Author Topic: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09  (Read 214021 times)

Offline eeergo

Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #400 on: 01/18/2009 12:12 am »
Script aborted...
-DaviD-

Offline William Graham

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #401 on: 01/18/2009 12:13 am »
Did anyone catch who called the hold?

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #402 on: 01/18/2009 12:13 am »
Swing arm pins back in.
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline William Graham

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #403 on: 01/18/2009 12:14 am »
LOX and LH2 recycling, igniters reset.

Offline Ford Mustang

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #404 on: 01/18/2009 12:14 am »
Did anyone catch who called the hold?

I believe I heard something close to "TM1".

Offline eeergo

Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #405 on: 01/18/2009 12:14 am »
They're resetting, preparing for restarting the count at T-5 minutes.

Looks like they'll try again soon?
« Last Edit: 01/18/2009 12:15 am by eeergo »
-DaviD-

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #406 on: 01/18/2009 12:15 am »
Ordinance safing. ATC-3 not paying attention... :D
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline Swatch

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #407 on: 01/18/2009 12:15 am »
LOX and LH2 recycling, igniters reset.

Could anyone explain to me what this means exactly?

How do you reset igniters?  (I don't know what kind the engine uses)
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Offline William Graham

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #408 on: 01/18/2009 12:16 am »
I think they said the centre CBC "stayed safe", but I'm not sure.

Presumably that means it failed to arm, resulting in the hold.
« Last Edit: 01/18/2009 12:16 am by GW_Simulations »

Offline Life_Support_32

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #409 on: 01/18/2009 12:16 am »
I saw a huge ball of flame come out of the flare stack right after the hold was called, is there a chance this may have been related to what cause the hold, or an after-effect?

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #410 on: 01/18/2009 12:16 am »
The igniters weren't quite "reset" but they were armed and then disarmed after the hold.
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline Ford Mustang

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #411 on: 01/18/2009 12:16 am »
Vehicle back on external power.

Offline eeergo

Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #412 on: 01/18/2009 12:16 am »
Assessing another try tonight.
-DaviD-

Offline edkyle99

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #413 on: 01/18/2009 12:17 am »
Something about "solid motor safe and arm to safe". 

Solid motor?

 - Ed Kyle

Offline Avron

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #414 on: 01/18/2009 12:17 am »
Assessing another try tonight.

Did hear a go for recycle..

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #415 on: 01/18/2009 12:17 am »
Something about "solid motor safe and arm to safe". 

Solid motor?

 - Ed Kyle

Sep motors for the strap-ons I think.
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline Jim

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #416 on: 01/18/2009 12:18 am »
I saw a huge ball of flame come out of the flare stack right after the hold was called, is there a chance this may have been related to what cause the hold, or an after-effect?

Neither, it was from shutting down LH2 replenishment.  The LH2 in the umbilicals and cross country lines has to go somewhere

Offline ringshot

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #417 on: 01/18/2009 12:19 am »
I saw a huge ball of flame come out of the flare stack right after the hold was called, is there a chance this may have been related to what cause the hold, or an after-effect?

That happens when they reopen the boiloff/relief valves (which are secured for launch).  You get a burst of GH2.

G'Day...Ron
G'Day...Ron

Offline eeergo

Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #418 on: 01/18/2009 12:19 am »
Assessing another try tonight.

Did hear a go for recycle..

Yes, but I think they have to fully safe and reconfigure the vehicule, and assess the failure.
-DaviD-

Offline Ford Mustang

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #419 on: 01/18/2009 12:20 am »
A hold was triggered by a computer.  Trying to recycle back to T-5 minutes.  They will then assess the problem, once this is done, they will see if re-initiation is possible.
« Last Edit: 01/18/2009 12:21 am by Ford Mustang »

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