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SN5 about to get wet, and maybe glow



 
 
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  #1  
Old July 13th 20, 01:03 AM posted to sci.space.policy
snidely
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Posts: 1,181
Default SN5 about to get wet, and maybe glow

From teslarati.com:
quote
Delayed from July 8th and 10th, Starship SN5’s first Raptor static fire
is now scheduled no earlier than ~10 am CDT (~15:00 UTC) on Monday,
July 13th.

If things go well during those nominally back-to-back tests, public
road closure filings show that SpaceX wanted to attempt the first
full-scale Starship hop just three days later, although the recent
two-day delay adds a bit of uncertainty.
/quote
URL:https://www.teslarati.com/spacex-starship-first-flight-july-2020/

Let's hope all the test procedures are in good shape and the testers as
well.

/dps

--
Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
went apopleptic when he learned a lousy rodent had peed away all his
precious heavy water.
_The Disappearing Spoon_, Sam Kean
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  #2  
Old July 13th 20, 05:14 AM posted to sci.space.policy
David Spain
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Posts: 2,782
Default SN5 about to get wet, and maybe glow

On 2020-07-12 8:22 PM, JF Mezei wrote:
Was there any confirmation of the cause of the SN4 instant explosion?
(I assume internally they know).



Last I read it was due to problems with the methane line quick
disconnects in the test stand. They properly disconnected but failed
spectacularly during reconnect. Allowing methane to leak massively until
it diffused enough to catch fire and explode in a fuel/air explosion.
I'm assuming the source of the leak was the fuel tank of SN4 itself
since upstream supply valves should have been closed to prevent leaks
from the methane supply lines. But I do not know this to be fact. Since
the fire and explosion blew SN4 off the test stand and not the supply
lines or tanks, this is probably a safe assumption.The tweet from Elon
mentioned a problem with the disconnects but not the exact issue. I'm
not sure where I got the re-connect issue description from, might have
been from a web forum I read. But it would make some sense. I had
experience with hydraulic quick disconnects in my youth. Usually a
disconnect was not nearly as hard as a connect in my experience.

Dave
  #3  
Old July 31st 20, 09:02 PM posted to sci.space.policy
snidely
external usenet poster
 
Posts: 1,181
Default SN5 about to get wet, and maybe glow

Snidely was thinking very hard :
From teslarati.com:
quote
Delayed from July 8th and 10th, Starship SN5’s first Raptor static fire is
now scheduled no earlier than ~10 am CDT (~15:00 UTC) on Monday, July 13th.

If things go well during those nominally back-to-back tests, public road
closure filings show that SpaceX wanted to attempt the first full-scale
Starship hop just three days later, although the recent two-day delay adds a
bit of uncertainty.
/quote
URL:https://www.teslarati.com/spacex-starship-first-flight-july-2020/

Let's hope all the test procedures are in good shape and the testers as well.


Finally got wet and glowing on Thursday, with a hop flight perhaps
early next week.

URL:https://www.teslarati.com/spacex-starship-static-fire-success-hop-test/

/dps

--
But happiness cannot be pursued; it must ensue. One must have a reason
to 'be happy.'"
Viktor Frankl
  #4  
Old August 1st 20, 01:49 AM posted to sci.space.policy
Alain Fournier[_3_]
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Posts: 465
Default SN5 about to get wet, and maybe glow

On Jul/31/2020 at 16:02, Snidely wrote :
Snidely was thinking very hard :
From teslarati.com:
quote
Delayed from July 8th and 10th, Starship SN5’s first Raptor static
fire is now scheduled no earlier than ~10 am CDT (~15:00 UTC) on
Monday, July 13th.

If things go well during those nominally back-to-back tests, public
road closure filings show that SpaceX wanted to attempt the first
full-scale Starship hop just three days later, although the recent
two-day delay adds a bit of uncertainty.
/quote
URL:https://www.teslarati.com/spacex-starship-first-flight-july-2020/

Let's hope all the test procedures are in good shape and the testers
as well.


Finally got wet and glowing on Thursday, with a hop flight perhaps early
next week.

URL:https://www.teslarati.com/spacex-starship-static-fire-success-hop-test/


I like the way they describe the forthcoming hop test:
"the first full-scale of its kind to lift off (intentionally)".


Alain Fournier
 




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