Author Topic: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09  (Read 135940 times)

Offline William Graham

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #500 on: 01/18/2009 01:10 AM »
Who was it who said they'd only had one issue in the last four Delta IV counts?

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #501 on: 01/18/2009 01:10 AM »
Recycling again. Ordinance safing.
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #502 on: 01/18/2009 01:10 AM »
Who was it who said they'd only had one issue in the last four Delta IV counts?

Haha, I regret saying that now...!  :D I must have jinxed them or something.
« Last Edit: 01/18/2009 01:12 AM by Nick L. »
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline just-nick

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #503 on: 01/18/2009 01:11 AM »
Same issue (or symptom -- script abort) as the first one?

Offline eeergo

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #504 on: 01/18/2009 01:14 AM »
Prop ready to go again.

And they say the R7 was slow getting off the pad for rapid response (I know, apples and oranges ;) )
-DaviD-

Offline William Graham

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #505 on: 01/18/2009 01:15 AM »
Recycle complete

Offline Tim S

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #506 on: 01/18/2009 01:15 AM »
Be thankful this is a four hour launch window. All these problems and failure to resolve what seems to be the previous problem would cause havoc if working to short windows.

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #507 on: 01/18/2009 01:15 AM »
Recycle complete. Ready for new T-0.
"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 #508 on: 01/18/2009 01:16 AM »
All holds removed

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #509 on: 01/18/2009 01:18 AM »
Still no info on the problem (or the last one, for that matter)?
« Last Edit: 01/18/2009 01:19 AM by Nick L. »
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline just-nick

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #510 on: 01/18/2009 01:19 AM »
Interesting contrast with SpaceX's try-and-try-again launches.  Much more methodical.

Reminds me a bit of the New Horizons launch -- that had a few holds (weather, I think) and finally shot through a hole in the clouds after a few tries, right?

Offline kevin-rf

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #511 on: 01/18/2009 01:20 AM »
Prop ready to go again.

And they say the R7 was slow getting off the pad for rapid response (I know, apples and oranges ;) )

Could be worse, at least it is not a navaho launch, didn't one of those attempts once take 24hrs.
If you're happy and you know it,
It's your med's!

Online Chris Bergin

Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #512 on: 01/18/2009 01:20 AM »
I wonder if there's a recycle limit for within the window?

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #513 on: 01/18/2009 01:21 AM »
Interesting contrast with SpaceX's try-and-try-again launches.  Much more methodical.

Reminds me a bit of the New Horizons launch -- that had a few holds (weather, I think) and finally shot through a hole in the clouds after a few tries, right?

Yep, shows that no matter who you are or how much experience you've got, equipment problems can still give you headaches...
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline John Macco

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #514 on: 01/18/2009 01:21 AM »
How many attempts can be made before scrubbing? I know the launch window is 4 hours.
John Macco
Space Unit
Shady Side, Md.

Offline just-nick

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #515 on: 01/18/2009 01:22 AM »
Could be worse, at least it is not a navaho launch, didn't one of those attempts once take 24hrs.

That's starting to sound like a cricket match!

Offline eeergo

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #516 on: 01/18/2009 01:23 AM »
How many attempts can be made before scrubbing? I know the launch window is 4 hours.

We're halfway into the window and there's been 2 aborts... so say other 3 more attempts if they're quick.
-DaviD-

Offline just-nick

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #517 on: 01/18/2009 01:24 AM »
How many attempts can be made before scrubbing? I know the launch window is 4 hours.

We're halfway into the window and there's been 2 aborts... so say other 3 more attempts if they're quick.

I could see LH2 reserve (for boiloff replenishment) being some sort of a constraint.

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #518 on: 01/18/2009 01:26 AM »
I wish they'd at least tell us what is wrong. This emotional roller-coaster can't be good for anyone... :)
« Last Edit: 01/18/2009 01:26 AM by Nick L. »
"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 #519 on: 01/18/2009 01:27 AM »
Prop ready to go again.

And they say the R7 was slow getting off the pad for rapid response (I know, apples and oranges ;) )

Could be worse, at least it is not a navaho launch, didn't one of those attempts once take 24hrs.

Not sure about 24 hours. I found a 15 hour one. Two others lasted 14 hours, one of which failed at T+26s, and the other exploded on the pad.
« Last Edit: 01/18/2009 01:28 AM by GW_Simulations »

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