weird new flavor.)

It's diesel powered, and gets pretty poor mileage...as in burning 125.7
gallons of fuel per mile:
http://en.wikipedia.org/wiki/Crawler-transporter
Next we have to figure out how long it takes to get from zero to sixty
feet per hour.

Pat

On Sat, 05 Feb 2011 20:13:42 -0500, David Spain
wrote:


And (IIRC) at a top speed of roughly 2.5 MPH one gets the impression its fuel
economy is measured in (k?)GPM... Are folks allowed on the launch platform and
service tower when this thing is moving?

The Service Tower's out on the concrete at the pad. Or are you asking
if someone's on the tower when the Crawler comes creeping its way up
the incline?

Brian

In sci.space.history message , Sat, 5
Feb 2011 19:32:26, Joseph Nebus posted:

Say, what fuel *does* the crawler use? I'd imagine a Diesel
engine, but my imagination doesn't mean it's right, and NASA might well
have decided to use something particularly exotic for reasons of its
own, like it gets to invent exotic fuels if people don't watch it
carefully. (And less cynically, demanding out-of-the-ordinary levels
of care in its preparation may turn it from regular fuel oil into some
weird new flavor.)

http://en.wikipedia.org/wiki/Crawler-transporter knows.

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Web http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms and links;
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Brian Thorn wrote:
On Sat, 05 Feb 2011 20:13:42 -0500, David Spain
wrote:


And (IIRC) at a top speed of roughly 2.5 MPH one gets the impression its fuel
economy is measured in (k?)GPM... Are folks allowed on the launch platform and
service tower when this thing is moving?

The Service Tower's out on the concrete at the pad. Or are you asking
if someone's on the tower when the Crawler comes creeping its way up
the incline?


Yes the latter. I suppose it's a question of proximity, or maybe it's just not
an issue given its moving so slowly, but there is a lot of mass there.

Dave

In sci.space.history David Spain wrote:
Pat Flannery wrote:
Two questions regarding the Discovery ET repairs;
You wait until it was rolled back to the pad to ask these
questions?!!!

I say we send the crawler fuel bill to Pat!

And make him re-grease it a la Mike Rowe. But without the nice Tyvek
bunny suit

rick jones

--
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it is one of "Ring Around the Rosy" or perhaps "Duck Duck Goose."
- Rick Jones
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feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...